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| author | Richard Kenner <kenner@vlsi1.ultra.nyu.edu> | 2000-10-20 20:57:21 +0000 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 2000-10-20 16:57:21 -0400 |
| commit | 235783d1f06a6107df508d57e1fd462220583afa (patch) | |
| tree | 0a6fc6a8a2eadc64eb528baac5aba3b8271e3eed /gcc/expr.c | |
| parent | 948068e2ed9b6f34dc92cff5b6e846406f4b3a7e (diff) | |
| download | gcc-235783d1f06a6107df508d57e1fd462220583afa.zip gcc-235783d1f06a6107df508d57e1fd462220583afa.tar.gz gcc-235783d1f06a6107df508d57e1fd462220583afa.tar.bz2 | |
expr.c (expand_expr, [...]): Set RTX_UNCHANGING_P on returned MEM.
* expr.c (expand_expr, case SAVE_EXPR): Set RTX_UNCHANGING_P on
returned MEM.
(expand_expr_unaligned, case ARRAY_REF): Check that index is
a constant before comparing it; use tree_low_cst.
* tree.c (save_expr): Set TREE_READONLY.
(substitute_expr): Return inside of NON_LVALUE_EXPR.
(build, build1): Set TREE_READONLY if all operands are.
(build_index_type): If upper bound is a negative number, lower
bound is zero and sizetype is unsigned, use upper bound of one and
lower of zero.
From-SVN: r36979
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -6222,7 +6222,11 @@ expand_expr (exp, target, tmode, modifier) if (mode == VOIDmode) temp = const0_rtx; else - temp = assign_temp (type, 3, 0, 0); + { + temp = assign_temp (type, 3, 0, 0); + if (GET_CODE (temp) == MEM) + RTX_UNCHANGING_P (temp) = 1; + } SAVE_EXPR_RTL (exp) = temp; if (!optimize && GET_CODE (temp) == REG) @@ -8683,6 +8687,7 @@ expand_expr_unaligned (exp, palign) that was declared const. */ if (TREE_CODE (array) == CONSTRUCTOR && ! TREE_SIDE_EFFECTS (array) + && host_integerp (index, 0) && 0 > compare_tree_int (index, list_length (CONSTRUCTOR_ELTS (TREE_OPERAND (exp, 0))))) @@ -8690,7 +8695,7 @@ expand_expr_unaligned (exp, palign) tree elem; for (elem = CONSTRUCTOR_ELTS (TREE_OPERAND (exp, 0)), - i = TREE_INT_CST_LOW (index); + i = tree_low_cst (index, 0); elem != 0 && i != 0; i--, elem = TREE_CHAIN (elem)) ; |