derek.holloway
7502bf64a4
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45 lines
1.3 KiB
LLVM
45 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes=indvars < %s | FileCheck %s
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; The %tobool condition should not be optimized away.
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define void @test() {
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; CHECK-LABEL: define void @test() {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: br label %[[LOOP:.*]]
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; CHECK: [[LOOP]]:
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; CHECK-NEXT: [[IV:%.*]] = phi i128 [ 3, %[[ENTRY]] ], [ [[IV_DEC:%.*]], %[[LOOP_LATCH:.*]] ]
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; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i128 [[IV]], 0
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; CHECK-NEXT: br i1 [[TOBOOL]], label %[[LOOP_LATCH]], label %[[IF:.*]]
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; CHECK: [[IF]]:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: br label %[[LOOP_LATCH]]
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; CHECK: [[LOOP_LATCH]]:
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; CHECK-NEXT: [[IV_DEC]] = add nsw i128 [[IV]], -1
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; CHECK-NEXT: [[CMP:%.*]] = icmp samesign ugt i128 [[IV]], 0
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; CHECK-NEXT: br i1 [[CMP]], label %[[LOOP]], label %[[EXIT:.*]]
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; CHECK: [[EXIT]]:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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%iv = phi i128 [ 3, %entry ], [ %iv.dec, %loop.latch ]
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%tobool = icmp ne i128 %iv, 0
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br i1 %tobool, label %loop.latch, label %if
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if:
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call void @foo()
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br label %loop.latch
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loop.latch:
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%iv.dec = add nsw i128 %iv, -1
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%cmp = icmp sgt i128 %iv, 0
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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declare void @foo()
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