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llvm-for-llvmta/test/CodeGen/X86/combine-srem.ll

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; 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-prefix=CHECK --check-prefix=SSE
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX1
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX2
; fold (srem x, 1) -> 0
define i32 @combine_srem_by_one(i32 %x) {
; CHECK-LABEL: combine_srem_by_one:
; CHECK: # %bb.0:
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: retq
%1 = srem i32 %x, 1
ret i32 %1
}
define <4 x i32> @combine_vec_srem_by_one(<4 x i32> %x) {
; SSE-LABEL: combine_vec_srem_by_one:
; SSE: # %bb.0:
; SSE-NEXT: xorps %xmm0, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_srem_by_one:
; AVX: # %bb.0:
; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = srem <4 x i32> %x, <i32 1, i32 1, i32 1, i32 1>
ret <4 x i32> %1
}
; fold (srem x, -1) -> 0
define i32 @combine_srem_by_negone(i32 %x) {
; CHECK-LABEL: combine_srem_by_negone:
; CHECK: # %bb.0:
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: retq
%1 = srem i32 %x, -1
ret i32 %1
}
define <4 x i32> @combine_vec_srem_by_negone(<4 x i32> %x) {
; SSE-LABEL: combine_vec_srem_by_negone:
; SSE: # %bb.0:
; SSE-NEXT: xorps %xmm0, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_srem_by_negone:
; AVX: # %bb.0:
; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = srem <4 x i32> %x, <i32 -1, i32 -1, i32 -1, i32 -1>
ret <4 x i32> %1
}
; TODO fold (srem x, INT_MIN)
define i32 @combine_srem_by_minsigned(i32 %x) {
; CHECK-LABEL: combine_srem_by_minsigned:
; CHECK: # %bb.0:
; CHECK-NEXT: # kill: def $edi killed $edi def $rdi
; CHECK-NEXT: leal 2147483647(%rdi), %eax
; CHECK-NEXT: testl %edi, %edi
; CHECK-NEXT: cmovnsl %edi, %eax
; CHECK-NEXT: andl $-2147483648, %eax # imm = 0x80000000
; CHECK-NEXT: addl %edi, %eax
; CHECK-NEXT: retq
%1 = srem i32 %x, -2147483648
ret i32 %1
}
define <4 x i32> @combine_vec_srem_by_minsigned(<4 x i32> %x) {
; SSE-LABEL: combine_vec_srem_by_minsigned:
; SSE: # %bb.0:
; SSE-NEXT: movdqa %xmm0, %xmm1
; SSE-NEXT: psrad $31, %xmm1
; SSE-NEXT: psrld $1, %xmm1
; SSE-NEXT: paddd %xmm0, %xmm1
; SSE-NEXT: pand {{.*}}(%rip), %xmm1
; SSE-NEXT: psubd %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX1-LABEL: combine_vec_srem_by_minsigned:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsrad $31, %xmm0, %xmm1
; AVX1-NEXT: vpsrld $1, %xmm1, %xmm1
; AVX1-NEXT: vpaddd %xmm1, %xmm0, %xmm1
; AVX1-NEXT: vpand {{.*}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: combine_vec_srem_by_minsigned:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsrad $31, %xmm0, %xmm1
; AVX2-NEXT: vpsrld $1, %xmm1, %xmm1
; AVX2-NEXT: vpaddd %xmm1, %xmm0, %xmm1
; AVX2-NEXT: vpbroadcastd {{.*#+}} xmm2 = [2147483648,2147483648,2147483648,2147483648]
