523 lines
17 KiB
LLVM
523 lines
17 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i686-unknown | FileCheck %s --check-prefix=X86
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; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s --check-prefix=X64
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; These tests just check that the plumbing is in place for @llvm.bitreverse. The
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; actual output is massive at the moment as llvm.bitreverse is not yet legal.
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declare <2 x i16> @llvm.bitreverse.v2i16(<2 x i16>) readnone
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define <2 x i16> @test_bitreverse_v2i16(<2 x i16> %a) nounwind {
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; X86-LABEL: test_bitreverse_v2i16:
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; X86: # BB#0:
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; X86-NEXT: movw {{[0-9]+}}(%esp), %cx
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; X86-NEXT: movw {{[0-9]+}}(%esp), %ax
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; X86-NEXT: rolw $8, %ax
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; X86-NEXT: movl %eax, %edx
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; X86-NEXT: andl $3855, %edx # imm = 0xF0F
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; X86-NEXT: shll $4, %edx
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; X86-NEXT: andl $61680, %eax # imm = 0xF0F0
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; X86-NEXT: shrl $4, %eax
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; X86-NEXT: orl %edx, %eax
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; X86-NEXT: movl %eax, %edx
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; X86-NEXT: andl $13107, %edx # imm = 0x3333
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; X86-NEXT: andl $52428, %eax # imm = 0xCCCC
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; X86-NEXT: shrl $2, %eax
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; X86-NEXT: leal (%eax,%edx,4), %eax
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; X86-NEXT: movl %eax, %edx
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; X86-NEXT: andl $21845, %edx # imm = 0x5555
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; X86-NEXT: andl $43690, %eax # imm = 0xAAAA
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; X86-NEXT: shrl %eax
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; X86-NEXT: leal (%eax,%edx,2), %eax
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; X86-NEXT: rolw $8, %cx
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; X86-NEXT: movl %ecx, %edx
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; X86-NEXT: andl $3855, %edx # imm = 0xF0F
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; X86-NEXT: shll $4, %edx
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; X86-NEXT: andl $61680, %ecx # imm = 0xF0F0
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; X86-NEXT: shrl $4, %ecx
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; X86-NEXT: orl %edx, %ecx
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; X86-NEXT: movl %ecx, %edx
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; X86-NEXT: andl $13107, %edx # imm = 0x3333
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; X86-NEXT: andl $52428, %ecx # imm = 0xCCCC
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; X86-NEXT: shrl $2, %ecx
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; X86-NEXT: leal (%ecx,%edx,4), %ecx
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; X86-NEXT: movl %ecx, %edx
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; X86-NEXT: andl $21845, %edx # imm = 0x5555
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; X86-NEXT: andl $43690, %ecx # imm = 0xAAAA
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; X86-NEXT: shrl %ecx
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; X86-NEXT: leal (%ecx,%edx,2), %edx
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; X86-NEXT: # kill: %AX<def> %AX<kill> %EAX<kill>
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; X86-NEXT: # kill: %DX<def> %DX<kill> %EDX<kill>
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; X86-NEXT: retl
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;
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; X64-LABEL: test_bitreverse_v2i16:
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; X64: # BB#0:
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; X64-NEXT: pxor %xmm1, %xmm1
