[clang] [llvm] [X86][AVX10.2] Support AVX10.2-SATCVT-DS new instructions. (PR #102592)

[Phoebe Wang via cfe-commits]

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@@ -2122,6 +2122,36 @@ TARGET_BUILTIN(__builtin_ia32_vpdpwuud256, "V8iV8iV8iV8i", "nV:256:", "avxvnniin
 TARGET_BUILTIN(__builtin_ia32_vpdpwuuds128, "V4iV4iV4iV4i", "nV:128:", "avxvnniint16|avx10.2-256")
 TARGET_BUILTIN(__builtin_ia32_vpdpwuuds256, "V8iV8iV8iV8i", "nV:256:", "avxvnniint16|avx10.2-256")
 
+// AVX10.2 SATCVT-DS
+TARGET_BUILTIN(__builtin_ia32_vcvttssd2si32, "iV2dIi", "ncV:128:", "avx10.2-256")
+TARGET_BUILTIN(__builtin_ia32_vcvttssd2usi32, "UiV2dIi", "ncV:128:", "avx10.2-256")
+TARGET_BUILTIN(__builtin_ia32_vcvttsss2si32, "iV4fIi", "ncV:128:", "avx10.2-256")
+TARGET_BUILTIN(__builtin_ia32_vcvttsss2usi32, "UiV4fIi", "ncV:128:", "avx10.2-256")
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phoebewang wrote:

The `__builtin_ia32_vcvtss2si32` matches with instruction name. Using `sis32/usis32` matches with instruction name too.

So unless there's conversion that put the last s in the middle, you should introduce new conversion here.

https://github.com/llvm/llvm-project/pull/102592