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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
66 lines
1.5 KiB
LLVM
66 lines
1.5 KiB
LLVM
; RUN: opt -tbaa -licm -S < %s | FileCheck %s
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; LICM should be able to hoist the address load out of the loop
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; by using TBAA information.
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; CHECK: @foo
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; CHECK: entry:
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; CHECK-NEXT: %tmp3 = load double*, double** @P, !tbaa !0
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; CHECK-NEXT: br label %for.body
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@P = common global double* null
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define void @foo(i64 %n) nounwind {
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entry:
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br label %for.body
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for.body: ; preds = %entry, %for.body
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%i.07 = phi i64 [ %inc, %for.body ], [ 0, %entry ]
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%tmp3 = load double*, double** @P, !tbaa !1
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%scevgep = getelementptr double, double* %tmp3, i64 %i.07
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%tmp4 = load double, double* %scevgep, !tbaa !2
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%mul = fmul double %tmp4, 2.300000e+00
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store double %mul, double* %scevgep, !tbaa !2
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%inc = add i64 %i.07, 1
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%exitcond = icmp eq i64 %inc, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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ret void
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}
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!0 = !{!"root", null}
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!1 = !{!6, !6, i64 0}
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!2 = !{!7, !7, i64 0}
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; LICM shouldn't hoist anything here.
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; CHECK: @bar
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; CHECK: loop:
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; CHECK: load
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; CHECK: store
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; CHECK: load
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; CHECK: store
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; CHECK: br label %loop
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define void @bar(i8** %p) nounwind {
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entry:
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%q = bitcast i8** %p to i8*
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br label %loop
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loop:
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%tmp51 = load i8*, i8** %p, !tbaa !4
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store i8* %tmp51, i8** %p
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%tmp40 = load i8, i8* %q, !tbaa !5
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store i8 %tmp40, i8* %q
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br label %loop
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}
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!3 = !{!"pointer", !8}
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!4 = !{!8, !8, i64 0}
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!5 = !{!9, !9, i64 0}
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!6 = !{!"pointer", !0}
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!7 = !{!"double", !0}
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!8 = !{!"char", !9}
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!9 = !{!"root", null}
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