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[AArch64] Fix preferred_reload_class for regclass STACK_REG. 

From-SVN: r203778
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Marcus Shawcroft 2013-10-17 16:31:47 +00:00 committed by Marcus Shawcroft
parent a115cf9c95
commit 51bb310d15
2 changed files with 15 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2013-10-17 Marcus Shawcroft <marcus.shawcroft@arm.com>
* config/aarch64/aarch64.c (aarch64_preferred_reload_class): Adjust
handling of STACK_REG.
2013-10-17 Richard Biener <rguenther@suse.de>
PR tree-optimization/58143

11
gcc/config/aarch64/aarch64.c
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@ -4219,9 +4219,18 @@ aarch64_class_max_nregs (reg_class_t regclass, enum machine_mode mode)
static reg_class_t
aarch64_preferred_reload_class (rtx x, reg_class_t regclass)
{
if (regclass == POINTER_REGS || regclass == STACK_REG)
if (regclass == POINTER_REGS)
return GENERAL_REGS;
if (regclass == STACK_REG)
{
if (REG_P(x)
&& reg_class_subset_p (REGNO_REG_CLASS (REGNO (x)), POINTER_REGS))
return regclass;
return NO_REGS;
}
/* If it's an integer immediate that MOVI can't handle, then
FP_REGS is not an option, so we return NO_REGS instead. */
if (CONST_INT_P (x) && reg_class_subset_p (regclass, FP_REGS)