glslang/Test/spv.dead-after-discard.frag
David Neto 8c3d5b4b6c SPIR-V: Aggressively prune unreachable merge, continue target
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.
2019-10-29 15:33:54 -04:00

11 lines
125 B
GLSL

#version 450
layout(location =0 ) in float c;
layout(location =0 ) out int o;
void main() {
o = 1;
discard;
o = 3;
}