xref: /llvm-project/llvm/test/CodeGen/X86/ssub_sat.ll (revision 7b3bbd83c0c24087072ec5b22a76799ab31f87d5) 
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc < %s -mtriple=i686 -mattr=cmov | FileCheck %s --check-prefix=X86
3; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s --check-prefix=X64
4
5declare i4 @llvm.ssub.sat.i4(i4, i4)
6declare i8 @llvm.ssub.sat.i8(i8, i8)
7declare i16 @llvm.ssub.sat.i16(i16, i16)
8declare i32 @llvm.ssub.sat.i32(i32, i32)
9declare i64 @llvm.ssub.sat.i64(i64, i64)
10declare <4 x i32> @llvm.ssub.sat.v4i32(<4 x i32>, <4 x i32>)
11
12define i32 @func(i32 %x, i32 %y) nounwind {
13; X86-LABEL: func:
14; X86:       # %bb.0:
15; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
16; X86-NEXT:    movl {{[0-9]+}}(%esp), %edx
17; X86-NEXT:    xorl %ecx, %ecx
18; X86-NEXT:    cmpl %edx, %eax
19; X86-NEXT:    setns %cl
20; X86-NEXT:    addl $2147483647, %ecx # imm = 0x7FFFFFFF
21; X86-NEXT:    subl %edx, %eax
22; X86-NEXT:    cmovol %ecx, %eax
23; X86-NEXT:    retl
24;
25; X64-LABEL: func:
26; X64:       # %bb.0:
27; X64-NEXT:    xorl %eax, %eax
28; X64-NEXT:    cmpl %esi, %edi
29; X64-NEXT:    setns %al
30; X64-NEXT:    addl $2147483647, %eax # imm = 0x7FFFFFFF
31; X64-NEXT:    subl %esi, %edi
32; X64-NEXT:    cmovnol %edi, %eax
33; X64-NEXT:    retq
34  %tmp = call i32 @llvm.ssub.sat.i32(i32 %x, i32 %y)
35  ret i32 %tmp
36}
37
38define i64 @func2(i64 %x, i64 %y) nounwind {
39; X86-LABEL: func2:
40; X86:       # %bb.0:
41; X86-NEXT:    pushl %ebx
42; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
43; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
44; X86-NEXT:    subl {{[0-9]+}}(%esp), %eax
45; X86-NEXT:    sbbl {{[0-9]+}}(%esp), %ecx
46; X86-NEXT:    seto %bl
47; X86-NEXT:    movl %ecx, %edx
48; X86-NEXT:    sarl $31, %edx
49; X86-NEXT:    testb %bl, %bl
50; X86-NEXT:    cmovnel %edx, %eax
51; X86-NEXT:    addl $-2147483648, %edx # imm = 0x80000000
52; X86-NEXT:    testb %bl, %bl
53; X86-NEXT:    cmovel %ecx, %edx
54; X86-NEXT:    popl %ebx
55; X86-NEXT:    retl
56;
57; X64-LABEL: func2:
58; X64:       # %bb.0:
59; X64-NEXT:    xorl %ecx, %ecx
60; X64-NEXT:    cmpq %rsi, %rdi
61; X64-NEXT:    setns %cl
62; X64-NEXT:    movabsq $9223372036854775807, %rax # imm = 0x7FFFFFFFFFFFFFFF
63; X64-NEXT:    addq %rcx, %rax
64; X64-NEXT:    subq %rsi, %rdi
65; X64-NEXT:    cmovnoq %rdi, %rax
66; X64-NEXT:    retq
67  %tmp = call i64 @llvm.ssub.sat.i64(i64 %x, i64 %y)
68  ret i64 %tmp
69}
70
71define signext i16 @func16(i16 signext %x, i16 signext %y) nounwind {
72; X86-LABEL: func16:
73; X86:       # %bb.0:
74; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
75; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %edx
76; X86-NEXT:    xorl %ecx, %ecx
77; X86-NEXT:    cmpw %dx, %ax
78; X86-NEXT:    setns %cl
79; X86-NEXT:    addl $32767, %ecx # imm = 0x7FFF
80; X86-NEXT:    subw %dx, %ax
81; X86-NEXT:    cmovol %ecx, %eax
82; X86-NEXT:    # kill: def $ax killed $ax killed $eax
83; X86-NEXT:    retl
84;
85; X64-LABEL: func16:
86; X64:       # %bb.0:
87; X64-NEXT:    xorl %eax, %eax
88; X64-NEXT:    cmpw %si, %di
89; X64-NEXT:    setns %al
90; X64-NEXT:    addl $32767, %eax # imm = 0x7FFF
91; X64-NEXT:    subw %si, %di
92; X64-NEXT:    cmovnol %edi, %eax
93; X64-NEXT:    # kill: def $ax killed $ax killed $eax
94; X64-NEXT:    retq
95  %tmp = call i16 @llvm.ssub.sat.i16(i16 %x, i16 %y)
96  ret i16 %tmp
97}
98
99define signext i8 @func8(i8 signext %x, i8 signext %y) nounwind {
100; X86-LABEL: func8:
101; X86:       # %bb.0:
102; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
103; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %edx
104; X86-NEXT:    xorl %ecx, %ecx
105; X86-NEXT:    cmpb %dl, %al
106; X86-NEXT:    setns %cl
107; X86-NEXT:    addl $127, %ecx
108; X86-NEXT:    subb %dl, %al
109; X86-NEXT:    movzbl %al, %eax
110; X86-NEXT:    cmovol %ecx, %eax
111; X86-NEXT:    # kill: def $al killed $al killed $eax
112; X86-NEXT:    retl
113;
114; X64-LABEL: func8:
115; X64:       # %bb.0:
116; X64-NEXT:    xorl %ecx, %ecx
117; X64-NEXT:    cmpb %sil, %dil
118; X64-NEXT:    setns %cl
119; X64-NEXT:    addl $127, %ecx
120; X64-NEXT:    subb %sil, %dil
121; X64-NEXT:    movzbl %dil, %eax
122; X64-NEXT:    cmovol %ecx, %eax
123; X64-NEXT:    # kill: def $al killed $al killed $eax
124; X64-NEXT:    retq
125  %tmp = call i8 @llvm.ssub.sat.i8(i8 %x, i8 %y)
126  ret i8 %tmp
127}
128
129define signext i4 @func3(i4 signext %x, i4 signext %y) nounwind {
130; X86-LABEL: func3:
131; X86:       # %bb.0:
132; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
133; X86-NEXT:    subb {{[0-9]+}}(%esp), %al
134; X86-NEXT:    movzbl %al, %ecx
135; X86-NEXT:    cmpb $7, %al
136; X86-NEXT:    movl $7, %eax
137; X86-NEXT:    cmovll %ecx, %eax
138; X86-NEXT:    cmpb $-7, %al
139; X86-NEXT:    movl $248, %ecx
140; X86-NEXT:    cmovgel %eax, %ecx
141; X86-NEXT:    movsbl %cl, %eax
142; X86-NEXT:    retl
143;
144; X64-LABEL: func3:
145; X64:       # %bb.0:
146; X64-NEXT:    subb %sil, %dil
147; X64-NEXT:    movzbl %dil, %eax
148; X64-NEXT:    cmpb $7, %al
149; X64-NEXT:    movl $7, %ecx
150; X64-NEXT:    cmovll %eax, %ecx
151; X64-NEXT:    cmpb $-7, %cl
152; X64-NEXT:    movl $248, %eax
153; X64-NEXT:    cmovgel %ecx, %eax
