mirror of
https://github.com/KhronosGroup/glslang
synced 2024-09-19 20:29:54 +00:00
8c3d5b4b6c
More aggressively prune unreachable code as follows.
When no control flow edges reach a merge block or continue target:
- delete their contents so that:
- a merge block becomes OpLabel, then OpUnreachable
- a continue target becomes OpLabel, then an OpBranch back to the
loop header
- any basic block which is dominated by such a merge block or continue
target is removed as well.
- decorations targeting the removed instructions are removed.
Enables the SPIR-V builder post-processing step the GLSLANG_WEB case.
30 lines
499 B
GLSL
30 lines
499 B
GLSL
void f0() {
|
|
[unroll] do {} while (false);
|
|
}
|
|
|
|
void f1() {
|
|
[unroll] do {;} while (false);
|
|
}
|
|
|
|
float f2(float input) {
|
|
do { return (float4)input; } while (input > 2.0);
|
|
}
|
|
|
|
void f3(float input) {
|
|
do ++input; while (input < 10.0);
|
|
}
|
|
|
|
void f4(float input) {
|
|
do while (++input < 10.0); while (++input < 10.0); // nest while inside do-while
|
|
}
|
|
|
|
float4 PixelShaderFunction(float input) : COLOR0
|
|
{
|
|
f0();
|
|
f1();
|
|
f2(input);
|
|
f3(input);
|
|
f4(input);
|
|
return (float4)input;
|
|
}
|