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7c9c6ed761
Essentially the same as the GEP change in r230786.
A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)
import fileinput
import sys
import re
pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")
for line in sys.stdin:
sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))
Reviewers: rafael, dexonsmith, grosser
Differential Revision: http://reviews.llvm.org/D7649
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
21 lines
660 B
LLVM
21 lines
660 B
LLVM
; This testcase makes sure that size is taken to account when alias analysis
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; is performed. It is not legal to delete the second load instruction because
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; the value computed by the first load instruction is changed by the store.
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; RUN: opt < %s -basicaa -gvn -instcombine -S | FileCheck %s
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define i32 @test() {
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; CHECK: %Y.DONOTREMOVE = load i32, i32* %A
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; CHECK: %Z = sub i32 0, %Y.DONOTREMOVE
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%A = alloca i32
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store i32 0, i32* %A
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%X = load i32, i32* %A
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%B = bitcast i32* %A to i8*
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%C = getelementptr i8, i8* %B, i64 1
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store i8 1, i8* %C ; Aliases %A
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%Y.DONOTREMOVE = load i32, i32* %A
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%Z = sub i32 %X, %Y.DONOTREMOVE
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ret i32 %Z
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}
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