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; X64-NEXT: movdqa %xmm0, %xmm2
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; X64-NEXT: punpckhbw {{.*#+}} xmm2 = xmm2[8],xmm1[8],xmm2[9],xmm1[9],xmm2[10],xmm1[10],xmm2[11],xmm1[11],xmm2[12],xmm1[12],xmm2[13],xmm1[13],xmm2[14],xmm1[14],xmm2[15],xmm1[15]
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; X64-NEXT: pshufd {{.*#+}} xmm2 = xmm2[2,3,0,1]
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; X64-NEXT: pshuflw {{.*#+}} xmm2 = xmm2[3,2,1,0,4,5,6,7]
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; X64-NEXT: pshufhw {{.*#+}} xmm2 = xmm2[0,1,2,3,7,6,5,4]
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; X64-NEXT: punpcklbw {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1],xmm0[2],xmm1[2],xmm0[3],xmm1[3],xmm0[4],xmm1[4],xmm0[5],xmm1[5],xmm0[6],xmm1[6],xmm0[7],xmm1[7]
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; X64-NEXT: pshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
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; X64-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[3,2,1,0,4,5,6,7]
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; X64-NEXT: pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,7,6,5,4]
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; X64-NEXT: packuswb %xmm2, %xmm0
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; X64-NEXT: movdqa {{.*#+}} xmm1 = [15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15]
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; X64-NEXT: movdqa %xmm0, %xmm2
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; X64-NEXT: pand %xmm1, %xmm2
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; X64-NEXT: psllw $4, %xmm2
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; X64-NEXT: movdqa {{.*#+}} xmm3 = [240,240,240,240,240,240,240,240,240,240,240,240,240,240,240,240]
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; X64-NEXT: pand %xmm3, %xmm2
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; X64-NEXT: pand %xmm3, %xmm0
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; X64-NEXT: psrlw $4, %xmm0
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; X64-NEXT: pand %xmm1, %xmm0
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; X64-NEXT: por %xmm2, %xmm0
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; X64-NEXT: movdqa {{.*#+}} xmm1 = [51,51,51,51,51,51,51,51,51,51,51,51,51,51,51,51]
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; X64-NEXT: pand %xmm0, %xmm1
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; X64-NEXT: psllw $2, %xmm1
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; X64-NEXT: pand {{.*}}(%rip), %xmm1
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; X64-NEXT: pand {{.*}}(%rip), %xmm0
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; X64-NEXT: psrlw $2, %xmm0
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; X64-NEXT: pand {{.*}}(%rip), %xmm0
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; X64-NEXT: por %xmm1, %xmm0
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; X64-NEXT: movdqa {{.*#+}} xmm1 = [85,85,85,85,85,85,85,85,85,85,85,85,85,85,85,85]
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; X64-NEXT: pand %xmm0, %xmm1
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; X64-NEXT: paddb %xmm1, %xmm1
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; X64-NEXT: pand {{.*}}(%rip), %xmm0
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; X64-NEXT: psrlw $1, %xmm0
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; X64-NEXT: pand {{.*}}(%rip), %xmm0
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; X64-NEXT: por %xmm1, %xmm0
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; X64-NEXT: psrlq $48, %xmm0
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; X64-NEXT: retq
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%b = call <2 x i16> @llvm.bitreverse.v2i16(<2 x i16> %a)
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ret <2 x i16> %b
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}
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declare i64 @llvm.bitreverse.i64(i64) readnone
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define i64 @test_bitreverse_i64(i64 %a) nounwind {
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; X86-LABEL: test_bitreverse_i64:
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; X86: # BB#0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: bswapl %eax
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; X86-NEXT: movl %eax, %edx
