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https://github.com/c64scene-ar/llvm-6502.git
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34 lines
1.0 KiB
LLVM
34 lines
1.0 KiB
LLVM
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; RUN: opt -tbaa -licm -enable-tbaa -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: 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 !"pointer", metadata !0}
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!2 = metadata !{metadata !"double", metadata !0}
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