34 lines
1.4 KiB
LLVM
34 lines
1.4 KiB
LLVM
; REQUIRES: asserts
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; RUN: opt -passes=gvn -debug-only=local -disable-output 2>&1 < %s | FileCheck %s
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define void @replaceDominatedUsesWith_debug(ptr nocapture writeonly %a, i32 %beam) {
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; CHECK: Replace dominated use of 'i64 %indvars.iv' with %0 = zext i32 %beam to i64 in %1 = shl nuw nsw i64 %indvars.iv, 1
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entry:
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%0 = zext i32 %beam to i64
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br label %for.body
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for.cond.cleanup: ; preds = %for.inc
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ret void
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for.body: ; preds = %entry, %for.inc
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.inc ]
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%cmp1 = icmp eq i64 %indvars.iv, %0
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br i1 %cmp1, label %if.then, label %if.else
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if.then: ; preds = %for.body
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%1 = shl nuw nsw i64 %indvars.iv, 1
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%arrayidx = getelementptr inbounds i32, ptr %a, i64 %1
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store i32 0, ptr %arrayidx, align 4
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br label %for.inc
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if.else: ; preds = %for.body
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%2 = shl nuw nsw i64 %indvars.iv, 1
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%arrayidx4 = getelementptr inbounds i32, ptr %a, i64 %2
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store i32 1, ptr %arrayidx4, align 4
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br label %for.inc
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for.inc: ; preds = %if.then, %if.else
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond.not = icmp eq i64 %indvars.iv.next, 10000
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br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
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}
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