e7e43727ce
* gnu/packages/patches/gcc-arm-bug-71399.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/gcc.scm (gcc-4.9)[source]: Use it.
55 lines
2 KiB
Diff
55 lines
2 KiB
Diff
Revert the following commit to work around a bootstrap comparison failure on
|
|
ARMv7, as reported at <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71399>.
|
|
|
|
commit f6ab85b7049a03962ea98924d00802da357a1ad3
|
|
Author: renlin <renlin@138bc75d-0d04-0410-961f-82ee72b054a4>
|
|
Date: Wed Dec 2 14:06:31 2015 +0000
|
|
|
|
[PR67383][ARM][4.9]Backport of "Allow any register for DImode values in Thumb2"
|
|
|
|
This partially fix PR67383. It allows the reload more flexibility to choose
|
|
spilling pseudo registers.
|
|
|
|
|
|
gcc/ChangeLog:
|
|
|
|
2015-12-02 Renlin Li <renlin.li@arm.com>
|
|
|
|
Backport from mainline.
|
|
2014-04-22 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
|
|
|
|
* config/arm/arm.c (arm_hard_regno_mode_ok): Loosen
|
|
restrictions on core registers for DImode values in Thumb2.
|
|
|
|
|
|
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@231177 138bc75d-0d04-0410-961f-82ee72b054a4
|
|
|
|
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
|
|
index 8ba6060..d9028a1 100644
|
|
--- b/gcc/config/arm/arm.c
|
|
+++ a/gcc/config/arm/arm.c
|
|
@@ -22624,19 +22624,12 @@
|
|
}
|
|
|
|
/* We allow almost any value to be stored in the general registers.
|
|
- Restrict doubleword quantities to even register pairs in ARM state
|
|
- so that we can use ldrd. Do not allow very large Neon structure
|
|
- opaque modes in general registers; they would use too many. */
|
|
+ Restrict doubleword quantities to even register pairs so that we can
|
|
+ use ldrd. Do not allow very large Neon structure opaque modes in
|
|
+ general registers; they would use too many. */
|
|
if (regno <= LAST_ARM_REGNUM)
|
|
- {
|
|
- if (ARM_NUM_REGS (mode) > 4)
|
|
- return FALSE;
|
|
-
|
|
- if (TARGET_THUMB2)
|
|
- return TRUE;
|
|
-
|
|
- return !(TARGET_LDRD && GET_MODE_SIZE (mode) > 4 && (regno & 1) != 0);
|
|
- }
|
|
+ return !(TARGET_LDRD && GET_MODE_SIZE (mode) > 4 && (regno & 1) != 0)
|
|
+ && ARM_NUM_REGS (mode) <= 4;
|
|
|
|
if (regno == FRAME_POINTER_REGNUM
|
|
|| regno == ARG_POINTER_REGNUM)
|