derek.holloway
7502bf64a4
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439 lines
15 KiB
LLVM
439 lines
15 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -passes='print<access-info>' -disable-output < %s 2>&1 | FileCheck %s
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; Loop guard for %off guarantees the accesses in the loop do not overlap.
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define void @access_after_via_loop_guard(ptr %a, i64 %off) {
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; CHECK-LABEL: 'access_after_via_loop_guard'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Memory dependences are safe
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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%c = icmp eq i64 %off, 100
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br i1 %c, label %ph, label %exit
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ph:
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%gep.after = getelementptr inbounds nuw i32, ptr %a, i64 %off
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br label %loop
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loop:
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%iv = phi i64 [ 0, %ph ], [ %iv.next, %loop ]
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%l = load i32 , ptr %gep.after, align 4
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%add = add i32 %l, %l
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%gep = getelementptr inbounds i32, ptr %a, i64 %iv
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store i32 %add, ptr %gep, align 4
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%iv.next = add nsw nuw i64 %iv, 1
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%ec = icmp eq i64 %iv.next, 100
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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; Loop guard for %off guarantees the accesses in the loop do not overlap.
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; TODO: currently missed by LAA
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define void @access_after_via_loop_guard_sge(ptr %a, i64 %off) {
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; CHECK-LABEL: 'access_after_via_loop_guard_sge'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
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; CHECK-NEXT: Unknown data dependence.
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Unknown:
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; CHECK-NEXT: %l = load i32, ptr %gep.after, align 4 ->
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; CHECK-NEXT: store i32 %add, ptr %gep, align 4
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; CHECK-EMPTY:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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%c = icmp sge i64 %off, 100
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br i1 %c, label %ph, label %exit
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ph:
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%gep.after = getelementptr inbounds nuw i32, ptr %a, i64 %off
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br label %loop
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loop:
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%iv = phi i64 [ 0, %ph ], [ %iv.next, %loop ]
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%l = load i32 , ptr %gep.after, align 4
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%add = add i32 %l, %l
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%gep = getelementptr inbounds i32, ptr %a, i64 %iv
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store i32 %add, ptr %gep, align 4
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%iv.next = add nsw nuw i64 %iv, 1
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%ec = icmp eq i64 %iv.next, 100
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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define void @access_after_via_loop_guard_99(ptr %a, i64 %off) {
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; CHECK-LABEL: 'access_after_via_loop_guard_99'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
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; CHECK-NEXT: Unknown data dependence.
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Unknown:
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; CHECK-NEXT: %l = load i32, ptr %gep.after, align 4 ->
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; CHECK-NEXT: store i32 %add, ptr %gep, align 4
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; CHECK-EMPTY:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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%c = icmp eq i64 %off, 99
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br i1 %c, label %ph, label %exit
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ph:
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%gep.after = getelementptr inbounds nuw i32, ptr %a, i64 %off
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br label %loop
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loop:
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%iv = phi i64 [ 0, %ph ], [ %iv.next, %loop ]
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%l = load i32 , ptr %gep.after, align 4
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%add = add i32 %l, %l
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%gep = getelementptr inbounds i32, ptr %a, i64 %iv
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store i32 %add, ptr %gep, align 4
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%iv.next = add nsw nuw i64 %iv, 1
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%ec = icmp eq i64 %iv.next, 100
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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; Loop guard for %off guarantees the accesses in the loop do not overlap.
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; TODO: currently missed by LAA
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define void @access_after_via_loop_guard_sge_99(ptr %a, i64 %off) {
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; CHECK-LABEL: 'access_after_via_loop_guard_sge_99'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
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; CHECK-NEXT: Unknown data dependence.
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Unknown:
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; CHECK-NEXT: %l = load i32, ptr %gep.after, align 4 ->
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; CHECK-NEXT: store i32 %add, ptr %gep, align 4
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; CHECK-EMPTY:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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%c = icmp sge i64 %off, 99
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br i1 %c, label %ph, label %exit
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ph:
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%gep.after = getelementptr inbounds nuw i32, ptr %a, i64 %off
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br label %loop
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loop:
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%iv = phi i64 [ 0, %ph ], [ %iv.next, %loop ]
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%l = load i32 , ptr %gep.after, align 4
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%add = add i32 %l, %l
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%gep = getelementptr inbounds i32, ptr %a, i64 %iv
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store i32 %add, ptr %gep, align 4
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%iv.next = add nsw nuw i64 %iv, 1
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%ec = icmp eq i64 %iv.next, 100
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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define void @access_after_via_loop_guard_uge(ptr %a, i64 %off) {
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; CHECK-LABEL: 'access_after_via_loop_guard_uge'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
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; CHECK-NEXT: Unknown data dependence.
