Mercurial > hg > truffle
diff src/cpu/sparc/vm/vm_version_sparc.cpp @ 3804:faa472957b38
7059034: Use movxtod/movdtox on T4
Summary: Use new VIS3 mov instructions on T4 for move data between general and float registers.
Reviewed-by: never, twisti
author | kvn |
---|---|
date | Fri, 08 Jul 2011 09:38:48 -0700 |
parents | c04052fd6ae1 |
children | 3d42f82cd811 |
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--- a/src/cpu/sparc/vm/vm_version_sparc.cpp Thu Jul 07 10:51:07 2011 -0700 +++ b/src/cpu/sparc/vm/vm_version_sparc.cpp Fri Jul 08 09:38:48 2011 -0700 @@ -144,6 +144,18 @@ // buf is started with ", " or is empty _features_str = strdup(strlen(buf) > 2 ? buf + 2 : buf); + // UseVIS is set to the smallest of what hardware supports and what + // the command line requires. I.e., you cannot set UseVIS to 3 on + // older UltraSparc which do not support it. + if (UseVIS > 3) UseVIS=3; + if (UseVIS < 0) UseVIS=0; + if (!has_vis3()) // Drop to 2 if no VIS3 support + UseVIS = MIN2((intx)2,UseVIS); + if (!has_vis2()) // Drop to 1 if no VIS2 support + UseVIS = MIN2((intx)1,UseVIS); + if (!has_vis1()) // Drop to 0 if no VIS1 support + UseVIS = 0; + #ifndef PRODUCT if (PrintMiscellaneous && Verbose) { tty->print("Allocation: ");