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; X86-NEXT: andl $252645135, %edx # imm = 0xF0F0F0F
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; X86-NEXT: shll $4, %edx
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; X86-NEXT: andl $-252645136, %eax # imm = 0xF0F0F0F0
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; X86-NEXT: shrl $4, %eax
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; X86-NEXT: orl %edx, %eax
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; X86-NEXT: movl %eax, %edx
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; X86-NEXT: andl $858993459, %edx # imm = 0x33333333
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; X86-NEXT: andl $-858993460, %eax # imm = 0xCCCCCCCC
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; X86-NEXT: shrl $2, %eax
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; X86-NEXT: leal (%eax,%edx,4), %eax
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; X86-NEXT: movl %eax, %edx
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; X86-NEXT: andl $1431655765, %edx # imm = 0x55555555
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; X86-NEXT: andl $-1431655766, %eax # imm = 0xAAAAAAAA
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; X86-NEXT: shrl %eax
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; X86-NEXT: leal (%eax,%edx,2), %eax
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; X86-NEXT: bswapl %ecx
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; X86-NEXT: movl %ecx, %edx
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; X86-NEXT: andl $252645135, %edx # imm = 0xF0F0F0F
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; X86-NEXT: shll $4, %edx
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; X86-NEXT: andl $-252645136, %ecx # imm = 0xF0F0F0F0
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; X86-NEXT: shrl $4, %ecx
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; X86-NEXT: orl %edx, %ecx
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; X86-NEXT: movl %ecx, %edx
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; X86-NEXT: andl $858993459, %edx # imm = 0x33333333
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; X86-NEXT: andl $-858993460, %ecx # imm = 0xCCCCCCCC
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; X86-NEXT: shrl $2, %ecx
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; X86-NEXT: leal (%ecx,%edx,4), %ecx
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; X86-NEXT: movl %ecx, %edx
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; X86-NEXT: andl $1431655765, %edx # imm = 0x55555555
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; X86-NEXT: andl $-1431655766, %ecx # imm = 0xAAAAAAAA
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; X86-NEXT: shrl %ecx
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; X86-NEXT: leal (%ecx,%edx,2), %edx
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; X86-NEXT: retl
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;
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; X64-LABEL: test_bitreverse_i64:
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; X64: # BB#0:
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; X64-NEXT: bswapq %rdi
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; X64-NEXT: movabsq $1085102592571150095, %rax # imm = 0xF0F0F0F0F0F0F0F
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; X64-NEXT: andq %rdi, %rax
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; X64-NEXT: shlq $4, %rax
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; X64-NEXT: movabsq $-1085102592571150096, %rcx # imm = 0xF0F0F0F0F0F0F0F0
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; X64-NEXT: andq %rdi, %rcx
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; X64-NEXT: shrq $4, %rcx
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; X64-NEXT: orq %rax, %rcx
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; X64-NEXT: movabsq $3689348814741910323, %rax # imm = 0x3333333333333333
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; X64-NEXT: andq %rcx, %rax
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; X64-NEXT: movabsq $-3689348814741910324, %rdx # imm = 0xCCCCCCCCCCCCCCCC
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; X64-NEXT: andq %rcx, %rdx
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; X64-NEXT: shrq $2, %rdx
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; X64-NEXT: leaq (%rdx,%rax,4), %rax
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; X64-NEXT: movabsq $6148914691236517205, %rcx # imm = 0x5555555555555555
