diff options
| author | Richard Sandiford <rdsandiford@googlemail.com> | 2008-11-11 23:23:23 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2008-11-11 23:23:23 +0000 |
| commit | 2f1e2391d8d60d887cfffe7d7b619ea2eff82f66 (patch) | |
| tree | 4d810b4b30d1bbc66dec48c7363f8c9f1f5358a3 /gcc/simplify-rtx.c | |
| parent | 5dbd125c5c3e1e45dfa6710224743e74c4c40622 (diff) | |
| download | gcc-2f1e2391d8d60d887cfffe7d7b619ea2eff82f66.tar.gz | |
re PR rtl-optimization/37363 (Fix for PR 36090 causes libstdc++ regressions)
gcc/
PR rtl-optimization/37363
* simplify-rtx.c (simplify_plus_minus): Don't create (const (minus ...))
expresisons.
From-SVN: r141774
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index c7cd2189646..dd91e120d23 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -3678,24 +3678,6 @@ 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)) |