1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-22 18:54:02 +01:00
llvm-mirror/test/CodeGen/X86/combine-sub.ll
Roman Lebedev 18451cc4a4 [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

278 lines
7.9 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.1 | FileCheck %s --check-prefixes=CHECK,SSE
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefixes=CHECK,AVX
; fold (sub x, 0) -> x
define <4 x i32> @combine_vec_sub_zero(<4 x i32> %a) {
; CHECK-LABEL: combine_vec_sub_zero:
; CHECK: # %bb.0:
; CHECK-NEXT: retq
%1 = sub <4 x i32> %a, zeroinitializer
ret <4 x i32> %1
}
; fold (sub x, x) -> 0
define <4 x i32> @combine_vec_sub_self(<4 x i32> %a) {
; SSE-LABEL: combine_vec_sub_self:
; SSE: # %bb.0:
; SSE-NEXT: xorps %xmm0, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_sub_self:
; AVX: # %bb.0:
; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = sub <4 x i32> %a, %a
ret <4 x i32> %1
}
; fold (sub x, c) -> (add x, -c)
define <4 x i32> @combine_vec_sub_constant(<4 x i32> %x) {
; SSE-LABEL: combine_vec_sub_constant:
; SSE: # %bb.0:
; SSE-NEXT: psubd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_sub_constant:
; AVX: # %bb.0:
; AVX-NEXT: vpsubd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0, %xmm0
; AVX-NEXT: retq
%1 = sub <4 x i32> %x, <i32 0, i32 1, i32 2, i32 3>
ret <4 x i32> %1
}
; Canonicalize (sub -1, x) -> ~x, i.e. (xor x, -1)
define <4 x i32> @combine_vec_sub_negone(<4 x i32> %x) {
; SSE-LABEL: combine_vec_sub_negone:
; SSE: # %bb.0:
; SSE-NEXT: pcmpeqd %xmm1, %xmm1
; SSE-NEXT: pxor %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_sub_negone:
; AVX: # %bb.0:
; AVX-NEXT: vpcmpeqd %xmm1, %xmm1, %xmm1
; AVX-NEXT: vpxor %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = sub <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>, %x
ret <4 x i32> %1
}
; fold A-(A-B) -> B
define <4 x i32> @combine_vec_sub_sub(<4 x i32> %a, <4 x i32> %b) {
; SSE-LABEL: combine_vec_sub_sub:
; SSE: # %bb.0:
; SSE-NEXT: movaps %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_sub_sub:
; AVX: # %bb.0:
; AVX-NEXT: vmovaps %xmm1, %xmm0
; AVX-NEXT: retq
%1 = sub <4 x i32> %a, %b
%2 = sub <4 x i32> %a, %1
ret <4 x i32> %2
}
; fold (A+B)-A -> B
define <4 x i32> @combine_vec_sub_add0(<4 x i32> %a, <4 x i32> %b) {
; SSE-LABEL: combine_vec_sub_add0:
; SSE: # %bb.0:
; SSE-NEXT: movaps %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_sub_add0:
; AVX: # %bb.0:
; AVX-NEXT: vmovaps %xmm1, %xmm0
; AVX-NEXT: retq
%1 = add <4 x i32> %a, %b
%2 = sub <4 x i32> %1, %a
ret <4 x i32> %2
}
; fold (A+B)-B -> A
define <4 x i32> @combine_vec_sub_add1(<4 x i32> %a, <4 x i32> %b) {
; CHECK-LABEL: combine_vec_sub_add1:
; CHECK: # %bb.0:
; CHECK-NEXT: retq
%1 = add <4 x i32> %a, %b
%2 = sub <4 x i32> %1, %b
ret <4 x i32> %2
}
; fold C2-(A+C1) -> (C2-C1)-A
define <4 x i32> @combine_vec_sub_constant_add(<4 x i32> %a) {
; SSE-LABEL: combine_vec_sub_constant_add:
; SSE: # %bb.0:
; SSE-NEXT: movdqa {{.*#+}} xmm1 = [3,1,4294967295,4294967293]
; SSE-NEXT: psubd %xmm0, %xmm1
; SSE-NEXT: movdqa %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_sub_constant_add:
; AVX: # %bb.0:
; AVX-NEXT: vmovdqa {{.*#+}} xmm1 = [3,1,4294967295,4294967293]
; AVX-NEXT: vpsubd %xmm0, %xmm1, %xmm0
; AVX-NEXT: retq
%1 = add <4 x i32> %a, <i32 0, i32 1, i32 2, i32 3>
%2 = sub <4 x i32> <i32 3, i32 2, i32 1, i32 0>, %1
ret <4 x i32> %2
}
; fold ((A+(B+C))-B) -> A+C
define <4 x i32> @combine_vec_sub_add_add(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
; SSE-LABEL: combine_vec_sub_add_add:
; SSE: # %bb.0:
; SSE-NEXT: paddd %xmm2, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_sub_add_add:
; AVX: # %bb.0:
; AVX-NEXT: vpaddd %xmm2, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = add <4 x i32> %b, %c
%2 = add <4 x i32> %a, %1
%3 = sub <4 x i32> %2, %b
ret <4 x i32> %3
}
; fold ((A+(B-C))-B) -> A-C
