1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=x86_64-linux-gnu -o - | FileCheck %s
4 ; This test checks that only a single jae gets generated in the final code
5 ; for lowering the CMOV pseudos that get created for this IR. The tricky part
6 ; of this test is that it tests the special PHI operand rewriting code in
7 ; X86TargetLowering::EmitLoweredSelect.
9 define double @foo1(float %p1, double %p2, double %p3) nounwind {
11 ; CHECK: # %bb.0: # %entry
12 ; CHECK-NEXT: xorps %xmm3, %xmm3
13 ; CHECK-NEXT: ucomiss %xmm3, %xmm0
14 ; CHECK-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
15 ; CHECK-NEXT: jae .LBB0_1
16 ; CHECK-NEXT: # %bb.2: # %entry
17 ; CHECK-NEXT: addsd %xmm2, %xmm0
18 ; CHECK-NEXT: jmp .LBB0_3
19 ; CHECK-NEXT: .LBB0_1:
20 ; CHECK-NEXT: addsd %xmm0, %xmm1
21 ; CHECK-NEXT: movapd %xmm1, %xmm0
22 ; CHECK-NEXT: movapd %xmm1, %xmm2
23 ; CHECK-NEXT: .LBB0_3: # %entry
24 ; CHECK-NEXT: subsd %xmm1, %xmm0
25 ; CHECK-NEXT: addsd %xmm2, %xmm0
28 %c1 = fcmp oge float %p1, 0.000000e+00
29 %d0 = fadd double %p2, 1.25e0
30 %d1 = fadd double %p3, 1.25e0
31 %d2 = select i1 %c1, double %d0, double %d1
32 %d3 = select i1 %c1, double %d2, double %p2
33 %d4 = select i1 %c1, double %d3, double %p3
34 %d5 = fsub double %d2, %d3
35 %d6 = fadd double %d5, %d4
39 ; This test checks that only a single jae gets generated in the final code
40 ; for lowering the CMOV pseudos that get created for this IR. The tricky part
41 ; of this test is that it tests the special PHI operand rewriting code in
42 ; X86TargetLowering::EmitLoweredSelect.
44 define double @foo2(float %p1, double %p2, double %p3) nounwind {
46 ; CHECK: # %bb.0: # %entry
47 ; CHECK-NEXT: xorps %xmm3, %xmm3
48 ; CHECK-NEXT: ucomiss %xmm3, %xmm0
49 ; CHECK-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
50 ; CHECK-NEXT: jae .LBB1_1
51 ; CHECK-NEXT: # %bb.2: # %entry
52 ; CHECK-NEXT: addsd %xmm0, %xmm2
53 ; CHECK-NEXT: movapd %xmm2, %xmm0
54 ; CHECK-NEXT: movapd %xmm2, %xmm1
55 ; CHECK-NEXT: jmp .LBB1_3
56 ; CHECK-NEXT: .LBB1_1:
57 ; CHECK-NEXT: addsd %xmm1, %xmm0
58 ; CHECK-NEXT: .LBB1_3: # %entry
59 ; CHECK-NEXT: subsd %xmm1, %xmm0
60 ; CHECK-NEXT: addsd %xmm2, %xmm0
63 %c1 = fcmp oge float %p1, 0.000000e+00
64 %d0 = fadd double %p2, 1.25e0
65 %d1 = fadd double %p3, 1.25e0
66 %d2 = select i1 %c1, double %d0, double %d1
67 %d3 = select i1 %c1, double %p2, double %d2
68 %d4 = select i1 %c1, double %p3, double %d3
69 %d5 = fsub double %d2, %d3
70 %d6 = fadd double %d5, %d4
74 ; This test checks that only a single js gets generated in the final code
75 ; for lowering the CMOV pseudos that get created for this IR. The tricky part
76 ; of this test is that it tests the special PHI operand rewriting code in
77 ; X86TargetLowering::EmitLoweredSelect. It also tests to make sure all
78 ; the operands of the resulting instructions are from the proper places.