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Unknown:
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; CHECK-NEXT: %l = load i32, ptr %gep.after, align 4 ->
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; CHECK-NEXT: store i32 %add, ptr %gep, align 4
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; CHECK-EMPTY:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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%c = icmp uge i64 %off, 100
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br i1 %c, label %ph, label %exit
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ph:
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%gep.after = getelementptr inbounds nuw i32, ptr %a, i64 %off
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br label %loop
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loop:
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%iv = phi i64 [ 0, %ph ], [ %iv.next, %loop ]
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%l = load i32 , ptr %gep.after, align 4
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%add = add i32 %l, %l
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%gep = getelementptr inbounds i32, ptr %a, i64 %iv
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store i32 %add, ptr %gep, align 4
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%iv.next = add nsw nuw i64 %iv, 1
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%ec = icmp eq i64 %iv.next, 100
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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; Loop guard for %off guarantees the accesses in the loop do not overlap.
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define void @access_after_via_loop_guard_eq_loop_cond(ptr %a, i64 %off) {
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; CHECK-LABEL: 'access_after_via_loop_guard_eq_loop_cond'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Memory dependences are safe
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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%c = icmp eq i64 %off, 100
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br i1 %c, label %ph, label %exit
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ph:
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%gep.after = getelementptr inbounds nuw i32, ptr %a, i64 100
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br label %loop
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loop:
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%iv = phi i64 [ 0, %ph ], [ %iv.next, %loop ]
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%l = load i32 , ptr %gep.after, align 4
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%add = add i32 %l, %l
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%gep = getelementptr inbounds i32, ptr %a, i64 %iv
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store i32 %add, ptr %gep, align 4
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%iv.next = add nsw nuw i64 %iv, 1
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%ec = icmp eq i64 %iv.next, %off
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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define void @access_after_via_loop_guard_eq_loop_cond_100(ptr %a, i64 %off) {
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; CHECK-LABEL: 'access_after_via_loop_guard_eq_loop_cond_100'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
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; CHECK-NEXT: Unknown data dependence.
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Unknown:
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; CHECK-NEXT: %l = load i32, ptr %gep.after, align 4 ->
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; CHECK-NEXT: store i32 %add, ptr %gep, align 4
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; CHECK-EMPTY:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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%c = icmp eq i64 %off, 101
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br i1 %c, label %ph, label %exit
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ph:
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%gep.after = getelementptr inbounds nuw i32, ptr %a, i64 100
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br label %loop
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loop:
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%iv = phi i64 [ 0, %ph ], [ %iv.next, %loop ]
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%l = load i32 , ptr %gep.after, align 4
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%add = add i32 %l, %l
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%gep = getelementptr inbounds i32, ptr %a, i64 %iv
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store i32 %add, ptr %gep, align 4
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%iv.next = add nsw nuw i64 %iv, 1
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%ec = icmp eq i64 %iv.next, %off
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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; Loop guard for %off guarantees the accesses in the loop do not overlap.
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; TODO: currently missed by LAA
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define void @access_after_via_loop_guard_sge_loop_cond(ptr %a, i64 %off) {
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; CHECK-LABEL: 'access_after_via_loop_guard_sge_loop_cond'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
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; CHECK-NEXT: Unknown data dependence.
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Unknown:
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; CHECK-NEXT: %l = load i32, ptr %gep.after, align 4 ->
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; CHECK-NEXT: store i32 %add, ptr %gep, align 4
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; CHECK-EMPTY:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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%c = icmp sge i64 %off, 100
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br i1 %c, label %ph, label %exit
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ph:
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%gep.after = getelementptr inbounds nuw i32, ptr %a, i64 100
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br label %loop
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loop:
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%iv = phi i64 [ 0, %ph ], [ %iv.next, %loop ]
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%l = load i32 , ptr %gep.after, align 4
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%add = add i32 %l, %l
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%gep = getelementptr inbounds i32, ptr %a, i64 %iv
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store i32 %add, ptr %gep, align 4
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%iv.next = add nsw nuw i64 %iv, 1
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%ec = icmp eq i64 %iv.next, %off
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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define void @access_after_via_loop_guard_sge_loop_cond_101(ptr %a, i64 %off) {
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; CHECK-LABEL: 'access_after_via_loop_guard_sge_loop_cond_101'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
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; CHECK-NEXT: Unknown data dependence.
