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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
31 lines
668 B
LLVM
31 lines
668 B
LLVM
; RUN: opt < %s -ipsccp -S | FileCheck %s
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; This transformation is safe for atomic loads and stores; check that it works.
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@G = internal global i32 17
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@C = internal constant i32 222
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define i32 @test1() {
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%V = load atomic i32, i32* @G seq_cst, align 4
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%C = icmp eq i32 %V, 17
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br i1 %C, label %T, label %F
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T:
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store atomic i32 17, i32* @G seq_cst, align 4
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ret i32 %V
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F:
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store atomic i32 123, i32* @G seq_cst, align 4
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ret i32 0
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}
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; CHECK-LABEL: define i32 @test1(
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; CHECK-NOT: store
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; CHECK: ret i32 17
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define i32 @test2() {
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%V = load atomic i32, i32* @C seq_cst, align 4
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ret i32 %V
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}
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; CHECK-LABEL: define i32 @test2(
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; CHECK-NOT: load
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; CHECK: ret i32 222
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