Antonio Maiorano 66d6668372 Implement discard semantics ... Implement new transform UnwindDiscardFunctions that replaces discard statements with setting a module-level bool, adds a check and return for this bool after every function call that may discard, and finally invokes a single function that executes a discard from top-level functions. Regenerated tests and remove HLSL ones that used to fail FXC because it had difficulty with discard. Bug: tint:1478 Bug: chromium:1118 Change-Id: I09d680f59e2d5d0cad907bfbbdd426aae76d4bf3 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/84221 Reviewed-by: James Price <jrprice@google.com> Reviewed-by: Ben Clayton <bclayton@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Antonio Maiorano <amaiorano@google.com>		2022-03-28 20:51:32 +00:00
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0-opt.spvasm	tint->dawn: Shuffle source tree in preperation of merging repos	2022-02-21 15:19:07 +00:00
0-opt.wgsl	wgsl: Separate struct members with commas	2022-03-28 14:31:22 +00:00