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compiler: use the LLVM builtins everywhere

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This gives some more optimization opportunities to LLVM, because it
understands these intrinsics. For example, it might convert
llvm.sqrt.f64 to llvm.sqrt.f32 if possible.
This commit is contained in:
Ayke van Laethem
2022-08-27 18:41:17 +02:00
committed by Ron Evans
parent ef912a132d
commit b8a6a1f62b
8 changed files with 387 additions and 248 deletions
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compiler/testdata/intrinsics-cortex-m-qemu.ll
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+7 -5
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@@ -14,21 +14,23 @@ entry:
; Function Attrs: nounwind
define hidden double @main.mySqrt(double %x, i8* %context) unnamed_addr #1 {
entry:
%0 = call double @math.Sqrt(double %x, i8* undef) #2
%0 = call double @llvm.sqrt.f64(double %x)
ret double %0
}
declare double @math.Sqrt(double, i8*) #0
; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
declare double @llvm.sqrt.f64(double) #2
; Function Attrs: nounwind
define hidden double @main.myTrunc(double %x, i8* %context) unnamed_addr #1 {
entry:
%0 = call double @math.Trunc(double %x, i8* undef) #2
%0 = call double @llvm.trunc.f64(double %x)
ret double %0
}
declare double @math.Trunc(double, i8*) #0
; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
declare double @llvm.trunc.f64(double) #2
attributes #0 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+strict-align,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
attributes #1 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+strict-align,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
attributes #2 = { nounwind }
attributes #2 = { nofree nosync nounwind readnone speculatable willreturn }