From: Richard Sandiford Date: Fri, 25 Mar 2011 18:26:40 +0000 (+0000) Subject: arm.h (CANNOT_CHANGE_MODE_CLASS): Restrict FPA_REGS case to VFPv1. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=75f6ec9afdb6457f7a728a4360b0a37160b88c4b;p=gcc.git arm.h (CANNOT_CHANGE_MODE_CLASS): Restrict FPA_REGS case to VFPv1. gcc/ * config/arm/arm.h (CANNOT_CHANGE_MODE_CLASS): Restrict FPA_REGS case to VFPv1. From-SVN: r171520 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index fec8d1baa31..64c4b5a0cbc 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2011-03-25 Richard Sandiford + + * config/arm/arm.h (CANNOT_CHANGE_MODE_CLASS): Restrict FPA_REGS + case to VFPv1. + 2011-03-25 Nathan Froyd * fold-const.c (expr_location_or): New function. diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h index 221fbf2d92e..add8eced3ed 100644 --- a/gcc/config/arm/arm.h +++ b/gcc/config/arm/arm.h @@ -1167,12 +1167,12 @@ enum reg_class } /* FPA registers can't do subreg as all values are reformatted to internal - precision. VFP registers may only be accessed in the mode they - were set. */ -#define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \ - (GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO) \ - ? reg_classes_intersect_p (FPA_REGS, (CLASS)) \ - || reg_classes_intersect_p (VFP_REGS, (CLASS)) \ + precision. In VFPv1, VFP registers could only be accessed in the mode + they were set, so subregs would be invalid there too. However, we don't + support VFPv1 at the moment, and the restriction was lifted in VFPv2. */ +#define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \ + (GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO) \ + ? reg_classes_intersect_p (FPA_REGS, (CLASS)) \ : 0) /* The class value for index registers, and the one for base regs. */