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| author | Richard Henderson <rth@twiddle.net> | 2013-08-28 15:51:08 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2013-09-25 07:46:31 -0700 |
| commit | 4b2b114d8cc0f0f59bc20855bf287fb3df55b553 (patch) | |
| tree | 1778fb65055f43c0c0dbf633c0d494ed00b14c35 /tcg/ppc | |
| parent | 619f90ba62e27c674b1a9af8c0ae68eef8d64a92 (diff) | |
| download | qemu-4b2b114d8cc0f0f59bc20855bf287fb3df55b553.tar.gz qemu-4b2b114d8cc0f0f59bc20855bf287fb3df55b553.tar.bz2 qemu-4b2b114d8cc0f0f59bc20855bf287fb3df55b553.zip | |
tcg-ppc: Avoid code for nop move
While these are rare from code that's been through the optimizer,
it's not uncommon within the tcg backend.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg/ppc')
| -rw-r--r-- | tcg/ppc/tcg-target.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c index 24a8621fe1..965108b8bd 100644 --- a/tcg/ppc/tcg-target.c +++ b/tcg/ppc/tcg-target.c @@ -450,7 +450,9 @@ static const uint32_t tcg_to_bc[] = { static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg) { - tcg_out32 (s, OR | SAB (arg, ret, arg)); + if (ret != arg) { + tcg_out32(s, OR | SAB(arg, ret, arg)); + } } static void tcg_out_movi(TCGContext *s, TCGType type, |