154; X64-NEXT:    movsbl %al, %eax
155; X64-NEXT:    retq
156  %tmp = call i4 @llvm.ssub.sat.i4(i4 %x, i4 %y)
157  ret i4 %tmp
158}
159
160define <4 x i32> @vec(<4 x i32> %x, <4 x i32> %y) nounwind {
161; X86-LABEL: vec:
162; X86:       # %bb.0:
163; X86-NEXT:    pushl %ebx
164; X86-NEXT:    pushl %edi
165; X86-NEXT:    pushl %esi
166; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
167; X86-NEXT:    movl {{[0-9]+}}(%esp), %edx
168; X86-NEXT:    xorl %eax, %eax
169; X86-NEXT:    cmpl %edx, %ecx
170; X86-NEXT:    setns %al
171; X86-NEXT:    addl $2147483647, %eax # imm = 0x7FFFFFFF
172; X86-NEXT:    subl %edx, %ecx
173; X86-NEXT:    movl {{[0-9]+}}(%esp), %edx
174; X86-NEXT:    cmovol %eax, %ecx
175; X86-NEXT:    movl {{[0-9]+}}(%esp), %esi
176; X86-NEXT:    xorl %eax, %eax
177; X86-NEXT:    cmpl %esi, %edx
178; X86-NEXT:    setns %al
179; X86-NEXT:    addl $2147483647, %eax # imm = 0x7FFFFFFF
180; X86-NEXT:    subl %esi, %edx
181; X86-NEXT:    movl {{[0-9]+}}(%esp), %esi
182; X86-NEXT:    cmovol %eax, %edx
183; X86-NEXT:    movl {{[0-9]+}}(%esp), %edi
184; X86-NEXT:    xorl %eax, %eax
185; X86-NEXT:    cmpl %edi, %esi
186; X86-NEXT:    setns %al
187; X86-NEXT:    addl $2147483647, %eax # imm = 0x7FFFFFFF
188; X86-NEXT:    subl %edi, %esi
189; X86-NEXT:    movl {{[0-9]+}}(%esp), %edi
190; X86-NEXT:    cmovol %eax, %esi
191; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
192; X86-NEXT:    xorl %ebx, %ebx
193; X86-NEXT:    cmpl %eax, %edi
194; X86-NEXT:    setns %bl
195; X86-NEXT:    addl $2147483647, %ebx # imm = 0x7FFFFFFF
196; X86-NEXT:    subl %eax, %edi
197; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
198; X86-NEXT:    cmovol %ebx, %edi
199; X86-NEXT:    movl %ecx, 12(%eax)
200; X86-NEXT:    movl %edx, 8(%eax)
201; X86-NEXT:    movl %esi, 4(%eax)
202; X86-NEXT:    movl %edi, (%eax)
203; X86-NEXT:    popl %esi
204; X86-NEXT:    popl %edi
205; X86-NEXT:    popl %ebx
206; X86-NEXT:    retl $4
207;
208; X64-LABEL: vec:
209; X64:       # %bb.0:
210; X64-NEXT:    pxor %xmm2, %xmm2
211; X64-NEXT:    movdqa %xmm0, %xmm3
212; X64-NEXT:    psubd %xmm1, %xmm3
213; X64-NEXT:    pcmpgtd %xmm2, %xmm1
214; X64-NEXT:    pcmpgtd %xmm3, %xmm0
215; X64-NEXT:    pxor %xmm1, %xmm0
216; X64-NEXT:    movdqa %xmm0, %xmm1
217; X64-NEXT:    pandn %xmm3, %xmm1
218; X64-NEXT:    psrad $31, %xmm3
219; X64-NEXT:    pxor {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm3
220; X64-NEXT:    pand %xmm3, %xmm0
221; X64-NEXT:    por %xmm1, %xmm0
222; X64-NEXT:    retq
223  %tmp = call <4 x i32> @llvm.ssub.sat.v4i32(<4 x i32> %x, <4 x i32> %y)
224  ret <4 x i32> %tmp
225}
226