Files
clang-p2996/llvm/test/CodeGen/X86/fmul-combines.ll
Roman Lebedev 0aef747b84 [NFC][X86][Codegen] Megacommit: mass-regenerate all check lines that were already autogenerated
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.
2021-06-11 23:57:02 +03:00

283 lines
9.4 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s
define <4 x float> @fmul_zero_not_fast(<4 x float> %x) nounwind {
; CHECK-LABEL: fmul_zero_not_fast:
; CHECK: # %bb.0:
; CHECK-NEXT: xorps %xmm1, %xmm1
; CHECK-NEXT: mulps %xmm1, %xmm0
; CHECK-NEXT: retq
%r = fmul <4 x float> %x, zeroinitializer
ret <4 x float> %r
}
define <4 x float> @fmul_zero_nsz_nnan(<4 x float> %x) nounwind {
; CHECK-LABEL: fmul_zero_nsz_nnan:
; CHECK: # %bb.0:
; CHECK-NEXT: xorps %xmm0, %xmm0
; CHECK-NEXT: retq
%r = fmul nsz nnan <4 x float> %x, zeroinitializer
ret <4 x float> %r
}
define <4 x float> @fmul_zero_nsz_nnan_undef(<4 x float> %x) nounwind {
; CHECK-LABEL: fmul_zero_nsz_nnan_undef:
; CHECK: # %bb.0:
; CHECK-NEXT: xorps %xmm0, %xmm0
; CHECK-NEXT: retq
%r = fmul nsz nnan <4 x float> %x, <float 0.0, float 0.0, float 0.0, float undef>
ret <4 x float> %r
}
define float @fmul2_f32(float %x) {
; CHECK-LABEL: fmul2_f32:
; CHECK: # %bb.0:
; CHECK-NEXT: addss %xmm0, %xmm0
; CHECK-NEXT: retq
%y = fmul float %x, 2.0
ret float %y
}
; fmul 2.0, x -> fadd x, x for vectors.
define <4 x float> @fmul2_v4f32(<4 x float> %x) {
; CHECK-LABEL: fmul2_v4f32:
; CHECK: # %bb.0:
; CHECK-NEXT: addps %xmm0, %xmm0
; CHECK-NEXT: retq
%y = fmul <4 x float> %x, <float 2.0, float 2.0, float 2.0, float 2.0>
ret <4 x float> %y
}
define <4 x float> @fmul2_v4f32_undef(<4 x float> %x) {
; CHECK-LABEL: fmul2_v4f32_undef:
; CHECK: # %bb.0:
; CHECK-NEXT: addps %xmm0, %xmm0
; CHECK-NEXT: retq
%y = fmul <4 x float> %x, <float undef, float 2.0, float 2.0, float 2.0>
ret <4 x float> %y
}
define <4 x float> @constant_fold_fmul_v4f32(<4 x float> %x) {
; CHECK-LABEL: constant_fold_fmul_v4f32:
; CHECK: # %bb.0:
; CHECK-NEXT: movaps {{.*#+}} xmm0 = [8.0E+0,8.0E+0,8.0E+0,8.0E+0]
; CHECK-NEXT: retq
%y = fmul <4 x float> <float 4.0, float 4.0, float 4.0, float 4.0>, <float 2.0, float 2.0, float 2.0, float 2.0>
ret <4 x float> %y
}
define <4 x float> @constant_fold_fmul_v4f32_undef(<4 x float> %x) {
; CHECK-LABEL: constant_fold_fmul_v4f32_undef:
; CHECK: # %bb.0:
; CHECK-NEXT: movaps {{.*#+}} xmm0 = [8.0E+0,NaN,8.0E+0,NaN]
; CHECK-NEXT: retq
%y = fmul <4 x float> <float 4.0, float undef, float 4.0, float 4.0>, <float 2.0, float 2.0, float 2.0, float undef>
ret <4 x float> %y
}
define <4 x float> @fmul0_v4f32_nsz_nnan(<4 x float> %x) {
; CHECK-LABEL: fmul0_v4f32_nsz_nnan:
; CHECK: # %bb.0:
; CHECK-NEXT: xorps %xmm0, %xmm0
; CHECK-NEXT: retq
%y = fmul nnan nsz <4 x float> %x, <float 0.0, float 0.0, float 0.0, float 0.0>
ret <4 x float> %y
}
define <4 x float> @fmul0_v4f32_undef(<4 x float> %x) {
; CHECK-LABEL: fmul0_v4f32_undef:
; CHECK: # %bb.0:
; CHECK-NEXT: xorps %xmm0, %xmm0
; CHECK-NEXT: retq
%y = fmul nnan nsz <4 x float> %x, <float undef, float 0.0, float undef, float 0.0>
ret <4 x float> %y
}
define <4 x float> @fmul_c2_c4_v4f32(<4 x float> %x) {
; CHECK-LABEL: fmul_c2_c4_v4f32:
; CHECK: # %bb.0:
; CHECK-NEXT: mulps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; CHECK-NEXT: retq
%y = fmul fast <4 x float> %x, <float 2.0, float 2.0, float 2.0, float 2.0>