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; X64-NEXT: andq %rax, %rcx
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; X64-NEXT: movabsq $-6148914691236517206, %rdx # imm = 0xAAAAAAAAAAAAAAAA
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; X64-NEXT: andq %rax, %rdx
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; X64-NEXT: shrq %rdx
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; X64-NEXT: leaq (%rdx,%rcx,2), %rax
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; X64-NEXT: retq
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%b = call i64 @llvm.bitreverse.i64(i64 %a)
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ret i64 %b
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}
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declare i32 @llvm.bitreverse.i32(i32) readnone
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define i32 @test_bitreverse_i32(i32 %a) nounwind {
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; X86-LABEL: test_bitreverse_i32:
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; X86: # BB#0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: bswapl %eax
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; X86-NEXT: movl %eax, %ecx
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; X86-NEXT: andl $252645135, %ecx # imm = 0xF0F0F0F
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; X86-NEXT: shll $4, %ecx
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; X86-NEXT: andl $-252645136, %eax # imm = 0xF0F0F0F0
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; X86-NEXT: shrl $4, %eax
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; X86-NEXT: orl %ecx, %eax
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; X86-NEXT: movl %eax, %ecx
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; X86-NEXT: andl $858993459, %ecx # imm = 0x33333333
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; X86-NEXT: andl $-858993460, %eax # imm = 0xCCCCCCCC
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; X86-NEXT: shrl $2, %eax
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; X86-NEXT: leal (%eax,%ecx,4), %eax
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; X86-NEXT: movl %eax, %ecx
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; X86-NEXT: andl $1431655765, %ecx # imm = 0x55555555
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; X86-NEXT: andl $-1431655766, %eax # imm = 0xAAAAAAAA
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; X86-NEXT: shrl %eax
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; X86-NEXT: leal (%eax,%ecx,2), %eax
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; X86-NEXT: retl
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;
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; X64-LABEL: test_bitreverse_i32:
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; X64: # BB#0:
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; X64-NEXT: # kill: %EDI<def> %EDI<kill> %RDI<def>
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; X64-NEXT: bswapl %edi
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: andl $252645135, %eax # imm = 0xF0F0F0F
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; X64-NEXT: shll $4, %eax
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; X64-NEXT: andl $-252645136, %edi # imm = 0xF0F0F0F0
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; X64-NEXT: shrl $4, %edi
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; X64-NEXT: orl %eax, %edi
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: andl $858993459, %eax # imm = 0x33333333
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; X64-NEXT: andl $-858993460, %edi # imm = 0xCCCCCCCC
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; X64-NEXT: shrl $2, %edi
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; X64-NEXT: leal (%rdi,%rax,4), %eax
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; X64-NEXT: movl %eax, %ecx
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; X64-NEXT: andl $1431655765, %ecx # imm = 0x55555555
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; X64-NEXT: andl $-1431655766, %eax # imm = 0xAAAAAAAA
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; X64-NEXT: shrl %eax
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; X64-NEXT: leal (%rax,%rcx,2), %eax
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; X64-NEXT: retq
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%b = call i32 @llvm.bitreverse.i32(i32 %a)
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ret i32 %b
