Fixup nits: Code style and fwidth test triple

Author: Alexander-Johnston

clang/test/CodeGenHLSL/builtins/fwidth.hlsl

@@ -1,7 +1,7 @@
 // RUN: %clang_cc1 -finclude-default-header  -x hlsl  -triple dxil-pc-shadermodel6.3-library %s \
 // RUN:  -emit-llvm -disable-llvm-passes -fnative-half-type -o - | \
 // RUN:  FileCheck %s --check-prefixes=CHECK
-// RUN: %clang_cc1 -finclude-default-header  -x hlsl  -triple spirv-pc-vulkan-compute  %s \
+// RUN: %clang_cc1 -finclude-default-header  -x hlsl  -triple spirv-unknown-vulkan1.3-library  %s \
 // RUN:  -emit-llvm -disable-llvm-passes -fnative-half-type -o - | \
 // RUN:  FileCheck %s --check-prefixes=CHECK-SPIRV
 

llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp

@@ -3582,15 +3582,12 @@ bool SPIRVInstructionSelector::selectIntrinsic(Register ResVReg,
   case Intrinsic::spv_unpackhalf2x16: {
     return selectExtInst(ResVReg, ResType, I, GL::UnpackHalf2x16);
   }
-  case Intrinsic::spv_ddx_coarse: {
+  case Intrinsic::spv_ddx_coarse:
     return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdxCoarse);
-  }
-  case Intrinsic::spv_ddy_coarse: {
+  case Intrinsic::spv_ddy_coarse:
     return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpDPdyCoarse);
-  }
-  case Intrinsic::spv_fwidth: {
+  case Intrinsic::spv_fwidth:
     return selectDerivativeInst(ResVReg, ResType, I, SPIRV::OpFwidth);
-  }
   default: {
     std::string DiagMsg;
     raw_string_ostream OS(DiagMsg);