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[x86] add tests for decrement+sext; NFC 

llvm-svn: 357251
This commit is contained in:
Sanjay Patel 2019-03-29 13:34:48 +00:00
parent d83a559318
commit 881bcbe094
2 changed files with 105 additions and 0 deletions
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19
llvm/test/CodeGen/X86/sext-i1.ll
View File

@ -173,3 +173,22 @@ define i32 @select_0_or_1s_signext(i1 signext %cond) {
ret i32 %sext
}
define i32 @zext_decrement_sext(i8 %x) {
; X32-LABEL: zext_decrement_sext:
; X32: # %bb.0:
; X32-NEXT: movzbl {{[0-9]+}}(%esp), %eax
; X32-NEXT: decl %eax
; X32-NEXT: retl
;
; X64-LABEL: zext_decrement_sext:
; X64: # %bb.0:
; X64-NEXT: movzbl %dil, %eax
; X64-NEXT: decl %eax
; X64-NEXT: cwtl
; X64-NEXT: retq
%z = zext i8 %x to i16
%dec = add i16 %z, -1
%r = sext i16 %dec to i32
ret i32 %r
}

86
llvm/test/CodeGen/X86/vector-sext.ll
View File

@ -6421,3 +6421,89 @@ define <8 x i32> @zext_negate_sext(<8 x i8> %x) {
%r = sext <8 x i16> %neg to <8 x i32>
ret <8 x i32> %r
}
define <8 x i32> @zext_decremenet_sext(<8 x i8> %x) {
; SSE2-LABEL: zext_decremenet_sext:
; SSE2: # %bb.0:
; SSE2-NEXT: pand {{.*}}(%rip), %xmm0
; SSE2-NEXT: pcmpeqd %xmm1, %xmm1
; SSE2-NEXT: paddw %xmm0, %xmm1
; SSE2-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1],xmm0[2],xmm1[2],xmm0[3],xmm1[3]
; SSE2-NEXT: psrad $16, %xmm0
; SSE2-NEXT: punpckhwd {{.*#+}} xmm1 = xmm1[4,4,5,5,6,6,7,7]
; SSE2-NEXT: psrad $16, %xmm1
; SSE2-NEXT: retq
;
; SSSE3-LABEL: zext_decremenet_sext:
; SSSE3: # %bb.0:
; SSSE3-NEXT: pand {{.*}}(%rip), %xmm0
; SSSE3-NEXT: pcmpeqd %xmm1, %xmm1
; SSSE3-NEXT: paddw %xmm0, %xmm1
; SSSE3-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1],xmm0[2],xmm1[2],xmm0[3],xmm1[3]
; SSSE3-NEXT: psrad $16, %xmm0
; SSSE3-NEXT: punpckhwd {{.*#+}} xmm1 = xmm1[4,4,5,5,6,6,7,7]
; SSSE3-NEXT: psrad $16, %xmm1
; SSSE3-NEXT: retq
;
; SSE41-LABEL: zext_decremenet_sext:
; SSE41: # %bb.0:
; SSE41-NEXT: pand {{.*}}(%rip), %xmm0
; SSE41-NEXT: pcmpeqd %xmm1, %xmm1
; SSE41-NEXT: paddw %xmm0, %xmm1
; SSE41-NEXT: pmovsxwd %xmm1, %xmm0
; SSE41-NEXT: pshufd {{.*#+}} xmm1 = xmm1[2,3,0,1]
; SSE41-NEXT: pmovsxwd %xmm1, %xmm1
; SSE41-NEXT: retq
;
; AVX1-LABEL: zext_decremenet_sext:
; AVX1: # %bb.0:
; AVX1-NEXT: vpand {{.*}}(%rip), %xmm0, %xmm0
; AVX1-NEXT: vpcmpeqd %xmm1, %xmm1, %xmm1
; AVX1-NEXT: vpaddw %xmm1, %xmm0, %xmm0
; AVX1-NEXT: vpmovsxwd %xmm0, %xmm1
; AVX1-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
; AVX1-NEXT: vpmovsxwd %xmm0, %xmm0
; AVX1-NEXT: vinsertf128 $1, %xmm0, %ymm1, %ymm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: zext_decremenet_sext:
; AVX2: # %bb.0:
; AVX2-NEXT: vpand {{.*}}(%rip), %xmm0, %xmm0
; AVX2-NEXT: vpcmpeqd %xmm1, %xmm1, %xmm1
; AVX2-NEXT: vpaddw %xmm1, %xmm0, %xmm0
; AVX2-NEXT: vpmovsxwd %xmm0, %ymm0
; AVX2-NEXT: retq
;
; AVX512-LABEL: zext_decremenet_sext:
; AVX512: # %bb.0:
; AVX512-NEXT: vpand {{.*}}(%rip), %xmm0, %xmm0
; AVX512-NEXT: vpcmpeqd %xmm1, %xmm1, %xmm1
; AVX512-NEXT: vpaddw %xmm1, %xmm0, %xmm0
; AVX512-NEXT: vpmovsxwd %xmm0, %ymm0
; AVX512-NEXT: retq
;
; X32-SSE2-LABEL: zext_decremenet_sext:
; X32-SSE2: # %bb.0:
; X32-SSE2-NEXT: pand {{\.LCPI.*}}, %xmm0
; X32-SSE2-NEXT: pcmpeqd %xmm1, %xmm1
; X32-SSE2-NEXT: paddw %xmm0, %xmm1
; X32-SSE2-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1],xmm0[2],xmm1[2],xmm0[3],xmm1[3]
; X32-SSE2-NEXT: psrad $16, %xmm0
; X32-SSE2-NEXT: punpckhwd {{.*#+}} xmm1 = xmm1[4,4,5,5,6,6,7,7]
; X32-SSE2-NEXT: psrad $16, %xmm1
; X32-SSE2-NEXT: retl
;
; X32-SSE41-LABEL: zext_decremenet_sext:
; X32-SSE41: # %bb.0:
; X32-SSE41-NEXT: pand {{\.LCPI.*}}, %xmm0
; X32-SSE41-NEXT: pcmpeqd %xmm1, %xmm1
; X32-SSE41-NEXT: paddw %xmm0, %xmm1
; X32-SSE41-NEXT: pmovsxwd %xmm1, %xmm0
; X32-SSE41-NEXT: pshufd {{.*#+}} xmm1 = xmm1[2,3,0,1]
; X32-SSE41-NEXT: pmovsxwd %xmm1, %xmm1
; X32-SSE41-NEXT: retl
%z = zext <8 x i8> %x to <8 x i16>
%dec = add <8 x i16> %z, <i16 -1, i16 -1, i16 -1, i16 -1, i16 -1, i16 -1, i16 -1, i16 -1>
%r = sext <8 x i16> %dec to <8 x i32>
ret <8 x i32> %r
}