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| author | Greg McGary <gkm@gnu.org> | 1998-04-17 16:35:07 +0000 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 1998-04-17 09:35:07 -0700 |
| commit | 6cca74ab23bd2c431e11461ae42dada84dc667bc (patch) | |
| tree | cc6c41ce1ae9c962e9c0a5be1f3ed22e9ea29a10 /gcc/emit-rtl.c | |
| parent | 4daa9c14297ebb5fb84a1f47510ef102f805593c (diff) | |
| download | gcc-6cca74ab23bd2c431e11461ae42dada84dc667bc.zip gcc-6cca74ab23bd2c431e11461ae42dada84dc667bc.tar.gz gcc-6cca74ab23bd2c431e11461ae42dada84dc667bc.tar.bz2 | |
* emit-rtl.c (gen_highpart): initialize `word' properly for pseudo.
From-SVN: r19271
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index 40b0aa5..aafc41c 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -1011,18 +1011,24 @@ gen_highpart (mode, x) } else if (GET_CODE (x) == REG) { - int word = 0; + int word; /* Let the backend decide how many registers to skip. This is needed in particular for sparc64 where fp regs are smaller than a word. */ /* ??? Note that subregs are now ambiguous, in that those against - pseudos are sized by the Word Size, while those against hard + pseudos are sized by the word size, while those against hard regs are sized by the underlying register size. Better would be to always interpret the subreg offset parameter as bytes or bits. */ - if (! WORDS_BIG_ENDIAN && REGNO (x) < FIRST_PSEUDO_REGISTER) + if (WORDS_BIG_ENDIAN) + word = 0; + else if (REGNO (x) < FIRST_PSEUDO_REGISTER) word = (HARD_REGNO_NREGS (REGNO (x), GET_MODE (x)) - HARD_REGNO_NREGS (REGNO (x), mode)); + else + word = ((GET_MODE_SIZE (GET_MODE (x)) + - MAX (GET_MODE_SIZE (mode), UNITS_PER_WORD)) + / UNITS_PER_WORD); if (REGNO (x) < FIRST_PSEUDO_REGISTER /* integrate.c can't handle parts of a return value register. */ |