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Re: [PATCH] Optionally emit SSE ABI libm calls on x86


Hello Richard!

+   if (ix86_fpmath == FPMATH_SSE
+       && TARGET_SSE2 && TARGET_SSELIBM)
+     {
+       patch_sse_builtin (BUILT_IN_ACOS, "__libm_sse2_acos");
+       patch_sse_builtin (BUILT_IN_ACOSF, "__libm_sse2_acosf");
+       patch_sse_builtin (BUILT_IN_ASIN, "__libm_sse2_asin");
+       patch_sse_builtin (BUILT_IN_ASINF, "__libm_sse2_asinf");

It is interesting that float versions of functions depend on SSE2. Out of curiosity, Is there a reason that float functions can't be implemented in pure SSE (not SSE2) code? This kind of library could then be used also on pentium3.

Uros.


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