diff options
| author | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-07-10 18:51:20 +0000 |
|---|---|---|
| committer | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-07-10 18:51:20 +0000 |
| commit | 621a189cdf6ef077bb828c950bc0d561eca0b8f3 (patch) | |
| tree | 1fb2ff706d619a9822938fad912ec418d76d923b /gcc | |
| parent | bfb2681d09df50cc9a301e4ebb38a9c3a2107d4b (diff) | |
| download | gcc-621a189cdf6ef077bb828c950bc0d561eca0b8f3.tar.gz | |
* combine.c (gen_lowpart_for_combine): Handle vector modes.
Supply non-VOID mode to simplify_gen_subreg.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@55375 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/combine.c | 16 |
2 files changed, 13 insertions, 8 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2db2b0cb4bd..a71d09dcf5c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Wed Jul 10 19:50:03 2002 J"orn Rennecke <joern.rennecke@superh.com> + + * combine.c (gen_lowpart_for_combine): Handle vector modes. + Supply non-VOID mode to simplify_gen_subreg. + Wed Jul 10 18:48:55 CEST 2002 Jan Hubicka <jh@suse.cz> * i386.c (ix86_init_mmx_sse_builtins): Fix thinko. diff --git a/gcc/combine.c b/gcc/combine.c index 646abec2e99..f9d4b406254 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -9831,12 +9831,6 @@ gen_lowpart_for_combine (mode, x) || GET_MODE_SIZE (GET_MODE (x)) == GET_MODE_SIZE (mode))) return gen_rtx_CLOBBER (GET_MODE (x), const0_rtx); - /* simplify_gen_subreg does not know how to handle the case where we try - to convert an integer constant to a vector. - ??? We could try to teach it to generate CONST_VECTORs. */ - if (GET_MODE (x) == VOIDmode && VECTOR_MODE_P (mode)) - return gen_rtx_CLOBBER (GET_MODE (x), const0_rtx); - /* X might be a paradoxical (subreg (mem)). In that case, gen_lowpart won't know what to do. So we will strip off the SUBREG here and process normally. */ @@ -9903,9 +9897,15 @@ gen_lowpart_for_combine (mode, x) { int offset = 0; rtx res; + enum machine_mode sub_mode = GET_MODE (x); - offset = subreg_lowpart_offset (mode, GET_MODE (x)); - res = simplify_gen_subreg (mode, x, GET_MODE (x), offset); + offset = subreg_lowpart_offset (mode, sub_mode); + if (sub_mode == VOIDmode) + { + sub_mode = int_mode_for_mode (mode); + x = gen_lowpart_common (sub_mode, x); + } + res = simplify_gen_subreg (mode, x, sub_mode, offset); if (res) return res; return gen_rtx_CLOBBER (GET_MODE (x), const0_rtx); |