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[X86] Tests for unsigned saturation downconvert detection.

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One more test for smax(smin(x, C2), C1) pattern.

llvm-svn: 330090
This commit is contained in:
Artur Gainullin 2018-04-14 20:10:17 +00:00
parent c6a60c9c99
commit 93a17ddc3d
1 changed files with 32 additions and 4 deletions
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36
test/CodeGen/X86/avx512-trunc.ll
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@ -775,9 +775,8 @@ define <16 x i8> @usat_trunc_db_256(<8 x i32> %x) {
; %res = trunc %d
define void @smax_usat_trunc_wb_256_mem(<16 x i16> %i, <16 x i8>* %res) {
; KNL-LABEL: smax_usat_trunc_wb_256_mem:
define void @smax_usat_trunc_wb_256_mem1(<16 x i16> %i, <16 x i8>* %res) {
; KNL-LABEL: smax_usat_trunc_wb_256_mem1:
; KNL: ## %bb.0:
; KNL-NEXT: vpxor %xmm1, %xmm1, %xmm1
; KNL-NEXT: vpmaxsw %ymm1, %ymm0, %ymm0
@ -787,7 +786,7 @@ define void @smax_usat_trunc_wb_256_mem(<16 x i16> %i, <16 x i8>* %res) {
; KNL-NEXT: vzeroupper
; KNL-NEXT: retq
;
; SKX-LABEL: smax_usat_trunc_wb_256_mem:
; SKX-LABEL: smax_usat_trunc_wb_256_mem1:
; SKX: ## %bb.0:
; SKX-NEXT: vpxor %xmm1, %xmm1, %xmm1
; SKX-NEXT: vpmaxsw %ymm1, %ymm0, %ymm0
@ -804,6 +803,35 @@ define void @smax_usat_trunc_wb_256_mem(<16 x i16> %i, <16 x i8>* %res) {
ret void
}
; Test for smax(smin(x, C2), C1).
define void @smax_usat_trunc_wb_256_mem2(<16 x i16> %i, <16 x i8>* %res) {
; KNL-LABEL: smax_usat_trunc_wb_256_mem2:
; KNL: ## %bb.0:
; KNL-NEXT: vpminsw {{.*}}(%rip), %ymm0, %ymm0
; KNL-NEXT: vpxor %xmm1, %xmm1, %xmm1
; KNL-NEXT: vpmaxsw %ymm1, %ymm0, %ymm0
; KNL-NEXT: vpmovsxwd %ymm0, %zmm0
; KNL-NEXT: vpmovdb %zmm0, (%rdi)
; KNL-NEXT: vzeroupper
; KNL-NEXT: retq
;
; SKX-LABEL: smax_usat_trunc_wb_256_mem2:
; SKX: ## %bb.0:
; SKX-NEXT: vpminsw {{.*}}(%rip), %ymm0, %ymm0
; SKX-NEXT: vpxor %xmm1, %xmm1, %xmm1
; SKX-NEXT: vpmaxsw %ymm1, %ymm0, %ymm0
; SKX-NEXT: vpmovwb %ymm0, (%rdi)
; SKX-NEXT: vzeroupper
; SKX-NEXT: retq
%x1 = icmp slt <16 x i16> %i, <i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255>
%x2 = select <16 x i1> %x1, <16 x i16> %i, <16 x i16> <i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255>
%x3 = icmp sgt <16 x i16> %x2, <i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0>
%x5 = select <16 x i1> %x3, <16 x i16> %x2, <16 x i16> <i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0>
%x6 = trunc <16 x i16> %x5 to <16 x i8>
store <16 x i8> %x6, <16 x i8>* %res, align 1
ret void
}
define <16 x i8> @smax_usat_trunc_wb_256(<16 x i16> %i) {
; KNL-LABEL: smax_usat_trunc_wb_256:
; KNL: ## %bb.0: