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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)
|
