[SPIR-V] Fix OpSpecConstant for composite (#8278)

Updates SPIRV-Tools and fixes bad test.
spirv-val got updated and now requries an OpSpecConstantComposite if one
operand if an OpSpecConstant*.

Should fix SPIRV-Tools smoke test.

Author: Keenuts

external/SPIRV-Headers

@@ -8045,7 +8045,10 @@ SpirvInstruction *SpirvEmitter::createVectorSplat(const Expr *scalarExpr,
   // Should find a more meaningful one.
   if (auto *constVal = dyn_cast<SpirvConstant>(scalarVal)) {
     llvm::SmallVector<SpirvConstant *, 4> elements(size_t(size), constVal);
-    const bool isSpecConst = constVal->getopcode() == spv::Op::OpSpecConstant;
+    const bool isSpecConst =
+        constVal->getopcode() == spv::Op::OpSpecConstant ||
+        constVal->getopcode() == spv::Op::OpSpecConstantFalse ||
+        constVal->getopcode() == spv::Op::OpSpecConstantTrue;
     auto *value =
         spvBuilder.getConstantComposite(vecType, elements, isSpecConst);
     if (!value)

external/SPIRV-Tools

@@ -1,10 +1,12 @@
 // RUN: %dxc -T ps_6_0 -HV 2018 -E main -fcgl  %s -spirv | FileCheck %s
 
 // CHECK: OpDecorate %y SpecId 0
+// CHECK: %y = OpSpecConstantFalse %bool
 [[vk::constant_id(0)]] const bool y = false;
 
+
 [shader("pixel")]
 float4 main(float4 position : SV_Position) : SV_Target0 {
-// CHECK: OpConstantComposite %v4bool %y %y %y %y
+// CHECK: OpSpecConstantComposite %v4bool %y %y %y %y
     return y ? position : 1.0;
 }