80 define double @foo3(i32 %p1, double %p2, double %p3,
82 ; CHECK: # %bb.0: # %entry
83 ; CHECK-NEXT: testl %edi, %edi
84 ; CHECK-NEXT: js .LBB2_2
85 ; CHECK-NEXT: # %bb.1: # %entry
86 ; CHECK-NEXT: movapd %xmm2, %xmm1
87 ; CHECK-NEXT: movapd %xmm2, %xmm0
88 ; CHECK-NEXT: .LBB2_2: # %entry
89 ; CHECK-NEXT: divsd %xmm1, %xmm0
91 double %p4, double %p5) nounwind {
93 %c1 = icmp slt i32 %p1, 0
94 %d2 = select i1 %c1, double %p2, double %p3
95 %d3 = select i1 %c1, double %p3, double %p4
96 %d4 = select i1 %c1, double %d2, double %d3
97 %d5 = fdiv double %d4, %d3
101 ; This test checks that only a single js gets generated in the final code
102 ; for lowering the CMOV pseudos that get created for this IR. The tricky part
103 ; of this test is that it tests the special PHI operand rewriting code in
104 ; X86TargetLowering::EmitLoweredSelect. It also tests to make sure all
105 ; the operands of the resulting instructions are from the proper places
106 ; when the "opposite condition" handling code in the compiler is used.
107 ; This should be the same code as foo3 above, because we use the opposite
108 ; condition code in the second two selects, but we also swap the operands
109 ; of the selects to give the same actual computation.
111 define double @foo4(i32 %p1, double %p2, double %p3,
113 ; CHECK: # %bb.0: # %entry
114 ; CHECK-NEXT: testl %edi, %edi
115 ; CHECK-NEXT: js .LBB3_2
116 ; CHECK-NEXT: # %bb.1: # %entry
117 ; CHECK-NEXT: movapd %xmm2, %xmm1
118 ; CHECK-NEXT: movapd %xmm2, %xmm0
119 ; CHECK-NEXT: .LBB3_2: # %entry
120 ; CHECK-NEXT: divsd %xmm1, %xmm0
122 double %p4, double %p5) nounwind {
124 %c1 = icmp slt i32 %p1, 0
125 %d2 = select i1 %c1, double %p2, double %p3
126 %c2 = icmp sge i32 %p1, 0
127 %d3 = select i1 %c2, double %p4, double %p3
128 %d4 = select i1 %c2, double %d3, double %d2
129 %d5 = fdiv double %d4, %d3
133 ; This test checks that only a single jae gets generated in the final code
134 ; for lowering the CMOV pseudos that get created for this IR. The tricky part
135 ; of this test is that it tests the special code in CodeGenPrepare.
137 define double @foo5(float %p1, double %p2, double %p3) nounwind {
139 ; CHECK: # %bb.0: # %entry
140 ; CHECK-NEXT: xorps %xmm3, %xmm3
141 ; CHECK-NEXT: ucomiss %xmm3, %xmm0
142 ; CHECK-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
143 ; CHECK-NEXT: jae .LBB4_1
144 ; CHECK-NEXT: # %bb.2: # %select.false
145 ; CHECK-NEXT: addsd %xmm2, %xmm0
146 ; CHECK-NEXT: .LBB4_3: # %select.end
147 ; CHECK-NEXT: subsd %xmm1, %xmm0
148 ; CHECK-NEXT: addsd %xmm2, %xmm0
150 ; CHECK-NEXT: .LBB4_1:
151 ; CHECK-NEXT: addsd %xmm0, %xmm1
152 ; CHECK-NEXT: movapd %xmm1, %xmm0
153 ; CHECK-NEXT: movapd %xmm1, %xmm2
154 ; CHECK-NEXT: jmp .LBB4_3
156 %c1 = fcmp oge float %p1, 0.000000e+00
157 %d0 = fadd double %p2, 1.25e0
158 %d1 = fadd double %p3, 1.25e0
159 %d2 = select i1 %c1, double %d0, double %d1, !prof !0
160 %d3 = select i1 %c1, double %d2, double %p2, !prof !0
161 %d4 = select i1 %c1, double %d3, double %p3, !prof !0
162 %d5 = fsub double %d2, %d3
163 %d6 = fadd double %d5, %d4
167 ; We should expand select instructions into 3 conditional branches as their
168 ; condtions are different.
