xref: /llvm-project/llvm/test/CodeGen/SPIRV/structurizer/cf.do.break.ll (revision cba70550ccf55c6ad3daa621bb8caf3c4ca6cbd7) 
1; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-vulkan-compute %s -o - -filetype=obj | spirv-val %}
2
3; int foo() { return true; }
4;
5; int process() {
6;   int val = 0;
7;   int i = 0;
8;
9;   do {
10;     ++i;
11;     if (i > 5) {
12;       break;
13;       break;       // No SPIR-V should be emitted for this statement.
14;       val = i;     // No SPIR-V should be emitted for this statement.
15;       while(true); // No SPIR-V should be emitted for this statement.
16;     }
17;
18;     val = i;
19;     {
20;       {
21;         break;
22;       }
23;     }
24;     val = val * 2; // No SPIR-V should be emitted for this statement.
25;
26;   } while (i < 10);
27;
28;   ////////////////////////////////////////////////////////////////////////////////
29;   // Nested do-while loops with break statements                                //
30;   // Each break statement should branch to the corresponding loop's break block //
31;   ////////////////////////////////////////////////////////////////////////////////
32;
33;   do {
34;     ++i;
35;
36;     do {
37;       ++val;
38;       break;
39;     } while (i < 10);
40;
41;     --i;
42;
43;     {
44;       break;
45;     }
46;
47;   } while(val < 10);
48;
49;   return val;
50; }
51;
52; [numthreads(1, 1, 1)]
53; void main() {
54;   process();
55; }
56
57target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1"
58target triple = "spirv-unknown-vulkan1.3-compute"
59
60; Function Attrs: convergent noinline nounwind optnone
61define spir_func noundef i32 @_Z3foov() #0 {
62entry:
63  %0 = call token @llvm.experimental.convergence.entry()
64  ret i32 1
65}
66
67; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)
68declare token @llvm.experimental.convergence.entry() #1
69
70; Function Attrs: convergent noinline nounwind optnone
71define spir_func noundef i32 @_Z7processv() #0 {
72entry:
73  %0 = call token @llvm.experimental.convergence.entry()
74  %val = alloca i32, align 4
75  %i = alloca i32, align 4
76  store i32 0, ptr %val, align 4
77  store i32 0, ptr %i, align 4
78  br label %do.body
79
80do.body:                                          ; preds = %do.cond, %entry
81  %1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]
82  %2 = load i32, ptr %i, align 4
83  %inc = add nsw i32 %2, 1
84  store i32 %inc, ptr %i, align 4
85  %3 = load i32, ptr %i, align 4
86  %cmp = icmp sgt i32 %3, 5
87  br i1 %cmp, label %if.then, label %if.end
88
89if.then:                                          ; preds = %do.body
90  br label %do.end
91
92if.end:                                           ; preds = %do.body
93  %4 = load i32, ptr %i, align 4
94  store i32 %4, ptr %val, align 4
95  br label %do.end
96
97do.cond:                                          ; No predecessors!
98  %5 = load i32, ptr %i, align 4
99  %cmp1 = icmp slt i32 %5, 10
100  br i1 %cmp1, label %do.body, label %do.end
101
102do.end:                                           ; preds = %do.cond, %if.end, %if.then
103  br label %do.body2
104
105do.body2:                                         ; preds = %do.cond9, %do.end
106  %6 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]
107  %7 = load i32, ptr %i, align 4
108  %inc3 = add nsw i32 %7, 1
109  store i32 %inc3, ptr %i, align 4
110  br label %do.body4
111
112do.body4:                                         ; preds = %do.cond6, %do.body2
113  %8 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %6) ]
114  %9 = load i32, ptr %val, align 4
115  %inc5 = add nsw i32 %9, 1
116  store i32 %inc5, ptr %val, align 4
117  br label %do.end8
118
119do.cond6:                                         ; No predecessors!
120  %10 = load i32, ptr %i, align 4
121  %cmp7 = icmp slt i32 %10, 10
122  br i1 %cmp7, label %do.body4, label %do.end8
123
124do.end8:                                          ; preds = %do.cond6, %do.body4
125  %11 = load i32, ptr %i, align 4
126  %dec = add nsw i32 %11, -1
127  store i32 %dec, ptr %i, align 4
128  br label %do.end11
129
130do.cond9:                                         ; No predecessors!
131  %12 = load i32, ptr %val, align 4
132  %cmp10 = icmp slt i32 %12, 10
133  br i1 %cmp10, label %do.body2, label %do.end11
134
135do.end11:                                         ; preds = %do.cond9, %do.end8
136  %13 = load i32, ptr %val, align 4
137  ret i32 %13
138}
139
140; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)
141declare token @llvm.experimental.convergence.loop() #1
142
143; Function Attrs: convergent noinline norecurse nounwind optnone
144define internal spir_func void @main() #2 {
145entry:
146  %0 = call token @llvm.experimental.convergence.entry()
147  %call1 = call spir_func noundef i32 @_Z7processv() #4 [ "convergencectrl"(token %0) ]
148  ret void
149}
150
151; Function Attrs: convergent norecurse
152define void @main.1() #3 {
153entry:
154  call void @main()
155  ret void
156}
157
158attributes #0 = { convergent noinline nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
159attributes #1 = { convergent nocallback nofree nosync nounwind willreturn memory(none) }
160attributes #2 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
161attributes #3 = { convergent norecurse "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
162attributes #4 = { convergent }
163
164!llvm.module.flags = !{!0, !1, !2}
165
166!0 = !{i32 1, !"wchar_size", i32 4}
167!1 = !{i32 4, !"dx.disable_optimizations", i32 1}
168!2 = !{i32 7, !"frame-pointer", i32 2}
169