; AVX2-NEXT: vpand %xmm2, %xmm1, %xmm1
; AVX2-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
%1 = srem <4 x i32> %x, <i32 -2147483648, i32 -2147483648, i32 -2147483648, i32 -2147483648>
ret <4 x i32> %1
}
; fold (srem 0, x) -> 0
define i32 @combine_srem_zero(i32 %x) {
; CHECK-LABEL: combine_srem_zero:
; CHECK: # %bb.0:
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: retq
%1 = srem i32 0, %x
ret i32 %1
}
define <4 x i32> @combine_vec_srem_zero(<4 x i32> %x) {
; SSE-LABEL: combine_vec_srem_zero:
; SSE: # %bb.0:
; SSE-NEXT: xorps %xmm0, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_srem_zero:
; AVX: # %bb.0:
; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = srem <4 x i32> zeroinitializer, %x
ret <4 x i32> %1
}
; fold (srem x, x) -> 0
define i32 @combine_srem_dupe(i32 %x) {
; CHECK-LABEL: combine_srem_dupe:
; CHECK: # %bb.0:
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: retq
%1 = srem i32 %x, %x
ret i32 %1
}
define <4 x i32> @combine_vec_srem_dupe(<4 x i32> %x) {
; SSE-LABEL: combine_vec_srem_dupe:
; SSE: # %bb.0:
; SSE-NEXT: xorps %xmm0, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_srem_dupe:
; AVX: # %bb.0:
; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = srem <4 x i32> %x, %x
ret <4 x i32> %1
}
; fold (srem x, y) -> (urem x, y) iff x and y are positive
define <4 x i32> @combine_vec_srem_by_pos0(<4 x i32> %x) {
; SSE-LABEL: combine_vec_srem_by_pos0:
; SSE: # %bb.0:
; SSE-NEXT: andps {{.*}}(%rip), %xmm0
; SSE-NEXT: retq
;
; AVX1-LABEL: combine_vec_srem_by_pos0:
; AVX1: # %bb.0:
; AVX1-NEXT: vandps {{.*}}(%rip), %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: combine_vec_srem_by_pos0:
; AVX2: # %bb.0:
; AVX2-NEXT: vbroadcastss {{.*#+}} xmm1 = [3,3,3,3]
; AVX2-NEXT: vandps %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
%1 = and <4 x i32> %x, <i32 255, i32 255, i32 255, i32 255>
%2 = srem <4 x i32> %1, <i32 4, i32 4, i32 4, i32 4>
ret <4 x i32> %2
}
define <4 x i32> @combine_vec_srem_by_pos1(<4 x i32> %x) {
; SSE-LABEL: combine_vec_srem_by_pos1:
; SSE: # %bb.0:
; SSE-NEXT: andps {{.*}}(%rip), %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_srem_by_pos1:
; AVX: # %bb.0:
; AVX-NEXT: vandps {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT: retq
%1 = and <4 x i32> %x, <i32 255, i32 255, i32 255, i32 255>
%2 = srem <4 x i32> %1, <i32 1, i32 4, i32 8, i32 16>
ret <4 x i32> %2
}
; fold (srem x, (1 << c)) -> x - (x / (1 << c)) * (1 << c).
define <4 x i32> @combine_vec_srem_by_pow2a(<4 x i32> %x) {
; SSE-LABEL: combine_vec_srem_by_pow2a:
; SSE: # %bb.0:
; SSE-NEXT: movdqa %xmm0, %xmm1
; SSE-NEXT: psrad $31, %xmm1
; SSE-NEXT: psrld $30, %xmm1
; SSE-NEXT: paddd %xmm0, %xmm1
; SSE-NEXT: pand {{.*}}(%rip), %xmm1
; SSE-NEXT: psubd %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX1-LABEL: combine_vec_srem_by_pow2a:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsrad $31, %xmm0, %xmm1
