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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
42 lines
977 B
LLVM
42 lines
977 B
LLVM
; RUN: opt -S -basicaa -objc-arc-aa -gvn < %s | FileCheck %s
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@x = common global i8* null, align 8
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declare i8* @objc_retain(i8*)
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declare i32 @objc_sync_enter(i8*)
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declare i32 @objc_sync_exit(i8*)
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; GVN should be able to eliminate this redundant load, with ARC-specific
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; alias analysis.
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; CHECK: define i8* @test0(i32 %n)
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %s = load i8*, i8** @x
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; CHECK-NOT: load
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; CHECK: ret i8* %s
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; CHECK-NEXT: }
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define i8* @test0(i32 %n) nounwind {
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entry:
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%s = load i8*, i8** @x
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%0 = tail call i8* @objc_retain(i8* %s) nounwind
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%t = load i8*, i8** @x
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ret i8* %t
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}
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; GVN should not be able to eliminate this redundant load, with ARC-specific
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; alias analysis.
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; CHECK-LABEL: define i8* @test1(
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; CHECK: load
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; CHECK: load
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; CHECK: ret i8* %t
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; CHECK: }
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define i8* @test1(i32 %n) nounwind {
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entry:
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%s = load i8*, i8** @x
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%0 = call i32 @objc_sync_enter(i8* %s)
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%t = load i8*, i8** @x
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%1 = call i32 @objc_sync_exit(i8* %s)
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ret i8* %t
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}
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