diff options
| author | cbaylis <cbaylis@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-07-31 14:27:58 +0000 |
|---|---|---|
| committer | cbaylis <cbaylis@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-07-31 14:27:58 +0000 |
| commit | f0f38f1675bc83b4fdc13d4592848fc62368e6f1 (patch) | |
| tree | e439337d478b57a9ca89cef07e1187353c032812 /gcc | |
| parent | d3a3536500cd7bbb4ec178b21b3225a488c7893c (diff) | |
| download | gcc-f0f38f1675bc83b4fdc13d4592848fc62368e6f1.tar.gz | |
PR target/61948
gcc/ChangeLog:
2014-07-29 Charles Baylis <charles.baylis@linaro.org>
PR target/61948
* config/arm/neon.md (ashldi3_neon): Don't emit arm_ashldi3_1bit unless
constraints are satisfied.
(<shift>di3_neon): Likewise.
gcc/testsuite/ChangeLog:
2014-07-29 Charles Baylis <charles.baylis@linaro.org>
PR target/61948
* gcc.target/arm/pr61948.c: New test case.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@213376 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/arm/neon.md | 8 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/arm/pr61948.c | 16 |
4 files changed, 34 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f75f34682eb..33930dce829 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2014-07-31 Charles Baylis <charles.baylis@linaro.org> + + PR target/61948 + * config/arm/neon.md (ashldi3_neon): Don't emit arm_ashldi3_1bit unless + constraints are satisfied. + (<shift>di3_neon): Likewise. + 2014-07-31 Richard Biener <rguenther@suse.de> PR tree-optimization/61964 diff --git a/gcc/config/arm/neon.md b/gcc/config/arm/neon.md index 1fc4dcd8275..dc364eeb64e 100644 --- a/gcc/config/arm/neon.md +++ b/gcc/config/arm/neon.md @@ -1041,7 +1041,9 @@ } else { - if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) == 1) + if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) == 1 + && (!reg_overlap_mentioned_p (operands[0], operands[1]) + || REGNO (operands[0]) == REGNO (operands[1]))) /* This clobbers CC. */ emit_insn (gen_arm_ashldi3_1bit (operands[0], operands[1])); else @@ -1141,7 +1143,9 @@ } else { - if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) == 1) + if (CONST_INT_P (operands[2]) && INTVAL (operands[2]) == 1 + && (!reg_overlap_mentioned_p (operands[0], operands[1]) + || REGNO (operands[0]) == REGNO (operands[1]))) /* This clobbers CC. */ emit_insn (gen_arm_<shift>di3_1bit (operands[0], operands[1])); else diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 1619d00dc81..1932ab146a5 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2014-07-31 Charles Baylis <charles.baylis@linaro.org> + + PR target/61948 + * gcc.target/arm/pr61948.c: New test case. + 2014-07-31 Richard Biener <rguenther@suse.de> PR tree-optimization/61964 diff --git a/gcc/testsuite/gcc.target/arm/pr61948.c b/gcc/testsuite/gcc.target/arm/pr61948.c new file mode 100644 index 00000000000..411e898ea77 --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/pr61948.c @@ -0,0 +1,16 @@ +/* PR target/61948 */ +/* { dg-do compile } */ +/* { dg-require-effective-target arm_neon_ok } */ +/* { dg-require-effective-target arm_thumb2_ok } */ +/* { dg-options "-O2 -mthumb" } */ +/* { dg-add-options arm_neon } */ + +long long f (long long *c) +{ + long long t = c[0]; + asm ("nop" : : : "r0", "r3", "r4", "r5", + "r6", "r7", "r8", "r9", + "r10", "r11", "r12", "memory"); + return t >> 1; +} + |