21 lines
697 B
LLVM
21 lines
697 B
LLVM
; RUN: opt -S -passes=indvars < %s | FileCheck %s
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; The indvar simplification code should ensure that the first PHI in the block
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; is the canonical one!
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define i32 @test() {
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; <label>:0
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br label %Loop
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Loop: ; preds = %Loop, %0
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; CHECK: Loop:
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; CHECK-NEXT: Canonical
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%NonIndvar = phi i32 [ 200, %0 ], [ %NonIndvarNext, %Loop ] ; <i32> [#uses=1]
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%Canonical = phi i32 [ 0, %0 ], [ %CanonicalNext, %Loop ] ; <i32> [#uses=2]
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store i32 %Canonical, ptr null
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%NonIndvarNext = sdiv i32 %NonIndvar, 2 ; <i32> [#uses=1]
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%CanonicalNext = add i32 %Canonical, 1 ; <i32> [#uses=1]
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br label %Loop
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}
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