[clang] [llvm] [PowerPC] Implement Elliptic Curve Cryptography Builtins (PR #184681)

[Lei Huang via cfe-commits]

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@@ -1162,6 +1162,29 @@ UNALIASED_CUSTOM_MMA_BUILTIN(mma_dmxvf16gerx2, "vW1024*W256V",
 UNALIASED_CUSTOM_MMA_BUILTIN(mma_pmdmxvf16gerx2, "vW1024*W256Vi255i15i3",
                              "mma,isa-future-instructions")
 
+// Elliptic Curve Cryptography Builtins
+UNALIASED_CUSTOM_BUILTIN(xxmulmul, "VVVi7", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xxmulmulhiadd, "VVVi1i1i1", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xxmulmulloadd, "VVVi1i1", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xxssumudm, "VVVi1", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xxssumudmc, "VVVi1", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xxssumudmcext, "VVVVi1", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsaddadduqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsaddaddsuqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsaddsubuqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsaddsubsuqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsmerge2t1uqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsmerge2t2uqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsmerge2t3uqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsmerge3t1uqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsrebase2t1uqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsrebase2t2uqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsrebase2t3uqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsrebase2t4uqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsrebase3t1uqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsrebase3t2uqm, "VVV", false, "future-vector")
+UNALIASED_CUSTOM_BUILTIN(xsrebase3t3uqm, "VVV", false, "future-vector")
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lei137 wrote:

> So future-vector = isa-future-instructions + VSX requirement, meaning -vsx disables it while isa-future-instructions alone doesn't check VSX.

Correct.

> What about other future builtins using VSX vectors, why do they use isa-future-instructions instead?

Support for `future-vector` was only recently merged.  Yes, all future builtins using vsx should be using this.
This is consistent with non-future vsx builtins implemented previously.

https://github.com/llvm/llvm-project/pull/184681