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7a90a95ac2
Following https://reviews.llvm.org/D82607. Reviewed By: ychen Differential Revision: https://reviews.llvm.org/D82683
32 lines
882 B
LLVM
32 lines
882 B
LLVM
; RUN: opt < %s -basic-aa -aa-eval -print-all-alias-modref-info 2>&1 | FileCheck %s
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; PR4267
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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; CHECK: MayAlias: double* %p.0.i.0, double* %p3
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; %p3 is equal to %p.0.i.0 on the second iteration of the loop,
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; so MayAlias is needed. In practice, basicaa returns PartialAlias
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; for GEPs to ignore TBAA.
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define void @foo([3 x [3 x double]]* noalias %p) {
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entry:
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%p3 = getelementptr [3 x [3 x double]], [3 x [3 x double]]* %p, i64 0, i64 0, i64 3
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br label %loop
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loop:
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%i = phi i64 [ 0, %entry ], [ %i.next, %loop ]
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%p.0.i.0 = getelementptr [3 x [3 x double]], [3 x [3 x double]]* %p, i64 0, i64 %i, i64 0
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store volatile double 0.0, double* %p3
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store volatile double 0.1, double* %p.0.i.0
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%i.next = add i64 %i, 1
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%cmp = icmp slt i64 %i.next, 3
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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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