[llvm] [SPIR-V] Support extension toggling and enabling all (PR #85503)

[Michal Paszkowski via llvm-commits]

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@@ -0,0 +1,7 @@
+; RUN: llc -O0 -mtriple=spirv32-unknown-unknown --spirv-extensions=all %s -o - | FileCheck %s
+
+define i6 @getConstantI6() {
+  ret i6 2
+}
+
+; CHECK: OpExtension "SPV_INTEL_arbitrary_precision_integers"
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michalpaszkowski wrote:

We do not emit `OpExtension` instructions for extensions which are not needed/used in the SPIR-V module. Here the function uses i6 type and so we emit `OpExtension "SPV_INTEL_arbitrary_precision_integers"`

https://github.com/llvm/llvm-project/pull/85503