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}
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declare i24 @llvm.bitreverse.i24(i24) readnone
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define i24 @test_bitreverse_i24(i24 %a) nounwind {
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; X86-LABEL: test_bitreverse_i24:
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; X86: # BB#0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: bswapl %eax
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; X86-NEXT: movl %eax, %ecx
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; X86-NEXT: andl $252645135, %ecx # imm = 0xF0F0F0F
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; X86-NEXT: shll $4, %ecx
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; X86-NEXT: andl $-252645136, %eax # imm = 0xF0F0F0F0
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; X86-NEXT: shrl $4, %eax
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; X86-NEXT: orl %ecx, %eax
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; X86-NEXT: movl %eax, %ecx
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; X86-NEXT: andl $858993459, %ecx # imm = 0x33333333
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; X86-NEXT: andl $-858993460, %eax # imm = 0xCCCCCCCC
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; X86-NEXT: shrl $2, %eax
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; X86-NEXT: leal (%eax,%ecx,4), %eax
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; X86-NEXT: movl %eax, %ecx
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; X86-NEXT: andl $1431655680, %ecx # imm = 0x55555500
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; X86-NEXT: andl $-1431655936, %eax # imm = 0xAAAAAA00
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; X86-NEXT: shrl %eax
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; X86-NEXT: leal (%eax,%ecx,2), %eax
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; X86-NEXT: shrl $8, %eax
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; X86-NEXT: retl
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;
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; X64-LABEL: test_bitreverse_i24:
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; X64: # BB#0:
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; X64-NEXT: # kill: %EDI<def> %EDI<kill> %RDI<def>
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; X64-NEXT: bswapl %edi
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: andl $252645135, %eax # imm = 0xF0F0F0F
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; X64-NEXT: shll $4, %eax
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; X64-NEXT: andl $-252645136, %edi # imm = 0xF0F0F0F0
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; X64-NEXT: shrl $4, %edi
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; X64-NEXT: orl %eax, %edi
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: andl $858993459, %eax # imm = 0x33333333
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; X64-NEXT: andl $-858993460, %edi # imm = 0xCCCCCCCC
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; X64-NEXT: shrl $2, %edi
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; X64-NEXT: leal (%rdi,%rax,4), %eax
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; X64-NEXT: movl %eax, %ecx
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; X64-NEXT: andl $1431655680, %ecx # imm = 0x55555500
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; X64-NEXT: andl $-1431655936, %eax # imm = 0xAAAAAA00
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; X64-NEXT: shrl %eax
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; X64-NEXT: leal (%rax,%rcx,2), %eax
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; X64-NEXT: shrl $8, %eax
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; X64-NEXT: retq
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%b = call i24 @llvm.bitreverse.i24(i24 %a)
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ret i24 %b
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}
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declare i16 @llvm.bitreverse.i16(i16) readnone
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define i16 @test_bitreverse_i16(i16 %a) nounwind {
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; X86-LABEL: test_bitreverse_i16:
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; X86: # BB#0:
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; X86-NEXT: movw {{[0-9]+}}(%esp), %ax
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; X86-NEXT: rolw $8, %ax
