From a5dfa5cd2bfa11fb3d9e84877f8dead1815e9077 Mon Sep 17 00:00:00 2001 From: Tim Foley Date: Tue, 7 Nov 2017 16:47:36 -0800 Subject: IR: add support for `discard` statement (#261) - Add definition of `discard` instruction - A `discard` is a terminator instruction, just like `returnVoid` - Lower `DiscardStmt` in AST to a `discard` instruction in the IR - Emit `discard` instruction as a `discard;` statement when emitting HLSL/GLSL - Add a test case using the "graphics compute" mode that tests discard. The test writes to one entry in a UAV before doing a conditional (always true at runtime) discard, and then writes to another entry; we expect to see the results of the first write, but not the second. --- source/slang/ir-inst-defs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'source/slang/ir-inst-defs.h') diff --git a/source/slang/ir-inst-defs.h b/source/slang/ir-inst-defs.h index d2e2c12e8..a8118f714 100644 --- a/source/slang/ir-inst-defs.h +++ b/source/slang/ir-inst-defs.h @@ -181,6 +181,8 @@ INST(if, if, 3, 0) INST(ifElse, ifElse, 4, 0) INST(loopTest, loopTest, 3, 0) +INST(discard, discard, 0, 0) + INST(Add, add, 2, 0) INST(Sub, sub, 2, 0) INST(Mul, mul, 2, 0) -- cgit v1.2.3