diff options
| author | Christophe Lyon <christophe.lyon@linaro.org> | 2016-06-08 14:32:41 +0200 |
|---|---|---|
| committer | Yvan Roux <yvan.roux@linaro.org> | 2016-06-14 13:32:05 +0000 |
| commit | 1f4098872e983839005d56c080d00ba94356657e (patch) | |
| tree | 4cc77561e40c3c5d6e072846f0df23e92007ef29 | |
| parent | 2abcccf993e073a759a8a55493c5da4bddd2e23b (diff) | |
gcc/
Backport from trunk r236984.
2016-06-01 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/arm/sync.md (arm_store_exclusive<mode>):
Use 'H' output modifier on operands[2] rather than creating a new
entry in out-of-bounds memory of the operands array.
(arm_store_release_exclusivedi): Likewise.
Change-Id: I37d221771a13a79ff59554c1fbf250dcaf95c14d
| -rw-r--r-- | gcc/config/arm/sync.md | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/gcc/config/arm/sync.md b/gcc/config/arm/sync.md index 0589e4d8905..abcfbcb1eac 100644 --- a/gcc/config/arm/sync.md +++ b/gcc/config/arm/sync.md @@ -452,14 +452,13 @@ { if (<MODE>mode == DImode) { - rtx value = operands[2]; /* The restrictions on target registers in ARM mode are that the two registers are consecutive and the first one is even; Thumb is actually more flexible, but DI should give us this anyway. - Note that the 1st register always gets the lowest word in memory. */ - gcc_assert ((REGNO (value) & 1) == 0 || TARGET_THUMB2); - operands[3] = gen_rtx_REG (SImode, REGNO (value) + 1); - return "strexd%?\t%0, %2, %3, %C1"; + Note that the 1st register always gets the + lowest word in memory. */ + gcc_assert ((REGNO (operands[2]) & 1) == 0 || TARGET_THUMB2); + return "strexd%?\t%0, %2, %H2, %C1"; } return "strex<sync_sfx>%?\t%0, %2, %C1"; } @@ -475,11 +474,9 @@ VUNSPEC_SLX))] "TARGET_HAVE_LDACQ && ARM_DOUBLEWORD_ALIGN" { - rtx value = operands[2]; /* See comment in arm_store_exclusive<mode> above. */ - gcc_assert ((REGNO (value) & 1) == 0 || TARGET_THUMB2); - operands[3] = gen_rtx_REG (SImode, REGNO (value) + 1); - return "stlexd%?\t%0, %2, %3, %C1"; + gcc_assert ((REGNO (operands[2]) & 1) == 0 || TARGET_THUMB2); + return "stlexd%?\t%0, %2, %H2, %C1"; } [(set_attr "predicable" "yes") (set_attr "predicable_short_it" "no")]) |