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ab043ff680
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
llvm-svn: 230794
29 lines
943 B
LLVM
29 lines
943 B
LLVM
; RUN: opt < %s -loweratomic -S | FileCheck %s
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define i8 @cmpswap() {
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; CHECK-LABEL: @cmpswap(
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%i = alloca i8
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%pair = cmpxchg i8* %i, i8 0, i8 42 monotonic monotonic
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%j = extractvalue { i8, i1 } %pair, 0
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; CHECK: [[OLDVAL:%[a-z0-9]+]] = load i8, i8* [[ADDR:%[a-z0-9]+]]
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; CHECK-NEXT: [[SAME:%[a-z0-9]+]] = icmp eq i8 [[OLDVAL]], 0
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; CHECK-NEXT: [[TO_STORE:%[a-z0-9]+]] = select i1 [[SAME]], i8 42, i8 [[OLDVAL]]
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; CHECK-NEXT: store i8 [[TO_STORE]], i8* [[ADDR]]
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; CHECK-NEXT: [[TMP:%[a-z0-9]+]] = insertvalue { i8, i1 } undef, i8 [[OLDVAL]], 0
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; CHECK-NEXT: [[RES:%[a-z0-9]+]] = insertvalue { i8, i1 } [[TMP]], i1 [[SAME]], 1
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; CHECK-NEXT: [[VAL:%[a-z0-9]+]] = extractvalue { i8, i1 } [[RES]], 0
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ret i8 %j
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; CHECK: ret i8 [[VAL]]
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}
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define i8 @swap() {
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; CHECK-LABEL: @swap(
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%i = alloca i8
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%j = atomicrmw xchg i8* %i, i8 42 monotonic
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; CHECK: [[INST:%[a-z0-9]+]] = load
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; CHECK-NEXT: store
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ret i8 %j
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; CHECK: ret i8 [[INST]]
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}
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