diff options
| author | James E Wilson <wilson@specifixinc.com> | 2003-12-11 19:04:07 +0000 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 2003-12-11 11:04:07 -0800 |
| commit | 1ec7a83137275efef6050bb652ac57af2ce05f8e (patch) | |
| tree | 10bc58864ba022fa4eec97364c57606ab6d548a4 /gcc/function.c | |
| parent | a9f4e3d2443f96ef52e9dab4bf99206c9570bb3a (diff) | |
| download | gcc-1ec7a83137275efef6050bb652ac57af2ce05f8e.zip gcc-1ec7a83137275efef6050bb652ac57af2ce05f8e.tar.gz gcc-1ec7a83137275efef6050bb652ac57af2ce05f8e.tar.bz2 | |
Fix for problem with unnecessary volatile mems.
PR target/13132
* function.c (gen_mem_addressof): When no decl, explicitly clear flag
bits.
From-SVN: r74543
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/gcc/function.c b/gcc/function.c index 2f6fb9b..7ae19d5 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -2868,7 +2868,17 @@ gen_mem_addressof (rtx reg, tree decl, int rescan) fixup_var_refs (reg, GET_MODE (reg), TREE_UNSIGNED (type), reg, 0); } else if (rescan) - fixup_var_refs (reg, GET_MODE (reg), 0, reg, 0); + { + /* This can only happen during reload. Clear the same flag bits as + reload. */ + MEM_VOLATILE_P (reg) = 0; + RTX_UNCHANGING_P (reg) = 0; + MEM_IN_STRUCT_P (reg) = 0; + MEM_SCALAR_P (reg) = 0; + MEM_ATTRS (reg) = 0; + + fixup_var_refs (reg, GET_MODE (reg), 0, reg, 0); + } return reg; } |