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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() {
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[unroll] do {} while (false);
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}
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void f1() {
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[unroll] do {;} while (false);
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}
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float f2(float input) {
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do { return (float4)input; } while (input > 2.0);
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}
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void f3(float input) {
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do ++input; while (input < 10.0);
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}
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void f4(float input) {
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do while (++input < 10.0); while (++input < 10.0); // nest while inside do-while
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}
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float4 PixelShaderFunction(float input) : COLOR0
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{
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f0();
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f1();
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f2(input);
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f3(input);
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f4(input);
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return (float4)input;
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}
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