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001-revert_register_mode_search.patch
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001-revert_register_mode_search.patch
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commit 31285a20390a5e53a74a2a71d1b5c82f366ddd5a
Author: Felix Fietkau <nbd@openwrt.org>
Date: Tue May 6 11:49:05 2014 +0000
gcc: revert an upstream patch that is causing a regression on powerpc
https://forum.openwrt.org/viewtopic.php?pid=232494#p232494
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 40709
Revert of:
commit 275035b56823b26d5fb7e90fad945b998648edf2
Author: bergner <bergner@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Sep 5 14:09:07 2013 +0000
PR target/58139
* reginfo.c (choose_hard_reg_mode): Scan through all mode classes
looking for widest mode.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202286 138bc75d-0d04-0410-961f-82ee72b054a4
--- a/gcc/reginfo.c
+++ b/gcc/reginfo.c
@@ -637,35 +637,40 @@ choose_hard_reg_mode (unsigned int regno
mode = GET_MODE_WIDER_MODE (mode))
if ((unsigned) hard_regno_nregs[regno][mode] == nregs
&& HARD_REGNO_MODE_OK (regno, mode)
- && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
- && GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+ && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
found_mode = mode;
+ if (found_mode != VOIDmode)
+ return found_mode;
+
for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT);
mode != VOIDmode;
mode = GET_MODE_WIDER_MODE (mode))
if ((unsigned) hard_regno_nregs[regno][mode] == nregs
&& HARD_REGNO_MODE_OK (regno, mode)
- && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
- && GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+ && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
found_mode = mode;
+ if (found_mode != VOIDmode)
+ return found_mode;
+
for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT);
mode != VOIDmode;
mode = GET_MODE_WIDER_MODE (mode))
if ((unsigned) hard_regno_nregs[regno][mode] == nregs
&& HARD_REGNO_MODE_OK (regno, mode)
- && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
- && GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+ && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
found_mode = mode;
+ if (found_mode != VOIDmode)
+ return found_mode;
+
for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_INT);
mode != VOIDmode;
mode = GET_MODE_WIDER_MODE (mode))
if ((unsigned) hard_regno_nregs[regno][mode] == nregs
&& HARD_REGNO_MODE_OK (regno, mode)
- && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
- && GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+ && (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
found_mode = mode;
if (found_mode != VOIDmode)