From 1ec7a83137275efef6050bb652ac57af2ce05f8e Mon Sep 17 00:00:00 2001 From: James E Wilson Date: Thu, 11 Dec 2003 19:04:07 +0000 Subject: 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 --- gcc/ChangeLog | 6 ++++++ gcc/function.c | 12 +++++++++++- 2 files changed, 17 insertions(+), 1 deletion(-) (limited to 'gcc') diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7264d56..e05d2af 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2003-12-11 James E Wilson + + PR target/13132 + * function.c (gen_mem_addressof): When no decl, explicitly clear flag + bits. + 2003-12-12 Nick Clifton * config/m32r/m32r.c: Convert to ISO-C 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; } -- cgit v1.1