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Unknown:
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; CHECK-NEXT: %l = load i32, ptr %gep.after, align 4 ->
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; CHECK-NEXT: store i32 %add, ptr %gep, align 4
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; CHECK-EMPTY:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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%c = icmp sge i64 %off, 101
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br i1 %c, label %ph, label %exit
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ph:
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%gep.after = getelementptr inbounds nuw i32, ptr %a, i64 100
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br label %loop
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loop:
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%iv = phi i64 [ 0, %ph ], [ %iv.next, %loop ]
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%l = load i32 , ptr %gep.after, align 4
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%add = add i32 %l, %l
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%gep = getelementptr inbounds i32, ptr %a, i64 %iv
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store i32 %add, ptr %gep, align 4
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%iv.next = add nsw nuw i64 %iv, 1
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%ec = icmp eq i64 %iv.next, %off
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br i1 %ec, label %exit, label %loop
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exit:
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ret void
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}
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; TODO Should be able to determine no-dep, same as @nodep_via_logical_and_2.
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define void @nodep_via_logical_and_1(ptr %A, i32 %index, i32 %n) {
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; CHECK-LABEL: 'nodep_via_logical_and_1'
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; CHECK-NEXT: loop:
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; CHECK-NEXT: Report: unsafe dependent memory operations in loop. Use #pragma clang loop distribute(enable) to allow loop distribution to attempt to isolate the offending operations into a separate loop
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; CHECK-NEXT: Unknown data dependence.
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Unknown:
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; CHECK-NEXT: %0 = load double, ptr %gep.load, align 8 ->
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; CHECK-NEXT: store double %0, ptr %gep.store, align 8
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; CHECK-EMPTY:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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entry:
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%pre.0 = icmp sgt i32 %index, 0
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%pre.1 = icmp slt i32 %index, %n
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%and.pre = select i1 %pre.1, i1 %pre.0, i1 false
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br i1 %and.pre, label %ph, label %exit
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ph:
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%idx.1 = add i32 %index, 1
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%start = zext i32 %idx.1 to i64
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br label %loop
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loop:
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%iv = phi i64 [ %start, %ph ], [ %iv.next, %loop ]
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%gep.load = getelementptr double, ptr %A, i64 %iv
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%1 = load double, ptr %gep.load, align 8
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%index.ext = zext i32 %index to i64
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%gep.store = getelementptr double, ptr %A, i64 %index.ext
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store double %1, ptr %gep.store, align 8
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|
%iv.next = add i64 %iv, 1
|
|
%t = trunc i64 %iv to i32
|
|
%ec = icmp slt i32 %t, 1
|
|
br i1 %ec, label %loop, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
; Same as nodep_via_logical_and_1 but with different operand order of the logical and.
|
|
define void @nodep_via_logical_and_2(ptr %A, i32 %index, i32 %n) {
|
|
; CHECK-LABEL: 'nodep_via_logical_and_2'
|
|
; CHECK-NEXT: loop:
|
|
; CHECK-NEXT: Memory dependences are safe
|
|
; CHECK-NEXT: Dependences:
|
|
; CHECK-NEXT: Run-time memory checks:
|
|
; CHECK-NEXT: Grouped accesses:
|
|
; CHECK-EMPTY:
|
|
; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
|
|
; CHECK-NEXT: SCEV assumptions:
|
|
; CHECK-EMPTY:
|
|
; CHECK-NEXT: Expressions re-written:
|
|
;
|
|
entry:
|
|
%pre.0 = icmp sgt i32 %index, 0
|
|
%pre.1 = icmp slt i32 %index, %n
|
|
%and.pre = select i1 %pre.0, i1 %pre.1, i1 false
|
|
br i1 %and.pre, label %ph, label %exit
|
|
|
|
ph:
|
|
%idx.1 = add i32 %index, 1
|
|
%start = zext i32 %idx.1 to i64
|
|
br label %loop
|
|
|
|
loop:
|
|
%iv = phi i64 [ %start, %ph ], [ %iv.next, %loop ]
|
|
%gep.load = getelementptr double, ptr %A, i64 %iv
|
|
%1 = load double, ptr %gep.load, align 8
|
|
%index.ext = zext i32 %index to i64
|
|
%gep.store = getelementptr double, ptr %A, i64 %index.ext
|
|
store double %1, ptr %gep.store, align 8
|
|
%iv.next = add i64 %iv, 1
|
|
%t = trunc i64 %iv to i32
|
|
%ec = icmp slt i32 %t, 1
|
|
br i1 %ec, label %loop, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|