; AVX1-NEXT: vpsrld $30, %xmm1, %xmm1
; AVX1-NEXT: vpaddd %xmm1, %xmm0, %xmm1
; AVX1-NEXT: vpand {{.*}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: combine_vec_srem_by_pow2a:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsrad $31, %xmm0, %xmm1
; AVX2-NEXT: vpsrld $30, %xmm1, %xmm1
; AVX2-NEXT: vpaddd %xmm1, %xmm0, %xmm1
; AVX2-NEXT: vpbroadcastd {{.*#+}} xmm2 = [4294967292,4294967292,4294967292,4294967292]
; AVX2-NEXT: vpand %xmm2, %xmm1, %xmm1
; AVX2-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
%1 = srem <4 x i32> %x, <i32 4, i32 4, i32 4, i32 4>
ret <4 x i32> %1
}
define <4 x i32> @combine_vec_srem_by_pow2a_neg(<4 x i32> %x) {
; SSE-LABEL: combine_vec_srem_by_pow2a_neg:
; SSE: # %bb.0:
; SSE-NEXT: movdqa %xmm0, %xmm1
; SSE-NEXT: psrad $31, %xmm1
; SSE-NEXT: psrld $30, %xmm1
; SSE-NEXT: paddd %xmm0, %xmm1
; SSE-NEXT: psrld $2, %xmm1
; SSE-NEXT: pxor %xmm2, %xmm2
; SSE-NEXT: psubd %xmm1, %xmm2
; SSE-NEXT: pslld $2, %xmm2
; SSE-NEXT: paddd %xmm2, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_vec_srem_by_pow2a_neg:
; AVX: # %bb.0:
; AVX-NEXT: vpsrad $31, %xmm0, %xmm1
; AVX-NEXT: vpsrld $30, %xmm1, %xmm1
; AVX-NEXT: vpaddd %xmm1, %xmm0, %xmm1
; AVX-NEXT: vpsrld $2, %xmm1, %xmm1
; AVX-NEXT: vpxor %xmm2, %xmm2, %xmm2
; AVX-NEXT: vpsubd %xmm1, %xmm2, %xmm1
; AVX-NEXT: vpslld $2, %xmm1, %xmm1
; AVX-NEXT: vpaddd %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%1 = srem <4 x i32> %x, <i32 -4, i32 -4, i32 -4, i32 -4>
ret <4 x i32> %1
}
define <4 x i32> @combine_vec_srem_by_pow2b(<4 x i32> %x) {
; SSE-LABEL: combine_vec_srem_by_pow2b:
; SSE: # %bb.0:
; SSE-NEXT: movdqa %xmm0, %xmm1
; SSE-NEXT: psrad $31, %xmm1
; SSE-NEXT: movdqa %xmm1, %xmm2
; SSE-NEXT: psrld $29, %xmm2
; SSE-NEXT: movdqa %xmm1, %xmm3
; SSE-NEXT: psrld $31, %xmm3
; SSE-NEXT: pblendw {{.*#+}} xmm3 = xmm3[0,1,2,3],xmm2[4,5,6,7]
; SSE-NEXT: psrld $30, %xmm1
; SSE-NEXT: pblendw {{.*#+}} xmm1 = xmm1[0,1],xmm3[2,3],xmm1[4,5],xmm3[6,7]
; SSE-NEXT: paddd %xmm0, %xmm1
; SSE-NEXT: movdqa %xmm1, %xmm2
; SSE-NEXT: psrad $3, %xmm2
; SSE-NEXT: movdqa %xmm1, %xmm3
; SSE-NEXT: psrad $1, %xmm3
; SSE-NEXT: pblendw {{.*#+}} xmm3 = xmm3[0,1,2,3],xmm2[4,5,6,7]
; SSE-NEXT: psrad $2, %xmm1
; SSE-NEXT: pblendw {{.*#+}} xmm1 = xmm1[0,1],xmm3[2,3],xmm1[4,5],xmm3[6,7]
; SSE-NEXT: pblendw {{.*#+}} xmm1 = xmm0[0,1],xmm1[2,3,4,5,6,7]
; SSE-NEXT: pmulld {{.*}}(%rip), %xmm1
; SSE-NEXT: psubd %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX1-LABEL: combine_vec_srem_by_pow2b:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsrad $31, %xmm0, %xmm1
; AVX1-NEXT: vpsrld $29, %xmm1, %xmm2
; AVX1-NEXT: vpsrld $31, %xmm1, %xmm3
; AVX1-NEXT: vpblendw {{.*#+}} xmm2 = xmm3[0,1,2,3],xmm2[4,5,6,7]
; AVX1-NEXT: vpsrld $30, %xmm1, %xmm1
