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https://github.com/c64scene-ar/llvm-6502.git
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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
51 lines
1.4 KiB
LLVM
51 lines
1.4 KiB
LLVM
; RUN: opt -basicaa -tbaa -gvn -instcombine -S < %s | FileCheck %s --check-prefix=TBAA
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; RUN: opt -tbaa -basicaa -gvn -instcombine -S < %s | FileCheck %s --check-prefix=BASICAA
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; According to the TBAA metadata the load and store don't alias. However,
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; according to the actual code, they do. The order of the alias analysis
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; passes should determine which of these takes precedence.
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target datalayout = "e-p:64:64:64"
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; Test for simple MustAlias aliasing.
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; TBAA: @trouble
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; TBAA: ret i32 0
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; BASICAA: @trouble
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; BASICAA: ret i32 1075000115
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define i32 @trouble(i32* %x) nounwind {
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entry:
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store i32 0, i32* %x, !tbaa !0
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%0 = bitcast i32* %x to float*
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store float 0x4002666660000000, float* %0, !tbaa !3
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%tmp3 = load i32, i32* %x, !tbaa !0
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ret i32 %tmp3
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}
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; Test for PartialAlias aliasing. GVN doesn't yet eliminate the load
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; in the BasicAA case.
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; TBAA: @offset
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; TBAA: ret i64 0
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; BASICAA: @offset
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; BASICAA: ret i64 %tmp3
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define i64 @offset(i64* %x) nounwind {
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entry:
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store i64 0, i64* %x, !tbaa !4
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%0 = bitcast i64* %x to i8*
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%1 = getelementptr i8, i8* %0, i64 1
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store i8 1, i8* %1, !tbaa !5
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%tmp3 = load i64, i64* %x, !tbaa !4
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ret i64 %tmp3
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}
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!0 = !{!2, !2, i64 0}
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!1 = !{!"simple"}
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!2 = !{!"int", !1}
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!3 = !{!6, !6, i64 0}
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!4 = !{!7, !7, i64 0}
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!5 = !{!8, !8, i64 0}
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!6 = !{!"float", !1}
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!7 = !{!"long", !1}
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!8 = !{!"small", !1}
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