Add matrix select intrinsic (#7566)

* Add matrix select intrinsic

* Fix hlsl test

* Restrict matrix select to HLSL

* Better test for HLSL side

* Select route for GLSL/SPIRV

* Exclude matrices from select legalization

* Exclude CUDA from select test

* Inline and move

* format code

---------

Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>

1 files changed, 7 insertions, 7 deletions

diff --git a/source/slang/slang-ir.cpp b/source/slang/slang-ir.cpp
index 63d3766ab..b48dcc7e6 100644
--- a/source/slang/slang-ir.cpp
+++ b/source/slang/slang-ir.cpp
@@ -5995,14 +5995,14 @@ IRInst* IRBuilder::emitIfElseWithBlocks(
     outTrueBlock = createBlock();
     outAfterBlock = createBlock();
     outFalseBlock = createBlock();
+
     auto f = getFunc();
-    SLANG_ASSERT(f);
-    if (f)
-    {
-        f->addBlock(outTrueBlock);
-        f->addBlock(outAfterBlock);
-        f->addBlock(outFalseBlock);
-    }
+
+    SLANG_ASSERT(f && "Expected function");
+    f->addBlock(outTrueBlock);
+    f->addBlock(outAfterBlock);
+    f->addBlock(outFalseBlock);
+
     auto result = emitIfElse(val, outTrueBlock, outFalseBlock, outAfterBlock);
     setInsertInto(outTrueBlock);
     return result;