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[X86] Add the 16 and 8-bit CRC32 instructions to the load folding tables. 

llvm-svn: 321958
This commit is contained in:
Craig Topper 2018-01-07 06:48:20 +00:00
parent 56331e2864
commit a21f551109
3 changed files with 19 additions and 9 deletions
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3
llvm/lib/Target/X86/X86InstrInfo.cpp
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@ -1217,8 +1217,11 @@ X86InstrInfo::X86InstrInfo(X86Subtarget &STI)
{ X86::CMPSDrr_Int, X86::CMPSDrm_Int, TB_NO_REVERSE },
{ X86::CMPSSrr, X86::CMPSSrm, 0 },
{ X86::CMPSSrr_Int, X86::CMPSSrm_Int, TB_NO_REVERSE },
{ X86::CRC32r32r16, X86::CRC32r32m16, 0 },
{ X86::CRC32r32r32, X86::CRC32r32m32, 0 },
{ X86::CRC32r32r8, X86::CRC32r32m8, 0 },
{ X86::CRC32r64r64, X86::CRC32r64m64, 0 },
{ X86::CRC32r64r8, X86::CRC32r64m8, 0 },
{ X86::CVTSD2SSrr_Int, X86::CVTSD2SSrm_Int, TB_NO_REVERSE },
{ X86::CVTSS2SDrr_Int, X86::CVTSS2SDrm_Int, TB_NO_REVERSE },
{ X86::DIVPDrr, X86::DIVPDrm, TB_ALIGN_16 },

6
llvm/test/CodeGen/X86/sse42-intrinsics-fast-isel.ll
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@ -354,9 +354,8 @@ declare i32 @llvm.x86.sse42.pcmpistriz128(<16 x i8>, <16 x i8>, i8) nounwind rea
define i32 @test_mm_crc32_u8(i32 %a0, i8 %a1) {
; X32-LABEL: test_mm_crc32_u8:
; X32: # %bb.0:
; X32-NEXT: movb {{[0-9]+}}(%esp), %cl
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: crc32b %cl, %eax
; X32-NEXT: crc32b {{[0-9]+}}(%esp), %eax
; X32-NEXT: retl
;
; X64-LABEL: test_mm_crc32_u8:
@ -372,9 +371,8 @@ declare i32 @llvm.x86.sse42.crc32.32.8(i32, i8) nounwind readnone
define i32 @test_mm_crc32_u16(i32 %a0, i16 %a1) {
; X32-LABEL: test_mm_crc32_u16:
; X32: # %bb.0:
; X32-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: crc32w %cx, %eax
; X32-NEXT: crc32w {{[0-9]+}}(%esp), %eax
; X32-NEXT: retl
;
; X64-LABEL: test_mm_crc32_u16:

19
llvm/test/CodeGen/X86/stack-folding-int-sse42.ll
View File

@ -62,10 +62,22 @@ define <2 x i64> @stack_fold_aeskeygenassist(<2 x i64> %a0) {
}
declare <2 x i64> @llvm.x86.aesni.aeskeygenassist(<2 x i64>, i8) nounwind readnone
;TODO stack_fold_crc32_32_8
define i32 @stack_fold_crc32_32_8(i32 %a0, i8 %a1) {
;CHECK-LABEL: stack_fold_crc32_32_8
;CHECK: crc32b {{-?[0-9]*}}(%rsp), %eax {{.*#+}} 1-byte Folded Reload
%1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = call i32 @llvm.x86.sse42.crc32.32.8(i32 %a0, i8 %a1)
ret i32 %2
}
declare i32 @llvm.x86.sse42.crc32.32.8(i32, i8) nounwind
;TODO stack_fold_crc32_32_16
define i32 @stack_fold_crc32_32_16(i32 %a0, i16 %a1) {
;CHECK-LABEL: stack_fold_crc32_32_16
;CHECK: crc32w {{-?[0-9]*}}(%rsp), %eax {{.*#+}} 2-byte Folded Reload
%1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
%2 = call i32 @llvm.x86.sse42.crc32.32.16(i32 %a0, i16 %a1)
ret i32 %2
}
declare i32 @llvm.x86.sse42.crc32.32.16(i32, i16) nounwind
define i32 @stack_fold_crc32_32_32(i32 %a0, i32 %a1) {
@ -77,9 +89,6 @@ define i32 @stack_fold_crc32_32_32(i32 %a0, i32 %a1) {
}
declare i32 @llvm.x86.sse42.crc32.32.32(i32, i32) nounwind
;TODO stack_fold_crc32_64_8
declare i64 @llvm.x86.sse42.crc32.64.8(i64, i8) nounwind
define i64 @stack_fold_crc32_64_64(i64 %a0, i64 %a1) {
;CHECK-LABEL: stack_fold_crc32_64_64
;CHECK: crc32q {{-?[0-9]*}}(%rsp), %rax {{.*#+}} 8-byte Folded Reload