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56573cc1ae
Try to move spills as early as possible in their basic block. This can help eliminate interferences by shortening the live range being spilled. This fixes PR10221. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134776 91177308-0d34-0410-b5e6-96231b3b80d8
36 lines
1019 B
LLVM
36 lines
1019 B
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-macosx | FileCheck %s
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; PR10221
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;; The registers %x and %y must both spill across the finit call.
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;; Check that they are spilled early enough that not copies are needed for the
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;; fadd and fpext.
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; CHECK: pr10221
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; CHECK-NOT: movaps
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; CHECK: movss
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; CHECK-NEXT: movss
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; CHECK-NEXT: addss
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; CHECK-NEXT: cvtss2sd
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; CHECK-NEXT: finit
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define i32 @pr10221(float %x, float %y, i8** nocapture %_retval) nounwind uwtable ssp {
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entry:
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%add = fadd float %x, %y
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%conv = fpext float %add to double
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%call = tail call i32 @finit(double %conv) nounwind
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%tobool = icmp eq i32 %call, 0
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br i1 %tobool, label %return, label %if.end
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if.end: ; preds = %entry
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tail call void @foo(float %x, float %y) nounwind
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br label %return
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return: ; preds = %entry, %if.end
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%retval.0 = phi i32 [ 0, %if.end ], [ 5, %entry ]
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ret i32 %retval.0
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}
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declare i32 @finit(double)
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declare void @foo(float, float)
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