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fold-const.c (fold_convert): When casting an expression to void...

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* fold-const.c (fold_convert): When casting an expression to void,
	fold_ignored_result may discover a GIMPLE_MODIFY_STMT which doesn't
	have a type.  Instead of attempting to build a NOP_EXPR, return
	these "special" trees directly.

From-SVN: r120451
This commit is contained in:
Roger Sayle 2007-01-04 23:00:00 +00:00 committed by Roger Sayle
parent 7fd453b4a2
commit bd7e4636d9
2 changed files with 11 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2007-01-04 Roger Sayle <roger@eyesopen.com>
* fold-const.c (fold_convert): When casting an expression to void,
fold_ignored_result may discover a GIMPLE_MODIFY_STMT which doesn't
have a type. Instead of attempting to build a NOP_EXPR, return
these "special" trees directly.
2007-01-04 Joseph Myers <joseph@codesourcery.com>
* config/rs6000/rs6000.c (rs6000_rtx_costs): Make adjustment for

5
gcc/fold-const.c
View File

@ -2144,7 +2144,10 @@ fold_convert (tree type, tree arg)
return fold_build1 (VIEW_CONVERT_EXPR, type, arg);
case VOID_TYPE:
return fold_build1 (NOP_EXPR, type, fold_ignored_result (arg));
tem = fold_ignored_result (arg);
if (TREE_CODE (tem) == GIMPLE_MODIFY_STMT)
return tem;
return fold_build1 (NOP_EXPR, type, tem);
default:
gcc_unreachable ();