derek.holloway
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68 lines
2.6 KiB
LLVM
68 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=loop-predication < %s 2>&1 | FileCheck %s
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declare void @llvm.experimental.deoptimize.isVoid(...)
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define void @test_01(i1 %cond) {
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; CHECK-LABEL: @test_01(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[INST:%.*]] = call i1 @llvm.experimental.widenable.condition()
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; CHECK-NEXT: [[TMP0:%.*]] = freeze i1 true
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; CHECK-NEXT: [[TMP1:%.*]] = and i1 [[TMP0]], [[INST]]
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: unreached:
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; CHECK-NEXT: unreachable
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; CHECK: loop:
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; CHECK-NEXT: [[INST3:%.*]] = phi i32 [ 0, [[BB:%.*]] ], [ [[INST4:%.*]], [[BACKEDGE:%.*]] ]
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; CHECK-NEXT: [[INST4]] = add nsw i32 [[INST3]], 1
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[BACKEDGE]], label [[GUARD_BLOCK:%.*]]
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; CHECK: normal_ret:
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; CHECK-NEXT: ret void
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; CHECK: backedge:
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; CHECK-NEXT: [[ASSUME_COND:%.*]] = phi i1 [ [[INST9:%.*]], [[GUARD_BLOCK]] ], [ true, [[LOOP]] ]
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; CHECK-NEXT: call void @llvm.assume(i1 [[ASSUME_COND]])
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; CHECK-NEXT: [[INST7:%.*]] = icmp sgt i32 [[INST3]], 137
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; CHECK-NEXT: br i1 [[INST7]], label [[UNREACHED:%.*]], label [[LOOP]]
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; CHECK: guard_block:
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; CHECK-NEXT: [[INST9]] = icmp ult i32 [[INST4]], 10000
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; CHECK-NEXT: br i1 [[TMP1]], label [[BACKEDGE]], label [[DEOPT:%.*]]
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; CHECK: deopt:
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; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid(i32 13) [ "deopt"() ]
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; CHECK-NEXT: ret void
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; CHECK: done:
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; CHECK-NEXT: ret void
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;
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bb:
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%inst = call i1 @llvm.experimental.widenable.condition()
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br label %loop
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unreached: ; preds = %backedge
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unreachable
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loop: ; preds = %backedge, %bb
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%inst3 = phi i32 [ 0, %bb ], [ %inst4, %backedge ]
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%inst4 = add nsw i32 %inst3, 1
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br i1 %cond, label %backedge, label %guard_block
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normal_ret: ; preds = %loop
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ret void
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backedge: ; preds = %guard_block, %loop
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%inst7 = icmp sgt i32 %inst3, 137
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br i1 %inst7, label %unreached, label %loop
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guard_block: ; preds = %loop, %loop
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%inst9 = icmp ult i32 %inst4, 10000
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%inst10 = and i1 %inst9, %inst
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br i1 %inst10, label %backedge, label %deopt
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deopt: ; preds = %guard_block
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call void (...) @llvm.experimental.deoptimize.isVoid(i32 13) [ "deopt"() ]
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ret void
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done: ; preds = %loop
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ret void
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}
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declare i1 @llvm.experimental.widenable.condition()
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