; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-vulkan-compute %s -o - -filetype=obj | spirv-val %}
; RUN: llc -mtriple=spirv-unknown-vulkan-compute -O0 %s -o - | spirv-sim --function=_Z7processv --wave=1 --expects=2
; int foo() { return true; }
;
; int process() {
; int val = 0;
; int i = 0;
;
; do {
; ++i;
; if (i > 5) {
; break;
; break; // No SPIR-V should be emitted for this statement.
; val = i; // No SPIR-V should be emitted for this statement.
; while(true); // No SPIR-V should be emitted for this statement.
; }
;
; val = i;
; {
; {
; break;
; }
; }
; val = val * 2; // No SPIR-V should be emitted for this statement.
;
; } while (i < 10);
;
; ////////////////////////////////////////////////////////////////////////////////
; // Nested do-while loops with break statements //
; // Each break statement should branch to the corresponding loop's break block //
; ////////////////////////////////////////////////////////////////////////////////
;
; do {
; ++i;
;
; do {
; ++val;
; break;
; } while (i < 10);
;
; --i;
;
; {
; break;
; }
;
; } while(val < 10);
;
; 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 @_Z3foov() #0 {
entry:
%0 = call token @llvm.experimental.convergence.entry()
ret i32 1
}
; Function Attrs: convergent nocallback nofree nosync nounwind willreturn memory(none)
declare token @llvm.experimental.convergence.entry() #1
; 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
store i32 0, ptr %val, align 4
store i32 0, ptr %i, align 4
br label %do.body
do.body: ; preds = %do.cond, %entry
%1 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]
%2 = load i32, ptr %i, align 4
%inc = add nsw i32 %2, 1
store i32 %inc, ptr %i, align 4
%3 = load i32, ptr %i, align 4
%cmp = icmp sgt i32 %3, 5
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %do.body
br label %do.end
if.end: ; preds = %do.body
%4 = load i32, ptr %i, align 4
store i32 %4, ptr %val, align 4
br label %do.end
do.cond: ; No predecessors!
%5 = load i32, ptr %i, align 4
%cmp1 = icmp slt i32 %5, 10
br i1 %cmp1, label %do.body, label %do.end
do.end: ; preds = %do.cond, %if.end, %if.then
br label %do.body2
do.body2: ; preds = %do.cond9, %do.end
%6 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %0) ]
%7 = load i32, ptr %i, align 4
%inc3 = add nsw i32 %7, 1
store i32 %inc3, ptr %i, align 4
br label %do.body4
do.body4: ; preds = %do.cond6, %do.body2
%8 = call token @llvm.experimental.convergence.loop() [ "convergencectrl"(token %6) ]
%9 = load i32, ptr %val, align 4
%inc5 = add nsw i32 %9, 1
store i32 %inc5, ptr %val, align 4
br label %do.end8
do.cond6: ; No predecessors!
%10 = load i32, ptr %i, align 4
%cmp7 = icmp slt i32 %10, 10
br i1 %cmp7, label %do.body4, label %do.end8
do.end8: ; preds = %do.cond6, %do.body4
%11 = load i32, ptr %i, align 4
%dec = add nsw i32 %11, -1
store i32 %dec, ptr %i, align 4
br label %do.end11
do.cond9: ; No predecessors!
%12 = load i32, ptr %val, align 4
%cmp10 = icmp slt i32 %12, 10
br i1 %cmp10, label %do.body2, label %do.end11
do.end11: ; preds = %do.cond9, %do.end8
%13 = load i32, ptr %val, align 4
ret i32 %13
}
; 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}
Codebase Browser
llvm