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| author | Eric Botcazou <ebotcazou@adacore.com> | 2012-12-16 10:02:37 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2012-12-16 10:02:37 +0000 |
| commit | 1bae867a84abddcbd146f0a8b5d82426c3bb8a46 (patch) | |
| tree | 179de2976b53f6f09f786013b2b4078605c8459c | |
| parent | 0e76460fddde9192e21f1a00c52bdb977153d7c8 (diff) | |
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re PR rtl-optimization/55630 (FAIL: g++.dg/pr48660.C -std=c++98 (internal compiler error))
PR rtl-optimization/55630
* expr.c (expand_assignment): Do not call copy_blkmode_to_reg to move
BLKmode return values to the return register.
From-SVN: r194530
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/expr.c | 7 |
2 files changed, 12 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4b5d926..7156bc6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2012-12-16 Eric Botcazou <ebotcazou@adacore.com> + + PR rtl-optimization/55630 + * expr.c (expand_assignment): Do not call copy_blkmode_to_reg to move + BLKmode return values to the return register. + 2012-12-15 Alexandre Oliva <aoliva@redhat.com> PR libmudflap/53952 @@ -4947,7 +4947,12 @@ expand_assignment (tree to, tree from, bool nontemporal) rtx temp; push_temp_slots (); - if (REG_P (to_rtx) && TYPE_MODE (TREE_TYPE (from)) == BLKmode) + + /* If the source is itself a return value, it still is in a pseudo at + this point so we can move it back to the return register directly. */ + if (REG_P (to_rtx) + && TYPE_MODE (TREE_TYPE (from)) == BLKmode + && TREE_CODE (from) != CALL_EXPR) temp = copy_blkmode_to_reg (GET_MODE (to_rtx), from); else temp = expand_expr (from, NULL_RTX, GET_MODE (to_rtx), EXPAND_NORMAL); |