define <4 x i32> @combine_vec_sub_add_sub(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
; SSE-LABEL: combine_vec_sub_add_sub:
; SSE: # %bb.0:
; SSE-NEXT: psubd %xmm2, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_sub_add_sub:
; AVX: # %bb.0:
; AVX-NEXT: vpsubd %xmm2, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = sub <4 x i32> %b, %c
%2 = add <4 x i32> %a, %1
%3 = sub <4 x i32> %2, %b
ret <4 x i32> %3
}
; fold ((A-(B-C))-C) -> A-B
define <4 x i32> @combine_vec_sub_sub_sub(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
; SSE-LABEL: combine_vec_sub_sub_sub:
; SSE: # %bb.0:
; SSE-NEXT: psubd %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_sub_sub_sub:
; AVX: # %bb.0:
; AVX-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = sub <4 x i32> %b, %c
%2 = sub <4 x i32> %a, %1
%3 = sub <4 x i32> %2, %c
ret <4 x i32> %3
}
; fold undef-A -> undef
define <4 x i32> @combine_vec_sub_undef0(<4 x i32> %a) {
; CHECK-LABEL: combine_vec_sub_undef0:
; CHECK: # %bb.0:
; CHECK-NEXT: retq
%1 = sub <4 x i32> undef, %a
ret <4 x i32> %1
}
; fold A-undef -> undef
define <4 x i32> @combine_vec_sub_undef1(<4 x i32> %a) {
; CHECK-LABEL: combine_vec_sub_undef1:
; CHECK: # %bb.0:
; CHECK-NEXT: retq
%1 = sub <4 x i32> %a, undef
ret <4 x i32> %1
}
; sub X, (sext Y i1) -> add X, (and Y 1)
define <4 x i32> @combine_vec_add_sext(<4 x i32> %x, <4 x i1> %y) {
; SSE-LABEL: combine_vec_add_sext:
; SSE: # %bb.0:
; SSE-NEXT: pslld $31, %xmm1
; SSE-NEXT: psrad $31, %xmm1
; SSE-NEXT: psubd %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_add_sext:
; AVX: # %bb.0:
; AVX-NEXT: vpslld $31, %xmm1, %xmm1
; AVX-NEXT: vpsrad $31, %xmm1, %xmm1
; AVX-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = sext <4 x i1> %y to <4 x i32>
%2 = sub <4 x i32> %x, %1
ret <4 x i32> %2
}
; sub X, (sextinreg Y i1) -> add X, (and Y 1)
define <4 x i32> @combine_vec_sub_sextinreg(<4 x i32> %x, <4 x i32> %y) {
; SSE-LABEL: combine_vec_sub_sextinreg:
; SSE: # %bb.0:
; SSE-NEXT: pslld $31, %xmm1
; SSE-NEXT: psrad $31, %xmm1
; SSE-NEXT: psubd %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_sub_sextinreg:
; AVX: # %bb.0:
; AVX-NEXT: vpslld $31, %xmm1, %xmm1
; AVX-NEXT: vpsrad $31, %xmm1, %xmm1
; AVX-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = shl <4 x i32> %y, <i32 31, i32 31, i32 31, i32 31>
%2 = ashr <4 x i32> %1, <i32 31, i32 31, i32 31, i32 31>
%3 = sub <4 x i32> %x, %2
ret <4 x i32> %3
}
; sub C1, (xor X, C1) -> add (xor X, ~C2), C1+1
define i32 @combine_sub_xor_consts(i32 %x) {
; CHECK-LABEL: combine_sub_xor_consts:
; CHECK: # %bb.0:
; CHECK-NEXT: # kill: def $edi killed $edi def $rdi
; CHECK-NEXT: xorl $-32, %edi
; CHECK-NEXT: leal 33(%rdi), %eax
; CHECK-NEXT: retq
%xor = xor i32 %x, 31
%sub = sub i32 32, %xor
ret i32 %sub
}
define <4 x i32> @combine_vec_sub_xor_consts(<4 x i32> %x) {
; SSE-LABEL: combine_vec_sub_xor_consts:
; SSE: # %bb.0:
; SSE-NEXT: pxor {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; SSE-NEXT: paddd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_sub_xor_consts:
; AVX: # %bb.0:
; AVX-NEXT: vpxor {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0, %xmm0
; AVX-NEXT: vpaddd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0, %xmm0
; AVX-NEXT: retq
%xor = xor <4 x i32> %x, <i32 28, i32 29, i32 -1, i32 -31>
%sub = sub <4 x i32> <i32 1, i32 2, i32 3, i32 4>, %xor
ret <4 x i32> %sub
}
define <4 x i32> @combine_vec_neg_xor_consts(<4 x i32> %x) {
; SSE-LABEL: combine_vec_neg_xor_consts:
; SSE: # %bb.0:
; SSE-NEXT: pcmpeqd %xmm1, %xmm1
; SSE-NEXT: psubd %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_neg_xor_consts:
; AVX: # %bb.0:
; AVX-NEXT: vpcmpeqd %xmm1, %xmm1, %xmm1
; AVX-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%xor = xor <4 x i32> %x, <i32 -1, i32 -1, i32 -1, i32 -1>
%sub = sub <4 x i32> zeroinitializer, %xor
ret <4 x i32> %sub
}