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ira.c (setup_pressure_classes): Handle synonymous classes.

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	* ira.c (setup_pressure_classes): Handle synonymous classes.

From-SVN: r191159
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Richard Sandiford 2012-09-10 19:40:43 +00:00 • committed by Richard Sandiford
parent 881a9dcdef
commit af2b97c462
2 changed files with 5 additions and 1 deletions
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gcc/ChangeLog
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@ -1,3 +1,7 @@
2012-09-10 Richard Sandiford <rdsandiford@googlemail.com>
* ira.c (setup_pressure_classes): Handle synonymous classes.
2012-09-10 Marc Glisse <marc.glisse@inria.fr>
* tree-ssa-forwprop.c (simplify_bitfield_ref): New function.

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gcc/ira.c
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@ -789,7 +789,7 @@ setup_pressure_classes (void)
hard registers and movement between them is costly
(e.g. SPARC FPCC registers). We still should consider it
as a candidate for a pressure class. */
&& alloc_reg_class_subclasses[cl][0] != LIM_REG_CLASSES)
&& alloc_reg_class_subclasses[cl][0] < cl)
{
/* Check that the moves between any hard registers of the
current class are not more expensive for a legal mode