[llvm] [LoongArch] Enable FeatureExtLSX for generic-la64 processor (PR #113421)

[WÁNG Xuěruì via llvm-commits]

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@@ -2,7 +2,7 @@
 ; RUN: opt -passes=loop-idiom -mtriple=loongarch32 -mattr=+lsx -S < %s | FileCheck %s --check-prefix=CPOP
 ; RUN: opt -passes=loop-idiom -mtriple=loongarch64 -mattr=+lsx -S < %s | FileCheck %s --check-prefix=CPOP
 ; RUN: opt -passes=loop-idiom -mtriple=loongarch32 -S < %s | FileCheck %s --check-prefix=NOCPOP
-; RUN: opt -passes=loop-idiom -mtriple=loongarch64 -S < %s | FileCheck %s --check-prefix=NOCPOP
+; RUN: opt -passes=loop-idiom -mtriple=loongarch64 -S < %s | FileCheck %s --check-prefix=CPOP
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xen0n wrote:

We can additionally test LA64 without LSX somehow, to ensure that coverage doesn't shrink?

https://github.com/llvm/llvm-project/pull/113421