mirror of
https://github.com/c64scene-ar/llvm-6502.git
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9e81c3bdb2
Remove the command line argument "struct-path-tbaa" since we should not depend on command line argument to decide which format the IR file is using. Instead, we check the first operand of the tbaa tag node, if it is a MDNode, we treat it as struct-path aware TBAA format, otherwise, we treat it as scalar TBAA format. When clang starts to use struct-path aware TBAA format no matter whether struct-path-tbaa is no, and we can auto-upgrade existing bc files, the support for scalar TBAA format can be dropped. Existing testing cases are updated to use the struct-path aware TBAA format. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191538 91177308-0d34-0410-b5e6-96231b3b80d8
66 lines
1.7 KiB
LLVM
66 lines
1.7 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** @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** @P, !tbaa !1
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%scevgep = getelementptr double* %tmp3, i64 %i.07
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%tmp4 = load 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 = metadata !{metadata !"root", null}
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!1 = metadata !{metadata !6, metadata !6, i64 0}
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!2 = metadata !{metadata !7, metadata !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** %p, !tbaa !4
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store i8* %tmp51, i8** %p
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%tmp40 = load 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 = metadata !{metadata !"pointer", metadata !8}
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!4 = metadata !{metadata !8, metadata !8, i64 0}
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!5 = metadata !{metadata !9, metadata !9, i64 0}
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!6 = metadata !{metadata !"pointer", metadata !0}
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!7 = metadata !{metadata !"double", metadata !0}
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!8 = metadata !{metadata !"char", metadata !9}
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!9 = metadata !{metadata !"root", null}
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