; AVX1-NEXT: vpblendw {{.*#+}} xmm1 = xmm1[0,1],xmm2[2,3],xmm1[4,5],xmm2[6,7]
; AVX1-NEXT: vpaddd %xmm1, %xmm0, %xmm1
; AVX1-NEXT: vpsrad $3, %xmm1, %xmm2
; AVX1-NEXT: vpsrad $1, %xmm1, %xmm3
; AVX1-NEXT: vpblendw {{.*#+}} xmm2 = xmm3[0,1,2,3],xmm2[4,5,6,7]
; AVX1-NEXT: vpsrad $2, %xmm1, %xmm1
; AVX1-NEXT: vpblendw {{.*#+}} xmm1 = xmm1[0,1],xmm2[2,3],xmm1[4,5],xmm2[6,7]
; AVX1-NEXT: vpblendw {{.*#+}} xmm1 = xmm0[0,1],xmm1[2,3,4,5,6,7]
; AVX1-NEXT: vpmulld {{.*}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: combine_vec_srem_by_pow2b:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsrad $31, %xmm0, %xmm1
; AVX2-NEXT: vpsrlvd {{.*}}(%rip), %xmm1, %xmm1
; AVX2-NEXT: vpaddd %xmm1, %xmm0, %xmm1
; AVX2-NEXT: vmovdqa {{.*#+}} xmm2 = [0,1,2,3]
; AVX2-NEXT: vpsravd %xmm2, %xmm1, %xmm1
; AVX2-NEXT: vpblendd {{.*#+}} xmm1 = xmm0[0],xmm1[1,2,3]
; AVX2-NEXT: vpsllvd %xmm2, %xmm1, %xmm1
; AVX2-NEXT: vpsubd %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
%1 = srem <4 x i32> %x, <i32 1, i32 2, i32 4, i32 8>
ret <4 x i32> %1
}
define <4 x i32> @combine_vec_srem_by_pow2b_neg(<4 x i32> %x) {
; SSE-LABEL: combine_vec_srem_by_pow2b_neg:
; SSE: # %bb.0:
; SSE-NEXT: movdqa %xmm0, %xmm1
; SSE-NEXT: psrad $31, %xmm1
; SSE-NEXT: movdqa %xmm1, %xmm2
; SSE-NEXT: psrld $28, %xmm2
; SSE-NEXT: movdqa %xmm1, %xmm3
; SSE-NEXT: psrld $30, %xmm3
; SSE-NEXT: pblendw {{.*#+}} xmm3 = xmm3[0,1,2,3],xmm2[4,5,6,7]
; SSE-NEXT: movdqa %xmm1, %xmm2
; SSE-NEXT: psrld $29, %xmm2
; SSE-NEXT: psrld $31, %xmm1
; SSE-NEXT: pblendw {{.*#+}} xmm1 = xmm1[0,1,2,3],xmm2[4,5,6,7]
; SSE-NEXT: pblendw {{.*#+}} xmm1 = xmm1[0,1],xmm3[2,3],xmm1[4,5],xmm3[6,7]
; SSE-NEXT: paddd %xmm0, %xmm1
; SSE-NEXT: movdqa %xmm1, %xmm2
; SSE-NEXT: psrad $4, %xmm2
; SSE-NEXT: movdqa %xmm1, %xmm3
; SSE-NEXT: psrad $2, %xmm3
; SSE-NEXT: pblendw {{.*#+}} xmm3 = xmm3[0,1,2,3],xmm2[4,5,6,7]
; SSE-NEXT: movdqa %xmm1, %xmm2
; SSE-NEXT: psrad $3, %xmm2
; SSE-NEXT: psrad $1, %xmm1
; SSE-NEXT: pblendw {{.*#+}} xmm1 = xmm1[0,1,2,3],xmm2[4,5,6,7]
; SSE-NEXT: pblendw {{.*#+}} xmm1 = xmm1[0,1],xmm3[2,3],xmm1[4,5],xmm3[6,7]
; SSE-NEXT: pmulld {{.*}}(%rip), %xmm1
; SSE-NEXT: paddd %xmm0, %xmm1
; SSE-NEXT: movdqa %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX1-LABEL: combine_vec_srem_by_pow2b_neg:
; AVX1: # %bb.0:
; AVX1-NEXT: vpsrad $31, %xmm0, %xmm1
; AVX1-NEXT: vpsrld $28, %xmm1, %xmm2
; AVX1-NEXT: vpsrld $30, %xmm1, %xmm3
; AVX1-NEXT: vpblendw {{.*#+}} xmm2 = xmm3[0,1,2,3],xmm2[4,5,6,7]
; AVX1-NEXT: vpsrld $29, %xmm1, %xmm3
; AVX1-NEXT: vpsrld $31, %xmm1, %xmm1
; AVX1-NEXT: vpblendw {{.*#+}} xmm1 = xmm1[0,1,2,3],xmm3[4,5,6,7]
; AVX1-NEXT: vpblendw {{.*#+}} xmm1 = xmm1[0,1],xmm2[2,3],xmm1[4,5],xmm2[6,7]
; AVX1-NEXT: vpaddd %xmm1, %xmm0, %xmm1
; AVX1-NEXT: vpsrad $4, %xmm1, %xmm2
; AVX1-NEXT: vpsrad $2, %xmm1, %xmm3