%z = fmul fast <4 x float> %y, <float 4.0, float 4.0, float 4.0, float 4.0>
ret <4 x float> %z
}
define <4 x float> @fmul_c3_c4_v4f32(<4 x float> %x) {
; CHECK-LABEL: fmul_c3_c4_v4f32:
; CHECK: # %bb.0:
; CHECK-NEXT: mulps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; CHECK-NEXT: retq
%y = fmul fast <4 x float> %x, <float 3.0, float 3.0, float 3.0, float 3.0>
%z = fmul fast <4 x float> %y, <float 4.0, float 4.0, float 4.0, float 4.0>
ret <4 x float> %z
}
; CHECK: float 5
; CHECK: float 12
; CHECK: float 21
; CHECK: float 32
; We should be able to pre-multiply the two constant vectors.
define <4 x float> @fmul_v4f32_two_consts_no_splat(<4 x float> %x) {
; CHECK-LABEL: fmul_v4f32_two_consts_no_splat:
; CHECK: # %bb.0:
; CHECK-NEXT: mulps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; CHECK-NEXT: retq
%y = fmul fast <4 x float> %x, <float 1.0, float 2.0, float 3.0, float 4.0>
%z = fmul fast <4 x float> %y, <float 5.0, float 6.0, float 7.0, float 8.0>
ret <4 x float> %z
}
; Same as above, but reverse operands to make sure non-canonical form is also handled.
define <4 x float> @fmul_v4f32_two_consts_no_splat_non_canonical(<4 x float> %x) {
; CHECK-LABEL: fmul_v4f32_two_consts_no_splat_non_canonical:
; CHECK: # %bb.0:
; CHECK-NEXT: mulps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; CHECK-NEXT: retq
%y = fmul fast <4 x float> <float 1.0, float 2.0, float 3.0, float 4.0>, %x
%z = fmul fast <4 x float> <float 5.0, float 6.0, float 7.0, float 8.0>, %y
ret <4 x float> %z
}
; Node-level FMF and no function-level attributes.
define <4 x float> @fmul_v4f32_two_consts_no_splat_reassoc(<4 x float> %x) {
; CHECK-LABEL: fmul_v4f32_two_consts_no_splat_reassoc:
; CHECK: # %bb.0:
; CHECK-NEXT: mulps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; CHECK-NEXT: retq
%y = fmul <4 x float> %x, <float 1.0, float 2.0, float 3.0, float 4.0>
%z = fmul reassoc <4 x float> %y, <float 5.0, float 6.0, float 7.0, float 8.0>
ret <4 x float> %z
}
; Multiplication by 2.0 is a special case because that gets converted to fadd x, x.
define <4 x float> @fmul_v4f32_two_consts_no_splat_reassoc_2(<4 x float> %x) {
; CHECK-LABEL: fmul_v4f32_two_consts_no_splat_reassoc_2:
; CHECK: # %bb.0:
; CHECK-NEXT: mulps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; CHECK-NEXT: retq
%y = fadd <4 x float> %x, %x
%z = fmul reassoc <4 x float> %y, <float 5.0, float 6.0, float 7.0, float 8.0>
ret <4 x float> %z
}
; CHECK: float 6
; CHECK: float 14
; CHECK: float 24
; CHECK: float 36
; More than one use of a constant multiply should not inhibit the optimization.
; Instead of a chain of 2 dependent mults, this test will have 2 independent mults.
define <4 x float> @fmul_v4f32_two_consts_no_splat_multiple_use(<4 x float> %x) {
; CHECK-LABEL: fmul_v4f32_two_consts_no_splat_multiple_use:
; CHECK: # %bb.0:
; CHECK-NEXT: mulps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; CHECK-NEXT: retq
%y = fmul fast <4 x float> %x, <float 1.0, float 2.0, float 3.0, float 4.0>
%z = fmul fast <4 x float> %y, <float 5.0, float 6.0, float 7.0, float 8.0>
%a = fadd fast <4 x float> %y, %z
ret <4 x float> %a
}
; PR22698 - http://llvm.org/bugs/show_bug.cgi?id=22698
; Make sure that we don't infinite loop swapping constants back and forth.
