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Start to add the LLVM builtins to the mips16 exclusion lists for fp.

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I need to add the rest of these to the list or else to delay putting
out the actual stub until later in code generation when I know if
the external function ever got emitted

Resubmit this patch. The target triple needs to be added to the test so that 
clang does not tell the backend the wrong target when the host is BSD. There
is a clang bug in here somewhere that I need to track down. At Mips this
has been filed internally as a bug.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189186 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reed Kotler 2013-08-25 02:40:25 +00:00
parent 676537aaaa
commit 5e5c3069cd
2 changed files with 29 additions and 1 deletions
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2
lib/Target/Mips/Mips16HardFloat.cpp
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@ -325,7 +325,7 @@ static void assureFPCallStub(Function &F, Module *M,
// Functions that are inline intrinsics don't need helpers.
//
static const char *IntrinsicInline[] =
{"fabs"};
{"fabs", "llvm.powi.f64"};
static bool isIntrinsicInline(Function *F) {
return std::binary_search(

28
test/CodeGen/Mips/powif64_16.ll Normal file
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@ -0,0 +1,28 @@
; RUN: llc -mtriple=mipsel-linux-gnu -march=mipsel -mcpu=mips16 -mips16-hard-float -soft-float -relocation-model=static < %s | FileCheck %s
@x = global double 4.500000e+00, align 8
@i = global i32 4, align 4
@y = common global double 0.000000e+00, align 8
; Function Attrs: nounwind optsize
define i32 @main() #0 {
entry:
%0 = load double* @x, align 8, !tbaa !0
%1 = load i32* @i, align 4, !tbaa !3
%2 = tail call double @llvm.powi.f64(double %0, i32 %1)
; CHECK-NOT: .ent __call_stub_fp_llvm.powi.f64
; CHECK-NOT: {{.*}} jal llvm.powi.f64
store double %2, double* @y, align 8, !tbaa !0
ret i32 0
}
; Function Attrs: nounwind readonly
declare double @llvm.powi.f64(double, i32) #1
attributes #0 = { nounwind optsize "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="true" }
attributes #1 = { nounwind readonly }
!0 = metadata !{metadata !"double", metadata !1}
!1 = metadata !{metadata !"omnipotent char", metadata !2}
!2 = metadata !{metadata !"Simple C/C++ TBAA"}
!3 = metadata !{metadata !"int", metadata !1}