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| author | Paolo Bonzini <bonzini@gnu.org> | 2008-05-08 16:35:56 +0000 |
|---|---|---|
| committer | David Edelsohn <dje@gcc.gnu.org> | 2008-05-08 12:35:56 -0400 |
| commit | 627ab8616cc19a4bed7ca2d4273e3dc85aab39b4 (patch) | |
| tree | a31c9e164e9c5d56daddb94bd73cc84979190e8a /gcc/simplify-rtx.c | |
| parent | 41ccb5d1b1c83fabd2d0411d8a2c49168518f4bb (diff) | |
| download | gcc-627ab8616cc19a4bed7ca2d4273e3dc85aab39b4.zip gcc-627ab8616cc19a4bed7ca2d4273e3dc85aab39b4.tar.gz gcc-627ab8616cc19a4bed7ca2d4273e3dc85aab39b4.tar.bz2 | |
re PR target/36090 (ppc64 cacoshl miscompilation)
2008-05-08 Paolo Bonzini <bonzini@gnu.org>
PR target/36090
* simplify-rtx.c (simplify_plus_minus): Create CONST of
similar RTX_CONST_OBJ before CONST_INT.
From-SVN: r135086
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 44f3ef5..15e4c2a 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -3674,6 +3674,24 @@ simplify_plus_minus (enum rtx_code code, enum machine_mode mode, rtx op0, one CONST_INT, and the sort will have ensured that it is last in the array and that any other constant will be next-to-last. */ + if (GET_CODE (ops[n_ops - 1].op) == CONST_INT) + i = n_ops - 2; + else + i = n_ops - 1; + + if (i >= 1 + && ops[i].neg + && !ops[i - 1].neg + && CONSTANT_P (ops[i].op) + && GET_CODE (ops[i].op) == GET_CODE (ops[i - 1].op)) + { + ops[i - 1].op = gen_rtx_MINUS (mode, ops[i - 1].op, ops[i].op); + ops[i - 1].op = gen_rtx_CONST (mode, ops[i - 1].op); + if (i < n_ops - 1) + ops[i] = ops[i + 1]; + n_ops--; + } + if (n_ops > 1 && GET_CODE (ops[n_ops - 1].op) == CONST_INT && CONSTANT_P (ops[n_ops - 2].op)) |