usub_sat_plus.ll
4.4 KB
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686 -mattr=cmov | FileCheck %s --check-prefixes=CHECK,X86
; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s --check-prefixes=CHECK,X64
declare i4 @llvm.usub.sat.i4(i4, i4)
declare i8 @llvm.usub.sat.i8(i8, i8)
declare i16 @llvm.usub.sat.i16(i16, i16)
declare i32 @llvm.usub.sat.i32(i32, i32)
declare i64 @llvm.usub.sat.i64(i64, i64)
define i32 @func32(i32 %x, i32 %y, i32 %z) nounwind {
; X86-LABEL: func32:
; X86: # %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT: imull {{[0-9]+}}(%esp), %ecx
; X86-NEXT: xorl %edx, %edx
; X86-NEXT: subl %ecx, %eax
; X86-NEXT: cmovbl %edx, %eax
; X86-NEXT: retl
;
; X64-LABEL: func32:
; X64: # %bb.0:
; X64-NEXT: imull %edx, %esi
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: subl %esi, %edi
; X64-NEXT: cmovael %edi, %eax
; X64-NEXT: retq
%a = mul i32 %y, %z
%tmp = call i32 @llvm.usub.sat.i32(i32 %x, i32 %a)
ret i32 %tmp
}
define i64 @func64(i64 %x, i64 %y, i64 %z) nounwind {
; X86-LABEL: func64:
; X86: # %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: xorl %ecx, %ecx
; X86-NEXT: subl {{[0-9]+}}(%esp), %eax
; X86-NEXT: sbbl {{[0-9]+}}(%esp), %edx
; X86-NEXT: cmovbl %ecx, %edx
; X86-NEXT: cmovbl %ecx, %eax
; X86-NEXT: retl
;
; X64-LABEL: func64:
; X64: # %bb.0:
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: subq %rdx, %rdi
; X64-NEXT: cmovaeq %rdi, %rax
; X64-NEXT: retq
%a = mul i64 %y, %z
%tmp = call i64 @llvm.usub.sat.i64(i64 %x, i64 %z)
ret i64 %tmp
}
define zeroext i16 @func16(i16 zeroext %x, i16 zeroext %y, i16 zeroext %z) nounwind {
; X86-LABEL: func16:
; X86: # %bb.0:
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
; X86-NEXT: imulw {{[0-9]+}}(%esp), %cx
; X86-NEXT: xorl %edx, %edx
; X86-NEXT: subw %cx, %ax
; X86-NEXT: cmovbl %edx, %eax
; X86-NEXT: # kill: def $ax killed $ax killed $eax
; X86-NEXT: retl
;
; X64-LABEL: func16:
; X64: # %bb.0:
; X64-NEXT: imull %edx, %esi
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: subw %si, %di
; X64-NEXT: cmovael %edi, %eax
; X64-NEXT: # kill: def $ax killed $ax killed $eax
; X64-NEXT: retq
%a = mul i16 %y, %z
%tmp = call i16 @llvm.usub.sat.i16(i16 %x, i16 %a)
ret i16 %tmp
}
define zeroext i8 @func8(i8 zeroext %x, i8 zeroext %y, i8 zeroext %z) nounwind {
; X86-LABEL: func8:
; X86: # %bb.0:
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movb {{[0-9]+}}(%esp), %al
; X86-NEXT: mulb {{[0-9]+}}(%esp)
; X86-NEXT: xorl %edx, %edx
; X86-NEXT: subb %al, %cl
; X86-NEXT: movzbl %cl, %eax
; X86-NEXT: cmovbl %edx, %eax
; X86-NEXT: # kill: def $al killed $al killed $eax
; X86-NEXT: retl
;
; X64-LABEL: func8:
; X64: # %bb.0:
; X64-NEXT: movl %esi, %eax
; X64-NEXT: # kill: def $al killed $al killed $eax
; X64-NEXT: mulb %dl
; X64-NEXT: xorl %ecx, %ecx
; X64-NEXT: subb %al, %dil
; X64-NEXT: movzbl %dil, %eax
; X64-NEXT: cmovbl %ecx, %eax
; X64-NEXT: # kill: def $al killed $al killed $eax
; X64-NEXT: retq
%a = mul i8 %y, %z
%tmp = call i8 @llvm.usub.sat.i8(i8 %x, i8 %a)
ret i8 %tmp
}
define zeroext i4 @func4(i4 zeroext %x, i4 zeroext %y, i4 zeroext %z) nounwind {
; X86-LABEL: func4:
; X86: # %bb.0:
; X86-NEXT: pushl %ebx
; X86-NEXT: pushl %esi
; X86-NEXT: movb {{[0-9]+}}(%esp), %cl
; X86-NEXT: movb {{[0-9]+}}(%esp), %al
; X86-NEXT: mulb {{[0-9]+}}(%esp)
; X86-NEXT: movl %eax, %edx
; X86-NEXT: andb $15, %dl
; X86-NEXT: movzbl %dl, %esi
; X86-NEXT: movzbl %cl, %ebx
; X86-NEXT: cmpb %dl, %cl
; X86-NEXT: cmovbel %esi, %ebx
; X86-NEXT: subb %al, %bl
; X86-NEXT: movzbl %bl, %eax
; X86-NEXT: andl $15, %eax
; X86-NEXT: popl %esi
; X86-NEXT: popl %ebx
; X86-NEXT: retl
;
; X64-LABEL: func4:
; X64: # %bb.0:
; X64-NEXT: movl %esi, %eax
; X64-NEXT: # kill: def $al killed $al killed $eax
; X64-NEXT: mulb %dl
; X64-NEXT: movl %eax, %ecx
; X64-NEXT: andb $15, %cl
; X64-NEXT: movzbl %cl, %ecx
; X64-NEXT: cmpb %cl, %dil
; X64-NEXT: cmoval %edi, %ecx
; X64-NEXT: subb %al, %cl
; X64-NEXT: movzbl %cl, %eax
; X64-NEXT: andl $15, %eax
; X64-NEXT: retq
%a = mul i4 %y, %z
%tmp = call i4 @llvm.usub.sat.i4(i4 %x, i4 %a)
ret i4 %tmp
}