; RUN: %if spirv-tools %{ llc -mtriple=spirv-unknown-vulkan-compute -O0 %s -o - | spirv-as --preserve-numeric-ids - -o - | spirv-val %}
; RUN: llc -mtriple=spirv-unknown-vulkan-compute -O0 %s -o - | spirv-sim --function=_Z7processv --wave=1 --expects=4
;
; Source HLSL:
;
; int process() {
; int val = 0;
;
; for (int i = 0; i < 10; ++i) {
; if (i < 5) {
; break;
; }
; val = i;
; {
; break;
; }
; break; // No SPIR-V should be emitted for this statement.
; val++; // No SPIR-V should be emitted for this statement.
; while(true); // No SPIR-V should be emitted for this statement.
; }
;
; ////////////////////////////////////////////////////////////////////////////////
; // Nested for loops with break statements //
; // Each break statement should branch to the corresponding loop's break block //
; ////////////////////////////////////////////////////////////////////////////////
; for (int j = 0; j < 10; ++j) {
; val = j+5;
; for ( ; val < 20; ++val) {
; int k = val + j;
; {
; {
; break;
; }
; }
; k++; // No SPIR-V should be emitted for this statement.
; }
;
; // FIXME: val--; generates add nsw i32 ..., -1
; // This is compiled into a OpIAdd %val, MAX_INT.
; val -= 1;
; break;
; break; // No SPIR-V should be emitted for this statement.
; val = val*10; // No SPIR-V should be emitted for this statement.
; }
;
; return val;
; }
;
; [numthreads(1, 1, 1)]
; void main() {
; process();
; }
target datalayout = "e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-G1"
target triple = "spirv-unknown-vulkan1.3-compute"
; Function Attrs: convergent noinline nounwind optnone
define spir_func noundef i32 @_Z7processv() #0 {
entry:
%0 = call token @llvm.experimental.convergence.entry()
%val = alloca i32, align 4
%i = alloca i32, align 4
%j = alloca i32, align 4
%k = alloca i32, align 4
store i32 0, ptr %val, align 4
store i32 0, ptr %i, align 4
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]
%2 = load i32, ptr %i, align 4
%cmp = icmp slt i32 %2, 10
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
%3 = load i32, ptr %i, align 4
%cmp1 = icmp slt i32 %3, 5
br i1 %cmp1, label %if.then, label %if.end
if.then: ; preds = %for.body
br label %for.end
if.end: ; preds = %for.body
%4 = load i32, ptr %i, align 4
store i32 %4, ptr %val, align 4
br label %for.end
for.inc: ; No predecessors!
%5 = load i32, ptr %i, align 4
%inc = add nsw i32 %5, 1
store i32 %inc, ptr %i, align 4
br label %for.cond
for.end: ; preds = %if.end, %if.then, %for.cond
store i32 0, ptr %j, align 4
br label %for.cond2
for.cond2: ; preds = %for.inc12, %for.end
%6 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]
%7 = load i32, ptr %j, align 4
%cmp3 = icmp slt i32 %7, 10
br i1 %cmp3, label %for.body4, label %for.end14
for.body4: ; preds = %for.cond2
%8 = load i32, ptr %j, align 4
%add = add nsw i32 %8, 5
store i32 %add, ptr %val, align 4
br label %for.cond5
for.cond5: ; preds = %for.inc9, %for.body4
%9 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %6) ]
%10 = load i32, ptr %val, align 4
%cmp6 = icmp slt i32 %10, 20
br i1 %cmp6, label %for.body7, label %for.end11
for.body7: ; preds = %for.cond5
%11 = load i32, ptr %val, align 4
%12 = load i32, ptr %j, align 4
%add8 = add nsw i32 %11, %12
store i32 %add8, ptr %k, align 4
br label %for.end11
for.inc9: ; No predecessors!
%13 = load i32, ptr %val, align 4
%inc10 = add nsw i32 %13, 1
store i32 %inc10, ptr %val, align 4
br label %for.cond5
for.end11: ; preds = %for.body7, %for.cond5
%14 = load i32, ptr %val, align 4
%sub = sub nsw i32 %14, 1
store i32 %sub, ptr %val, align 4
br label %for.end14
for.inc12: ; No predecessors!
%15 = load i32, ptr %j, align 4
%inc13 = add nsw i32 %15, 1
store i32 %inc13, ptr %j, align 4
br label %for.cond2
for.end14: ; preds = %for.end11, %for.cond2
%16 = load i32, ptr %val, align 4
ret i32 %16
}
; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)
declare token @llvm.experimental.convergence.entry() #1
; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)
declare token @llvm.experimental.convergence.loop() #1
; Function Attrs: convergent noinline norecurse nounwind optnone
define internal spir_func void @main() #2 {
entry:
%0 = call token @llvm.experimental.convergence.entry()
%call1 = call spir_func noundef i32 @_Z7processv() #4 [ "convergencectrl"(token %0) ]
ret void
}
; Function Attrs: convergent norecurse
define void @main.1() #3 {
entry:
call void @main()
ret void
}
attributes #0 = { convergent noinline nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
attributes #1 = { convergent nocallback nofree nosync nounwind willreturn memory(none) }
attributes #2 = { convergent noinline norecurse nounwind optnone "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
attributes #3 = { convergent norecurse "frame-pointer"="all" "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
attributes #4 = { convergent }
!llvm.module.flags = !{!0, !1, !2}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 4, !"dx.disable_optimizations", i32 1}
!2 = !{i32 7, !"frame-pointer", i32 2}
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