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| 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 | |
| parent | 5dbd125c5c3e1e45dfa6710224743e74c4c40622 (diff) | |
| download | gcc-2f1e2391d8d60d887cfffe7d7b619ea2eff82f66.zip gcc-2f1e2391d8d60d887cfffe7d7b619ea2eff82f66.tar.gz gcc-2f1e2391d8d60d887cfffe7d7b619ea2eff82f66.tar.bz2 | |
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
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/simplify-rtx.c | 18 |
2 files changed, 6 insertions, 18 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2d5803f..4fee1bb 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2008-11-11 Richard Sandiford <rdsandiford@googlemail.com> + + PR rtl-optimization/37363 + * simplify-rtx.c (simplify_plus_minus): Don't create (const (minus ...)) + expresisons. + 2008-11-11 Eric Botcazou <ebotcazou@adacore.com> * ira-lives.c (process_bb_node_lives): Restore EH_RETURN_DATA_REGNO diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index c7cd218..dd91e12 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)) |