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; X86-NEXT: movl %eax, %ecx
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; X86-NEXT: andl $3855, %ecx # imm = 0xF0F
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; X86-NEXT: shll $4, %ecx
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; X86-NEXT: andl $61680, %eax # imm = 0xF0F0
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; X86-NEXT: shrl $4, %eax
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; X86-NEXT: orl %ecx, %eax
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; X86-NEXT: movl %eax, %ecx
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; X86-NEXT: andl $13107, %ecx # imm = 0x3333
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; X86-NEXT: andl $52428, %eax # imm = 0xCCCC
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; X86-NEXT: shrl $2, %eax
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; X86-NEXT: leal (%eax,%ecx,4), %eax
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; X86-NEXT: movl %eax, %ecx
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; X86-NEXT: andl $21845, %ecx # imm = 0x5555
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; X86-NEXT: andl $43690, %eax # imm = 0xAAAA
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; X86-NEXT: shrl %eax
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; X86-NEXT: leal (%eax,%ecx,2), %eax
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; X86-NEXT: # kill: %AX<def> %AX<kill> %EAX<kill>
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; X86-NEXT: retl
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;
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; X64-LABEL: test_bitreverse_i16:
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; X64: # BB#0:
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; X64-NEXT: # kill: %EDI<def> %EDI<kill> %RDI<def>
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; X64-NEXT: rolw $8, %di
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: andl $3855, %eax # imm = 0xF0F
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; X64-NEXT: shll $4, %eax
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; X64-NEXT: andl $61680, %edi # imm = 0xF0F0
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; X64-NEXT: shrl $4, %edi
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; X64-NEXT: orl %eax, %edi
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: andl $13107, %eax # imm = 0x3333
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; X64-NEXT: andl $52428, %edi # imm = 0xCCCC
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; X64-NEXT: shrl $2, %edi
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; X64-NEXT: leal (%rdi,%rax,4), %eax
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; X64-NEXT: movl %eax, %ecx
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; X64-NEXT: andl $21845, %ecx # imm = 0x5555
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; X64-NEXT: andl $43690, %eax # imm = 0xAAAA
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; X64-NEXT: shrl %eax
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; X64-NEXT: leal (%rax,%rcx,2), %eax
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; X64-NEXT: # kill: %AX<def> %AX<kill> %EAX<kill>
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; X64-NEXT: retq
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%b = call i16 @llvm.bitreverse.i16(i16 %a)
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ret i16 %b
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}
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declare i8 @llvm.bitreverse.i8(i8) readnone
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define i8 @test_bitreverse_i8(i8 %a) {
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; X86-LABEL: test_bitreverse_i8:
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; X86: # BB#0:
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; X86-NEXT: movb {{[0-9]+}}(%esp), %al
|
|
; X86-NEXT: rolb $4, %al
|
|
; X86-NEXT: movl %eax, %ecx
|
|
; X86-NEXT: andb $51, %cl
|
|
; X86-NEXT: shlb $2, %cl
|
|
; X86-NEXT: andb $-52, %al
|
|
; X86-NEXT: shrb $2, %al
|
|
; X86-NEXT: orb %cl, %al
|
|
; X86-NEXT: movl %eax, %ecx
|
|
; X86-NEXT: andb $85, %cl
|
|
; X86-NEXT: addb %cl, %cl
|
|
; X86-NEXT: andb $-86, %al
|
|
; X86-NEXT: shrb %al
|
|
; X86-NEXT: orb %cl, %al
|
|
; X86-NEXT: retl
|
|
;
|
|
; X64-LABEL: test_bitreverse_i8:
|
|
; X64: # BB#0:
|
|
; X64-NEXT: rolb $4, %dil
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: andb $51, %al
|
|
