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af1954cd08
It got this in some cases (if one of them was an identified object), but not in all cases. This caused stores to undef to block load-forwarding in some cases, etc. Added test to Transforms/GVN to verify optimization occurs as expected. llvm-svn: 236511
16 lines
419 B
LLVM
16 lines
419 B
LLVM
; RUN: opt -basicaa -gvn -S < %s | FileCheck %s
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; ModuleID = 'test3.ll'
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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define i32 @main(i32 *%foo) {
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entry:
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; CHECK: load i32, i32* %foo, align 4
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%0 = load i32, i32* %foo, align 4
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store i32 5, i32* undef, align 4
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; CHECK-NOT: load i32, i32* %foo, align 4
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%1 = load i32, i32* %foo, align 4
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; CHECK: add i32 %0, %0
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%2 = add i32 %0, %1
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ret i32 %2
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}
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