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| author | Segher Boessenkool <segher@kernel.crashing.org> | 2014-12-11 15:29:14 +0100 |
|---|---|---|
| committer | Segher Boessenkool <segher@gcc.gnu.org> | 2014-12-11 15:29:14 +0100 |
| commit | 08e39a540603d6a41caacdc340015c063997b2a2 (patch) | |
| tree | 98e004fc0e6b770f8a349e3f46dd33b789887427 | |
| parent | 26a4d424e19c57db7055f134eff87f26fa61cae5 (diff) | |
| download | gcc-08e39a540603d6a41caacdc340015c063997b2a2.zip gcc-08e39a540603d6a41caacdc340015c063997b2a2.tar.gz gcc-08e39a540603d6a41caacdc340015c063997b2a2.tar.bz2 | |
combine.c (try_combine): Do not allow combining a PARALLEL I2 with a register move I3 if that I2 is an asm.
* combine.c (try_combine): Do not allow combining a PARALLEL I2
with a register move I3 if that I2 is an asm.
From-SVN: r218623
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 7 |
2 files changed, 12 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5301470..fa79ce9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2014-12-11 Segher Boessenkool <segher@kernel.crashing.org> + + * combine.c (try_combine): Do not allow combining a PARALLEL I2 + with a register move I3 if that I2 is an asm. + 2014-12-11 Kyrylo Tkachov <kyrylo.tkachov@arm.com> * config/arm/arm_neon.h (vrndqn_f32): Rename to... diff --git a/gcc/combine.c b/gcc/combine.c index 9ed03be..c95b493 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -2716,6 +2716,13 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0, SET_DEST (XVECEXP (p2, 0, i)))) break; + /* Make sure this PARALLEL is not an asm. We do not allow combining + that usually (see can_combine_p), so do not here either. */ + for (i = 0; i < XVECLEN (p2, 0); i++) + if (GET_CODE (XVECEXP (p2, 0, i)) == SET + && GET_CODE (SET_SRC (XVECEXP (p2, 0, i))) == ASM_OPERANDS) + break; + if (i == XVECLEN (p2, 0)) for (i = 0; i < XVECLEN (p2, 0); i++) if (GET_CODE (XVECEXP (p2, 0, i)) == SET |