; CHECK: float 24
; CHECK: float 24
; CHECK: float 24
; CHECK: float 24
define <4 x float> @PR22698_splats(<4 x float> %a) {
; CHECK-LABEL: PR22698_splats:
; CHECK: # %bb.0:
; CHECK-NEXT: mulps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; CHECK-NEXT: retq
%mul1 = fmul fast <4 x float> <float 2.0, float 2.0, float 2.0, float 2.0>, <float 3.0, float 3.0, float 3.0, float 3.0>
%mul2 = fmul fast <4 x float> <float 4.0, float 4.0, float 4.0, float 4.0>, %mul1
%mul3 = fmul fast <4 x float> %a, %mul2
ret <4 x float> %mul3
}
; Same as above, but verify that non-splat vectors are handled correctly too.
; CHECK: float 45
; CHECK: float 120
; CHECK: float 231
; CHECK: float 384
define <4 x float> @PR22698_no_splats(<4 x float> %a) {
; CHECK-LABEL: PR22698_no_splats:
; CHECK: # %bb.0:
; CHECK-NEXT: mulps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; CHECK-NEXT: retq
%mul1 = fmul fast <4 x float> <float 1.0, float 2.0, float 3.0, float 4.0>, <float 5.0, float 6.0, float 7.0, float 8.0>
%mul2 = fmul fast <4 x float> <float 9.0, float 10.0, float 11.0, float 12.0>, %mul1
%mul3 = fmul fast <4 x float> %a, %mul2
ret <4 x float> %mul3
}
define float @fmul_c2_c4_f32(float %x) {
; CHECK-LABEL: fmul_c2_c4_f32:
; CHECK: # %bb.0:
; CHECK-NEXT: mulss {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; CHECK-NEXT: retq
%y = fmul fast float %x, 2.0
%z = fmul fast float %y, 4.0
ret float %z
}
define float @fmul_c3_c4_f32(float %x) {
; CHECK-LABEL: fmul_c3_c4_f32:
; CHECK: # %bb.0:
; CHECK-NEXT: mulss {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; CHECK-NEXT: retq
%y = fmul fast float %x, 3.0
%z = fmul fast float %y, 4.0
ret float %z
}
define float @fmul_fneg_fneg_f32(float %x, float %y) {
; CHECK-LABEL: fmul_fneg_fneg_f32:
; CHECK: # %bb.0:
; CHECK-NEXT: mulss %xmm1, %xmm0
; CHECK-NEXT: retq
%x.neg = fsub float -0.0, %x
%y.neg = fsub float -0.0, %y
%mul = fmul float %x.neg, %y.neg
ret float %mul
}
define <4 x float> @fmul_fneg_fneg_v4f32(<4 x float> %x, <4 x float> %y) {
; CHECK-LABEL: fmul_fneg_fneg_v4f32:
; CHECK: # %bb.0:
; CHECK-NEXT: mulps %xmm1, %xmm0
; CHECK-NEXT: retq
%x.neg = fsub <4 x float> <float -0.0, float -0.0, float -0.0, float -0.0>, %x
%y.neg = fsub <4 x float> <float -0.0, float -0.0, float -0.0, float -0.0>, %y
%mul = fmul <4 x float> %x.neg, %y.neg
ret <4 x float> %mul
}
; PR47517 - this could crash if we create 'fmul x, 0.0' nodes
; that do not constant fold in a particular order.
define float @getNegatedExpression_crash(float* %p) {
; CHECK-LABEL: getNegatedExpression_crash:
; CHECK: # %bb.0:
; CHECK-NEXT: movl $0, (%rdi)
; CHECK-NEXT: xorps %xmm0, %xmm0
; CHECK-NEXT: retq
store float 0.0, float* %p, align 1
%real = load float, float* %p, align 1
%r2 = fmul fast float %real, %real
%t1 = fmul fast float %real, 42.0
%t2 = fmul fast float %real, %t1
%mul_ac56 = fmul fast float %t2, %t1
%mul_ac72 = fmul fast float %r2, %mul_ac56
ret float %mul_ac72
}