derek.holloway
7502bf64a4
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108 lines
3.7 KiB
LLVM
108 lines
3.7 KiB
LLVM
; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s
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define void @single_loop(ptr %buf, i32 %start) {
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; CHECK-LABEL: Classifying expressions for: @single_loop
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entry:
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%val = add i32 %start, 400
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br label %loop
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loop:
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%counter = phi i32 [ 0, %entry ], [ %counter.inc, %loop ]
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%idx = phi i32 [ %start, %entry ], [ %idx.inc, %loop ]
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; CHECK: %counter = phi i32 [ 0, %entry ], [ %counter.inc, %loop ]
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Computable }
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; CHECK: %idx = phi i32 [ %start, %entry ], [ %idx.inc, %loop ]
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Computable }
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; CHECK: %val2 = add i32 %start, 400
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Invariant }
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; CHECK: %idx.inc = add nsw i32 %idx, 1
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Computable }
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; CHECK: %val3 = load volatile i32, ptr %buf
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %loop: Variant }
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%val2 = add i32 %start, 400
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%idx.inc = add nsw i32 %idx, 1
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%idx.inc.sext = sext i32 %idx.inc to i64
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%condition = icmp eq i32 %counter, 1
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%counter.inc = add i32 %counter, 1
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%val3 = load volatile i32, ptr %buf
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br i1 %condition, 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 @nested_loop(ptr %p, i64 %m) {
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; CHECK-LABEL: Classifying expressions for: @nested_loop
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; CHECK: %j = phi i64 [ 0, %entry ], [ %j.next, %outer.latch ]
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %outer.loop: Computable, %bb: Invariant }
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; CHECK: %i = phi i64 [ 0, %outer.loop ], [ %i.next, %bb ]
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %bb: Computable, %outer.loop: Uniform }
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; CHECK: %j.add = add i64 %j, 100
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %bb: Invariant, %outer.loop: Computable }
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; CHECK: %i.next = add i64 %i, 1
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %bb: Computable, %outer.loop: Uniform }
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; CHECK: %j.next = add i64 %j, 91
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %outer.loop: Computable, %bb: Invariant }
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entry:
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%k = icmp sgt i64 %m, 0
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br i1 %k, label %outer.loop, label %return
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outer.loop:
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%j = phi i64 [ 0, %entry ], [ %j.next, %outer.latch ]
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br label %bb
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bb:
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%i = phi i64 [ 0, %outer.loop ], [ %i.next, %bb ]
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%j.add = add i64 %j, 100
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%i.next = add i64 %i, 1
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%exitcond = icmp eq i64 %i.next, 91
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br i1 %exitcond, label %outer.latch, label %bb
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outer.latch:
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%j.next = add i64 %j, 91
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%h = icmp eq i64 %j.next, %m
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br i1 %h, label %return, label %outer.loop
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return:
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ret void
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}
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define void @nested_loop2(i16 %.pre.pre) {
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; CHECK-LABEL: Classifying expressions for: @nested_loop2
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; CHECK: %i = phi i16 [ 0, %entry ], [ %i.next, %outer.latch ]
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %outer.loop: Computable, %inner.loop: Invariant }
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; CHECK: %j = phi i16 [ %j.next, %inner.loop ], [ -1, %outer.loop ]
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %inner.loop: Computable, %outer.loop: Uniform }
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; CHECK: %j.next = add nsw i16 %j, 1
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %inner.loop: Computable, %outer.loop: Uniform }
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; CHECK: %smin = call i16 @llvm.smin.i16(i16 %i, i16 %j)
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %outer.loop: Variant, %inner.loop: Computable }
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; CHECK: %i.next = add i16 %i, 1
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; CHECK-NEXT: --> {{.*}} LoopDispositions: { %outer.loop: Computable, %inner.loop: Invariant }
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entry:
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br label %outer.loop
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outer.loop:
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%i = phi i16 [ 0, %entry ], [ %i.next, %outer.latch ]
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br label %inner.loop
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inner.loop:
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%j = phi i16 [ %j.next, %inner.loop ], [ -1, %outer.loop ]
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%cmp = icmp eq i16 %.pre.pre, 0
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%j.next = add nsw i16 %j, 1
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br i1 %cmp, label %inner.loop, label %outer.latch
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outer.latch:
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%smin = call i16 @llvm.smin.i16(i16 %i, i16 %j)
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store i16 %smin, ptr null, align 1
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%i.next = add i16 %i, 1
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br label %outer.loop
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}
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