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Re: [PATCH, i386] Optionally use %xmm0 to return float and/or doublevalues (take 2)

Paolo Bonzini wrote:

However, tomorrow (unless Uros beats me to it :-) I'll benchmark povray: a much simpler patch that only does this for local functions might still provide a good bang for the buck.

A compile error is here:

+  /* Most things go in %eax, except (unless -mno-fp-ret-in-387) fp values.  */
+    return 0;

When (fixed) patch is applied, povray-3.50c (-mfpmath=sse) compilation fails with:

c++ -DPREFIX=\"/usr/local\" -DPOV_LIB_DIR=\"/usr/local/share/povray-3.5\" -DCOMPILER_VER=\".Linux.gcc\" -DSYSCONFDIR=\"/usr/local/etc\" -DUSE_IO_RESTRICTIONS=\"\" `if [ "Xgcc" = "Xgcc" ]; then echo "-Wno-multichar"; fi ` -O3 -march=pentium4 -mfpmath=sse -ffast-math -D__NO_MATH_INLINES -finline-functions -fomit-frame-pointer -funroll-loops -fexpensive-optimizations -malign-double -foptimize-sibling-calls -minline-all-stringops -Wno-multichar -c chi2.cpp
chi2.cpp: In function âdouble lgam(double)â:
chi2.cpp:347: warning: converting to âintâ from âdoubleâ
chi2.cpp:417: internal compiler error: in cgraph_local_info, at cgraph.c:443
Please submit a full bug report,


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