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| author | Richard Kenner <kenner@vlsi1.ultra.nyu.edu> | 2001-10-19 19:54:06 +0000 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 2001-10-19 15:54:06 -0400 |
| commit | 03bf2c237c6288caef6e014895f989f963b9f711 (patch) | |
| tree | eb97caf1841ebd1fecf7e7517af209b7ec0318b7 /gcc/expr.c | |
| parent | 91ea4f8ddfb30a1274e951d43ac4d79eb5c63e9e (diff) | |
| download | gcc-03bf2c237c6288caef6e014895f989f963b9f711.tar.gz | |
langhooks.h (LANG_HOOKS_HONOR_READONLY): New macro.
* langhooks.h (LANG_HOOKS_HONOR_READONLY): New macro.
* toplev.h (struct lang_hooks): New field HONOR_READONLY.
* emit-rtl.c (set_mem_attributes): Set RTX_UNCHANGING_P from
TREE_READONLY and TYPE_READONLY if lang_hooks.honor_readonly.
Set alignment from type if INDIRECT_REF.
(adjust_address_1, offset_address): Simplify alignment compuitation.
* expr.c (expand_expr, case INDIRECT_REF): Don't set RTX_UNCHANGING_P
here; done by set_mem_attributes.
From-SVN: r46361
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/gcc/expr.c b/gcc/expr.c index f486b32e4fd..3290b39496d 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -6812,13 +6812,6 @@ expand_expr (exp, target, tmode, modifier) temp = gen_rtx_MEM (mode, op0); set_mem_attributes (temp, exp, 0); - /* It is incorrect to set RTX_UNCHANGING_P from TREE_READONLY - here, because, in C and C++, the fact that a location is accessed - through a pointer to const does not mean that the value there can - never change. Languages where it can never change should - also set TREE_STATIC. */ - RTX_UNCHANGING_P (temp) = TREE_READONLY (exp) & TREE_STATIC (exp); - /* If we are writing to this object and its type is a record with readonly fields, we must mark it as readonly so it will conflict with readonly references to those fields. */ |