170 define double @foo6(float %p1, double %p2, double %p3) nounwind {
172 ; CHECK: # %bb.0: # %entry
173 ; CHECK-NEXT: movaps %xmm0, %xmm3
174 ; CHECK-NEXT: xorps %xmm0, %xmm0
175 ; CHECK-NEXT: ucomiss %xmm0, %xmm3
176 ; CHECK-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
177 ; CHECK-NEXT: jae .LBB5_1
178 ; CHECK-NEXT: # %bb.2: # %select.false
179 ; CHECK-NEXT: addsd %xmm2, %xmm0
180 ; CHECK-NEXT: .LBB5_3: # %select.end
181 ; CHECK-NEXT: ucomiss {{.*}}(%rip), %xmm3
182 ; CHECK-NEXT: movapd %xmm0, %xmm4
183 ; CHECK-NEXT: jae .LBB5_5
184 ; CHECK-NEXT: # %bb.4: # %select.false2
185 ; CHECK-NEXT: movapd %xmm1, %xmm4
186 ; CHECK-NEXT: .LBB5_5: # %select.end1
187 ; CHECK-NEXT: ucomiss {{.*}}(%rip), %xmm3
188 ; CHECK-NEXT: movapd %xmm4, %xmm1
189 ; CHECK-NEXT: jae .LBB5_7
190 ; CHECK-NEXT: # %bb.6: # %select.false4
191 ; CHECK-NEXT: movapd %xmm2, %xmm1
192 ; CHECK-NEXT: .LBB5_7: # %select.end3
193 ; CHECK-NEXT: subsd %xmm4, %xmm0
194 ; CHECK-NEXT: addsd %xmm1, %xmm0
196 ; CHECK-NEXT: .LBB5_1:
197 ; CHECK-NEXT: addsd %xmm1, %xmm0
198 ; CHECK-NEXT: jmp .LBB5_3
200 %c1 = fcmp oge float %p1, 0.000000e+00
201 %c2 = fcmp oge float %p1, 1.000000e+00
202 %c3 = fcmp oge float %p1, 2.000000e+00
203 %d0 = fadd double %p2, 1.25e0
204 %d1 = fadd double %p3, 1.25e0
205 %d2 = select i1 %c1, double %d0, double %d1, !prof !0
206 %d3 = select i1 %c2, double %d2, double %p2, !prof !0
207 %d4 = select i1 %c3, double %d3, double %p3, !prof !0
208 %d5 = fsub double %d2, %d3
209 %d6 = fadd double %d5, %d4
213 declare void @llvm.dbg.value(metadata, metadata, metadata)
215 ; Like the test for @foo1, but check that the inserted dbg.value does not
216 ; affect codegen. The CHECK items below should always be identical to @foo1,
217 ; minus the DEBUG_VALUE line and changes in labels..
218 define double @foo1_g(float %p1, double %p2, double %p3) nounwind !dbg !4 {
219 ; CHECK-LABEL: foo1_g:
220 ; CHECK: # %bb.0: # %entry
221 ; CHECK-NEXT: xorps %xmm3, %xmm3
222 ; CHECK-NEXT: ucomiss %xmm3, %xmm0
223 ; CHECK-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
224 ; CHECK-NEXT: jae .LBB6_1
225 ; CHECK-NEXT: # %bb.2: # %entry
226 ; CHECK-NEXT: addsd %xmm2, %xmm0
227 ; CHECK-NEXT: jmp .LBB6_3
228 ; CHECK-NEXT: .LBB6_1:
229 ; CHECK-NEXT: addsd %xmm0, %xmm1
230 ; CHECK-NEXT: movapd %xmm1, %xmm0
231 ; CHECK-NEXT: movapd %xmm1, %xmm2
232 ; CHECK-NEXT: .LBB6_3: # %entry
233 ; CHECK-NEXT: #DEBUG_VALUE: foobar:xyzzy <- undef
234 ; CHECK-NEXT: subsd %xmm1, %xmm0
235 ; CHECK-NEXT: addsd %xmm2, %xmm0
238 %c1 = fcmp oge float %p1, 0.000000e+00
239 %d0 = fadd double %p2, 1.25e0
240 %d1 = fadd double %p3, 1.25e0
241 %d2 = select i1 %c1, double %d0, double %d1
242 call void @llvm.dbg.value(metadata float undef, metadata !5, metadata !DIExpression()), !dbg !6
243 %d3 = select i1 %c1, double %d2, double %p2
244 %d4 = select i1 %c1, double %d3, double %p3
245 %d5 = fsub double %d2, %d3
246 %d6 = fadd double %d5, %d4
250 !llvm.module.flags = !{!1}
253 !0 = !{!"branch_weights", i32 1, i32 2000}
254 !1 = !{i32 2, !"Debug Info Version", i32 3}
255 !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, nameTableKind: None)
256 !3 = !DIFile(filename: "test.c", directory: ".")
257 !4 = distinct !DISubprogram(name: "foobar", scope: !2, file: !3, line: 1, type: !9, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !8)
258 !5 = !DILocalVariable(name: "xyzzy", scope: !4, file: !3, line: 2, type: !7)
259 !6 = !DILocation(line: 1, column: 1, scope: !4)
260 !7 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
262 !9 = !DISubroutineType(types: !10)