0aef747b84
The motivation is that the update script has at least two deviations (`<...>@GOT`/`<...>@PLT`/ and not hiding pointer arithmetics) from what pretty much all the checklines were generated with, and most of the tests are still not updated, so each time one of the non-up-to-date tests is updated to see the effect of the code change, there is a lot of noise. Instead of having to deal with that each time, let's just deal with everything at once. This has been done via: ``` cd llvm-project/llvm/test/CodeGen/X86 grep -rl "; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py" | xargs -L1 <...>/llvm-project/llvm/utils/update_llc_test_checks.py --llc-binary <...>/llvm-project/build/bin/llc ``` Not all tests were regenerated, however.
105 lines
3.2 KiB
LLVM
105 lines
3.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -enable-unsafe-fp-math | FileCheck %s
|
|
|
|
define double @exact(double %x) {
|
|
; Exact division by a constant converted to multiplication.
|
|
; CHECK-LABEL: exact:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: mulsd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
|
|
; CHECK-NEXT: retq
|
|
%div = fdiv double %x, 2.0
|
|
ret double %div
|
|
}
|
|
|
|
define double @inexact(double %x) {
|
|
; Inexact division by a constant converted to multiplication.
|
|
; CHECK-LABEL: inexact:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: mulsd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
|
|
; CHECK-NEXT: retq
|
|
%div = fdiv double %x, 0x41DFFFFFFFC00000
|
|
ret double %div
|
|
}
|
|
|
|
define double @funky(double %x) {
|
|
; No conversion to multiplication if too funky.
|
|
; CHECK-LABEL: funky:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: xorpd %xmm1, %xmm1
|
|
; CHECK-NEXT: divsd %xmm1, %xmm0
|
|
; CHECK-NEXT: retq
|
|
%div = fdiv double %x, 0.0
|
|
ret double %div
|
|
}
|
|
|
|
define double @denormal1(double %x) {
|
|
; Don't generate multiplication by a denormal.
|
|
; CHECK-LABEL: denormal1:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: divsd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
|
|
; CHECK-NEXT: retq
|
|
%div = fdiv double %x, 0x7FD0000000000001
|
|
ret double %div
|
|
}
|
|
|
|
define double @denormal2(double %x) {
|
|
; Don't generate multiplication by a denormal.
|
|
; CHECK-LABEL: denormal2:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: divsd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
|
|
; CHECK-NEXT: retq
|
|
%div = fdiv double %x, 0x7FEFFFFFFFFFFFFF
|
|
ret double %div
|
|
}
|
|
|
|
; Deleting the negates does not require unsafe-fp-math.
|
|
|
|
define float @double_negative(float %x, float %y) #0 {
|
|
; CHECK-LABEL: double_negative:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: divss %xmm1, %xmm0
|
|
; CHECK-NEXT: retq
|
|
%neg1 = fsub float -0.0, %x
|
|
%neg2 = fsub float -0.0, %y
|
|
%div = fdiv float %neg1, %neg2
|
|
ret float %div
|
|
}
|
|
|
|
define <4 x float> @double_negative_vector(<4 x float> %x, <4 x float> %y) #0 {
|
|
; CHECK-LABEL: double_negative_vector:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: divps %xmm1, %xmm0
|
|
; CHECK-NEXT: retq
|
|
%neg1 = fsub <4 x float> <float -0.0, float -0.0, float -0.0, float -0.0>, %x
|
|
%neg2 = fsub <4 x float> <float -0.0, float -0.0, float -0.0, float -0.0>, %y
|
|
%div = fdiv <4 x float> %neg1, %neg2
|
|
ret <4 x float> %div
|
|
}
|
|
|
|
; This test used to fail, depending on how llc was built (e.g. using
|
|
; clang/gcc), due to order of argument evaluation not being well defined. We
|
|
; ended up hitting llvm_unreachable in getNegatedExpression when building with
|
|
; gcc. Just make sure that we get a deterministic result.
|
|
define float @fdiv_fneg_combine(float %a0, float %a1, float %a2) #0 {
|
|
; CHECK-LABEL: fdiv_fneg_combine:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: movaps %xmm0, %xmm3
|
|
; CHECK-NEXT: subss %xmm1, %xmm3
|
|
; CHECK-NEXT: subss %xmm0, %xmm1
|
|
; CHECK-NEXT: mulss %xmm2, %xmm1
|
|
; CHECK-NEXT: subss %xmm2, %xmm3
|
|
; CHECK-NEXT: divss %xmm3, %xmm1
|
|
; CHECK-NEXT: movaps %xmm1, %xmm0
|
|
; CHECK-NEXT: retq
|
|
%sub1 = fsub fast float %a0, %a1
|
|
%mul2 = fmul fast float %sub1, %a2
|
|
%neg = fneg fast float %a0
|
|
%add3 = fadd fast float %a1, %neg
|
|
%sub4 = fadd fast float %add3, %a2
|
|
%div5 = fdiv fast float %mul2, %sub4
|
|
ret float %div5
|
|
}
|
|
|
|
attributes #0 = { "unsafe-fp-math"="false" }
|
|
|