; X64-NEXT: shlb $2, %al
|
|
; X64-NEXT: andb $-52, %dil
|
|
; X64-NEXT: shrb $2, %dil
|
|
; X64-NEXT: orb %al, %dil
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: andb $85, %al
|
|
; X64-NEXT: addb %al, %al
|
|
; X64-NEXT: andb $-86, %dil
|
|
; X64-NEXT: shrb %dil
|
|
; X64-NEXT: orb %al, %dil
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: retq
|
|
%b = call i8 @llvm.bitreverse.i8(i8 %a)
|
|
ret i8 %b
|
|
}
|
|
|
|
declare i4 @llvm.bitreverse.i4(i4) readnone
|
|
|
|
define i4 @test_bitreverse_i4(i4 %a) {
|
|
; X86-LABEL: test_bitreverse_i4:
|
|
; X86: # BB#0:
|
|
; X86-NEXT: movb {{[0-9]+}}(%esp), %al
|
|
; X86-NEXT: rolb $4, %al
|
|
; X86-NEXT: movl %eax, %ecx
|
|
; X86-NEXT: andb $51, %cl
|
|
; X86-NEXT: shlb $2, %cl
|
|
; X86-NEXT: andb $-52, %al
|
|
; X86-NEXT: shrb $2, %al
|
|
; X86-NEXT: orb %cl, %al
|
|
; X86-NEXT: movl %eax, %ecx
|
|
; X86-NEXT: andb $80, %cl
|
|
; X86-NEXT: addb %cl, %cl
|
|
; X86-NEXT: andb $-96, %al
|
|
; X86-NEXT: shrb %al
|
|
; X86-NEXT: orb %cl, %al
|
|
; X86-NEXT: shrb $4, %al
|
|
; X86-NEXT: retl
|
|
;
|
|
; X64-LABEL: test_bitreverse_i4:
|
|
; X64: # BB#0:
|
|
; X64-NEXT: rolb $4, %dil
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: andb $51, %al
|
|
; X64-NEXT: shlb $2, %al
|
|
; X64-NEXT: andb $-52, %dil
|
|
; X64-NEXT: shrb $2, %dil
|
|
; X64-NEXT: orb %al, %dil
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: andb $80, %al
|
|
; X64-NEXT: addb %al, %al
|
|
; X64-NEXT: andb $-96, %dil
|
|
; X64-NEXT: shrb %dil
|
|
; X64-NEXT: orb %al, %dil
|
|
; X64-NEXT: shrb $4, %dil
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: retq
|
|
%b = call i4 @llvm.bitreverse.i4(i4 %a)
|
|
ret i4 %b
|
|
}
|
|
|
|
; These tests check that bitreverse(constant) calls are folded
|
|
|
|
define <2 x i16> @fold_v2i16() {
|
|
; X86-LABEL: fold_v2i16:
|
|
; X86: # BB#0:
|
|
; X86-NEXT: movw $-4096, %ax # imm = 0xF000
|
|
; X86-NEXT: movw $240, %dx
|
|
; X86-NEXT: retl
|
|
;
|
|
; X64-LABEL: fold_v2i16:
|
|
; X64: # BB#0:
|
|
; X64-NEXT: movaps {{.*#+}} xmm0 = [61440,240]
|
|
; X64-NEXT: retq
|
|
%b = call <2 x i16> @llvm.bitreverse.v2i16(<2 x i16> <i16 15, i16 3840>)
|
|
ret <2 x i16> %b
|
|
}
|
|
|
|
define i24 @fold_i24() {
|
|
; X86-LABEL: fold_i24:
|
|
; X86: # BB#0:
|
|
; X86-NEXT: movl $2048, %eax # imm = 0x800
|
|
; X86-NEXT: retl
|
|
;
|
|
; X64-LABEL: fold_i24:
|
|
; X64: # BB#0:
|
|
; X64-NEXT: movl $2048, %eax # imm = 0x800
|
|
; X64-NEXT: retq
|
|
%b = call i24 @llvm.bitreverse.i24(i24 4096)
|
|
ret i24 %b
|
|
}
|
|
|
|
define i8 @fold_i8() {
|
|
; X86-LABEL: fold_i8:
|
|
; X86: # BB#0:
|
|
; X86-NEXT: movb $-16, %al
|
|
; X86-NEXT: retl
|
|
;
|
|
; X64-LABEL: fold_i8:
|
|
; X64: # BB#0:
|
|
; X64-NEXT: movb $-16, %al
|
|
; X64-NEXT: retq
|
|
%b = call i8 @llvm.bitreverse.i8(i8 15)
|
|
ret i8 %b
|
|
}
|
|
|
|
define i4 @fold_i4() {
|
|
; X86-LABEL: fold_i4:
|
|
; X86: # BB#0:
|
|
; X86-NEXT: movb $1, %al
|
|
; X86-NEXT: retl
|
|
;
|
|
; X64-LABEL: fold_i4:
|
|
; X64: # BB#0:
|
|
; X64-NEXT: movb $1, %al
|
|
; X64-NEXT: retq
|
|
%b = call i4 @llvm.bitreverse.i4(i4 8)
|
|
ret i4 %b
|
|
}
|
|
|
|
; These tests check that bitreverse(bitreverse()) calls are removed
|
|
|
|
define i8 @identity_i8(i8 %a) {
|
|
; X86-LABEL: identity_i8:
|
|
; X86: # BB#0:
|
|
; X86-NEXT: movb {{[0-9]+}}(%esp), %al
|
|
; X86-NEXT: retl
|
|
;
|
|
; X64-LABEL: identity_i8:
|
|
; X64: # BB#0:
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: retq
|
|
%b = call i8 @llvm.bitreverse.i8(i8 %a)
|
|
%c = call i8 @llvm.bitreverse.i8(i8 %b)
|
|
ret i8 %c
|
|
}
|
|
|
|
define <2 x i16> @identity_v2i16(<2 x i16> %a) {
|
|
; X86-LABEL: identity_v2i16:
|
|
; X86: # BB#0:
|
|
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
|
|
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %edx
|
|
; X86-NEXT: retl
|
|
;
|
|
; X64-LABEL: identity_v2i16:
|
|
; X64: # BB#0:
|
|
; X64-NEXT: retq
|
|
%b = call <2 x i16> @llvm.bitreverse.v2i16(<2 x i16> %a)
|
|
%c = call <2 x i16> @llvm.bitreverse.v2i16(<2 x i16> %b)
|
|
ret <2 x i16> %c
|
|
}
|
|
|
|
; These tests check that bitreverse(undef) calls are removed
|
|
|
|
define i8 @undef_i8() {
|
|
; X86-LABEL: undef_i8:
|
|
; X86: # BB#0:
|
|
; X86-NEXT: retl
|
|
;
|
|
; X64-LABEL: undef_i8:
|
|
; X64: # BB#0:
|
|
; X64-NEXT: retq
|
|
%b = call i8 @llvm.bitreverse.i8(i8 undef)
|
|
ret i8 %b
|
|
}
|
|
|
|
define <2 x i16> @undef_v2i16() {
|
|
; X86-LABEL: undef_v2i16:
|
|
; X86: # BB#0:
|
|
; X86-NEXT: retl
|
|
;
|
|
; X64-LABEL: undef_v2i16:
|
|
; X64: # BB#0:
|
|
; X64-NEXT: retq
|
|
%b = call <2 x i16> @llvm.bitreverse.v2i16(<2 x i16> undef)
|
|
ret <2 x i16> %b
|
|
}
|