; AVX1-NEXT: vpblendw {{.*#+}} xmm2 = xmm3[0,1,2,3],xmm2[4,5,6,7]
; AVX1-NEXT: vpsrad $3, %xmm1, %xmm3
; AVX1-NEXT: vpsrad $1, %xmm1, %xmm1
; AVX1-NEXT: vpblendw {{.*#+}} xmm1 = xmm1[0,1,2,3],xmm3[4,5,6,7]
; AVX1-NEXT: vpblendw {{.*#+}} xmm1 = xmm1[0,1],xmm2[2,3],xmm1[4,5],xmm2[6,7]
; AVX1-NEXT: vpmulld {{.*}}(%rip), %xmm1, %xmm1
; AVX1-NEXT: vpaddd %xmm1, %xmm0, %xmm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: combine_vec_srem_by_pow2b_neg:
; AVX2: # %bb.0:
; AVX2-NEXT: vpsrad $31, %xmm0, %xmm1
; AVX2-NEXT: vpsrlvd {{.*}}(%rip), %xmm1, %xmm1
; AVX2-NEXT: vpaddd %xmm1, %xmm0, %xmm1
; AVX2-NEXT: vpsravd {{.*}}(%rip), %xmm1, %xmm1
; AVX2-NEXT: vpmulld {{.*}}(%rip), %xmm1, %xmm1
; AVX2-NEXT: vpaddd %xmm1, %xmm0, %xmm0
; AVX2-NEXT: retq
%1 = srem <4 x i32> %x, <i32 -2, i32 -4, i32 -8, i32 -16>
ret <4 x i32> %1
}
; OSS-Fuzz #6883
; https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6883
define i32 @ossfuzz6883() {
; CHECK-LABEL: ossfuzz6883:
; CHECK: # %bb.0:
; CHECK-NEXT: movl (%rax), %ecx
; CHECK-NEXT: movl $2147483647, %eax # imm = 0x7FFFFFFF
; CHECK-NEXT: xorl %edx, %edx
; CHECK-NEXT: idivl %ecx
; CHECK-NEXT: movl %eax, %esi
; CHECK-NEXT: movl $2147483647, %eax # imm = 0x7FFFFFFF
; CHECK-NEXT: xorl %edx, %edx
; CHECK-NEXT: divl %ecx
; CHECK-NEXT: movl %eax, %edi
; CHECK-NEXT: movl %esi, %eax
; CHECK-NEXT: cltd
; CHECK-NEXT: idivl %edi
; CHECK-NEXT: movl %edx, %esi
; CHECK-NEXT: movl %ecx, %eax
; CHECK-NEXT: cltd
; CHECK-NEXT: idivl %esi
; CHECK-NEXT: movl %edx, %edi
; CHECK-NEXT: movl %ecx, %eax
; CHECK-NEXT: xorl %edx, %edx
; CHECK-NEXT: divl %esi
; CHECK-NEXT: andl %edi, %eax
; CHECK-NEXT: retq
%B17 = or i32 0, 2147483647
%L6 = load i32, i32* undef
%B11 = sdiv i32 %B17, %L6
%B13 = udiv i32 %B17, %L6
%B14 = srem i32 %B11, %B13
%B16 = srem i32 %L6, %B14
%B10 = udiv i32 %L6, %B14
%B6 = and i32 %B16, %B10
ret i32 %B6
}
define i1 @bool_srem(i1 %x, i1 %y) {
; CHECK-LABEL: bool_srem:
; CHECK: # %bb.0:
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: retq
%r = srem i1 %x, %y
ret i1 %r
}
define <4 x i1> @boolvec_srem(<4 x i1> %x, <4 x i1> %y) {
; SSE-LABEL: boolvec_srem:
; SSE: # %bb.0:
; SSE-NEXT: xorps %xmm0, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: boolvec_srem:
; AVX: # %bb.0:
; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0
; AVX-NEXT: retq
%r = srem <4 x i1> %x, %y
ret <4 x i1> %r
}
define i32 @combine_srem_two(i32 %x) {
; CHECK-LABEL: combine_srem_two:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: movl %edi, %ecx
; CHECK-NEXT: shrl $31, %ecx
; CHECK-NEXT: addl %edi, %ecx
; CHECK-NEXT: andl $-2, %ecx
; CHECK-NEXT: subl %ecx, %eax
; CHECK-NEXT: retq
%1 = srem i32 %x, 2
ret i32 %1
}
define i32 @combine_srem_negtwo(i32 %x) {
; CHECK-LABEL: combine_srem_negtwo:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: movl %edi, %ecx
; CHECK-NEXT: shrl $31, %ecx
