[llvm] [NFC][AMDGPU] Use m_Intrinsic and m_AnyIntrinsic PatternMatch combinators across the backend (PR #194337)

[Pierre van Houtryve via llvm-commits]

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@@ -964,6 +964,7 @@ AMDGPUPromoteAllocaImpl::getVectorTypeForAlloca(Type *AllocaTy) const {
 }
 
 void AMDGPUPromoteAllocaImpl::analyzePromoteToVector(AllocaAnalysis &AA) const {
+  using namespace PatternMatch;
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Pierre-vh wrote:

Don't bother with using namespace if there is only one use, I don't think it helps readability. Same in this file and the others.

https://github.com/llvm/llvm-project/pull/194337