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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-01-12 07:38:50 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-01-12 07:38:50 +0000 |
| commit | d65bfb461599fd7c4955506d6564cc688d225dd4 (patch) | |
| tree | 6e49502e0e9256ec42a5a6d46cd5051705961257 /gcc/simplify-rtx.c | |
| parent | 43db90039cdc4aeb79248a88353a237905050038 (diff) | |
| download | gcc-d65bfb461599fd7c4955506d6564cc688d225dd4.tar.gz | |
* config/i386/mmintrin.h: New file.
* config/i386/xmmintrin.h: New file.
* config.gcc (i?86-*-*): Add extra_headers.
* simplify-rtx.c (simplify_unary_operation): Handle saturating
truncation codes.
(simplify_binary_operation): Handle saturating arithmetic codes.
* config/i386/i386.c (ix86_expand_sse_comi): Return the full result,
not the lowpart subreg.
(ix86_expand_builtin): Return a TImode dummy register instead of 0
on error.
* config/i386/i386.md (mmx_clrdi): Override memory attribute.
* gcc.dg/i386-mmx-1.c, gcc.dg/i386-mmx-2.c: New.
* gcc.dg/i386-sse-1.c, gcc.dg/i386-sse-2.c, gcc.dg/i386-sse-1.c: New.
CVs: ----------------------------------------------------------------------
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@48793 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 84a9ce95ffa..2db3ec0f7be 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -572,6 +572,8 @@ simplify_unary_operation (code, mode, op, op_mode) case SQRT: case FLOAT_EXTEND: case FLOAT_TRUNCATE: + case SS_TRUNCATE: + case US_TRUNCATE: return 0; default: @@ -1524,6 +1526,13 @@ simplify_binary_operation (code, mode, op0, op1) return op0; break; + case SS_PLUS: + case US_PLUS: + case SS_MINUS: + case US_MINUS: + /* ??? There are simplifications that can be done. */ + return 0; + default: abort (); } |