; CHECK-NEXT: addl %edi, %ecx
; CHECK-NEXT: andl $-2, %ecx
; CHECK-NEXT: subl %ecx, %eax
; CHECK-NEXT: retq
%1 = srem i32 %x, -2
ret i32 %1
}
define i8 @combine_i8_srem_negpow2(i8 %x) {
; CHECK-LABEL: combine_i8_srem_negpow2:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: movl %eax, %ecx
; CHECK-NEXT: sarb $7, %cl
; CHECK-NEXT: shrb $2, %cl
; CHECK-NEXT: addb %al, %cl
; CHECK-NEXT: andb $-64, %cl
; CHECK-NEXT: subb %cl, %al
; CHECK-NEXT: # kill: def $al killed $al killed $eax
; CHECK-NEXT: retq
%1 = srem i8 %x, -64
ret i8 %1
}
define i16 @combine_i16_srem_pow2(i16 %x) {
; CHECK-LABEL: combine_i16_srem_pow2:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: leal 15(%rax), %ecx
; CHECK-NEXT: testw %ax, %ax
; CHECK-NEXT: cmovnsl %edi, %ecx
; CHECK-NEXT: andl $-16, %ecx
; CHECK-NEXT: subl %ecx, %eax
; CHECK-NEXT: # kill: def $ax killed $ax killed $rax
; CHECK-NEXT: retq
%1 = srem i16 %x, 16
ret i16 %1
}
define i16 @combine_i16_srem_negpow2(i16 %x) {
; CHECK-LABEL: combine_i16_srem_negpow2:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: leal 255(%rax), %ecx
; CHECK-NEXT: testw %ax, %ax
; CHECK-NEXT: cmovnsl %edi, %ecx
; CHECK-NEXT: andl $-256, %ecx
; CHECK-NEXT: subl %ecx, %eax
; CHECK-NEXT: # kill: def $ax killed $ax killed $rax
; CHECK-NEXT: retq
%1 = srem i16 %x, -256
ret i16 %1
}
define i32 @combine_srem_pow2(i32 %x) {
; CHECK-LABEL: combine_srem_pow2:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: leal 15(%rax), %ecx
; CHECK-NEXT: testl %edi, %edi
; CHECK-NEXT: cmovnsl %edi, %ecx
; CHECK-NEXT: andl $-16, %ecx
; CHECK-NEXT: subl %ecx, %eax
; CHECK-NEXT: # kill: def $eax killed $eax killed $rax
; CHECK-NEXT: retq
%1 = srem i32 %x, 16
ret i32 %1
}
define i32 @combine_srem_negpow2(i32 %x) {
; CHECK-LABEL: combine_srem_negpow2:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: leal 255(%rax), %ecx
; CHECK-NEXT: testl %edi, %edi
; CHECK-NEXT: cmovnsl %edi, %ecx
; CHECK-NEXT: andl $-256, %ecx
; CHECK-NEXT: subl %ecx, %eax
; CHECK-NEXT: # kill: def $eax killed $eax killed $rax
; CHECK-NEXT: retq
%1 = srem i32 %x, -256
ret i32 %1
}
define i64 @combine_i64_srem_pow2(i64 %x) {
; CHECK-LABEL: combine_i64_srem_pow2:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: leaq 15(%rdi), %rcx
; CHECK-NEXT: testq %rdi, %rdi
; CHECK-NEXT: cmovnsq %rdi, %rcx
; CHECK-NEXT: andq $-16, %rcx
; CHECK-NEXT: subq %rcx, %rax
; CHECK-NEXT: retq
%1 = srem i64 %x, 16
ret i64 %1
}
define i64 @combine_i64_srem_negpow2(i64 %x) {
; CHECK-LABEL: combine_i64_srem_negpow2:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: leaq 255(%rdi), %rcx
; CHECK-NEXT: testq %rdi, %rdi
; CHECK-NEXT: cmovnsq %rdi, %rcx
; CHECK-NEXT: andq $-256, %rcx
; CHECK-NEXT: subq %rcx, %rax
; CHECK-NEXT: retq
%1 = srem i64 %x, -256
ret i64 %1
}
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