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| author | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-11-19 08:23:43 +0000 |
|---|---|---|
| committer | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-11-19 08:23:43 +0000 |
| commit | ca80cbc1af5e3e826e8aec47506f81fa8a55f3f2 (patch) | |
| tree | 35e9c00cbd8aaeaac270c6ca8f832d1d8d5d9542 | |
| parent | 3afd54309961bf2b11e2be38e239ca689ac59d0a (diff) | |
| download | ppe42-gcc-ca80cbc1af5e3e826e8aec47506f81fa8a55f3f2.tar.gz ppe42-gcc-ca80cbc1af5e3e826e8aec47506f81fa8a55f3f2.zip | |
* emit-rtl.c (gen_lowpart): Don't force MEMs into a register unless
the register lowpart is a TRULY_NOOP_TRUNCATION.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@73731 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/emit-rtl.c | 2 |
2 files changed, 7 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 931f74c2aeb..9c1b245aee8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-11-19 Richard SAndiford <rsandifo@redhat.com> + + * emit-rtl.c (gen_lowpart): Don't force MEMs into a register unless + the register lowpart is a TRULY_NOOP_TRUNCATION. + 2003-11-19 Richard Henderson <rth@redhat.com> * config/i386/i386.c (print_reg): Handle QI and HI modes for diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index 9c50e2371fd..a528641a6f9 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -1356,6 +1356,8 @@ gen_lowpart (enum machine_mode mode, rtx x) /* The following exposes the use of "x" to CSE. */ if (GET_MODE_SIZE (GET_MODE (x)) <= UNITS_PER_WORD && SCALAR_INT_MODE_P (GET_MODE (x)) + && TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (mode), + GET_MODE_BITSIZE (GET_MODE (x))) && ! no_new_pseudos) return gen_lowpart (mode, force_reg (GET_MODE (x), x)); |
