[llvm] [SPIRV] Implement support for SPV_KHR_expect_assume (PR #66217)

[Ilia Diachkov via llvm-commits]

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@@ -881,6 +883,11 @@ void addInstrRequirements(const MachineInstr &MI,
   case SPIRV::OpGroupNonUniformBallotFindMSB:
     Reqs.addCapability(SPIRV::Capability::GroupNonUniformBallot);
     break;
+  case SPIRV::OpAssumeTrueKHR:
+  case SPIRV::OpExpectKHR:
+    Reqs.addExtension(SPIRV::Extension::SPV_KHR_expect_assume);
+    Reqs.addCapability(SPIRV::Capability::ExpectAssumeKHR);
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iliya-diyachkov wrote:

Don't we need to check ST.canUseExtension()?

https://github.com/llvm/llvm-project/pull/66217