From 51bb310d15b97ad1a2c1eedf8a6792663c493947 Mon Sep 17 00:00:00 2001 From: Marcus Shawcroft Date: Thu, 17 Oct 2013 16:31:47 +0000 Subject: [PATCH] [AArch64] Fix preferred_reload_class for regclass STACK_REG. From-SVN: r203778 --- gcc/ChangeLog | 5 +++++ gcc/config/aarch64/aarch64.c | 11 ++++++++++- 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5a8fb7f..5630a19 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2013-10-17 Marcus Shawcroft + + * config/aarch64/aarch64.c (aarch64_preferred_reload_class): Adjust + handling of STACK_REG. + 2013-10-17 Richard Biener PR tree-optimization/58143 diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index da3962f..7fce7a0 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -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) -- 2.7.4