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| author | Jeffrey A Law <law@cygnus.com> | 1998-07-06 21:45:51 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1998-07-06 15:45:51 -0600 |
| commit | fcc60894b89947e0fb4a0833d6c99a7c20cf6e63 (patch) | |
| tree | d0565120ed21fe72d849513ec5e0d294ec102450 /gcc | |
| parent | c6e9ab63a8210b09fee86b937e4274eb6d57841f (diff) | |
| download | gcc-fcc60894b89947e0fb4a0833d6c99a7c20cf6e63.zip gcc-fcc60894b89947e0fb4a0833d6c99a7c20cf6e63.tar.gz gcc-fcc60894b89947e0fb4a0833d6c99a7c20cf6e63.tar.bz2 | |
combine.c (expand_compound_operation): Fix thinko in code to optimize (zero_extend:DI (subreg:SI (foo:DI) 0)) to foo:DI.
* combine.c (expand_compound_operation): Fix thinko in code to optimize
(zero_extend:DI (subreg:SI (foo:DI) 0)) to foo:DI.
From-SVN: r20966
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/combine.c | 2 |
2 files changed, 4 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 073aadb..275b162 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -21,6 +21,9 @@ Mon Jul 6 22:09:32 1998 Ian Lance Taylor <ian@cygnus.com> Mon Jul 6 21:28:14 1998 Jeffrey A Law (law@cygnus.com) + * combine.c (expand_compound_operation): Fix thinko in code to optimize + (zero_extend:DI (subreg:SI (foo:DI) 0)) to foo:DI. + * Disable the following change from gcc2. Not appropriate for egcs: Sun Jun 7 09:30:31 1998 Richard Kenner <kenner@vlsi1.ultra.nyu.edu> diff --git a/gcc/combine.c b/gcc/combine.c index a299fb0..155585b 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -5203,7 +5203,7 @@ expand_compound_operation (x) && subreg_lowpart_p (XEXP (x, 0)) && GET_MODE_BITSIZE (GET_MODE (x)) <= HOST_BITS_PER_WIDE_INT && (nonzero_bits (SUBREG_REG (XEXP (x, 0)), GET_MODE (x)) - & ~ GET_MODE_MASK (GET_MODE (SUBREG_REG (x)))) == 0) + & ~ GET_MODE_MASK (GET_MODE (XEXP (x, 0)))) == 0) return SUBREG_REG (XEXP (x, 0)); /* (zero_extend:DI (truncate:SI foo:DI)) is just foo:DI when foo |