diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0365-gcc.patch')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0365-gcc.patch | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0365-gcc.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0365-gcc.patch new file mode 100644 index 000000000..378076392 --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0365-gcc.patch @@ -0,0 +1,125 @@ +From 158892fce220b03d3fe3d8d7656e1b0786609283 Mon Sep 17 00:00:00 2001 +From: rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Sun, 29 May 2011 17:47:51 +0000 +Subject: [PATCH] gcc/ + PR target/43995 + * config/mips/mips.c (mips_pic_call_symbol_from_set): Add a + recurse_p argument. Only follow register copies if it is set, + and prevent mips_find_pic_call_symbol from recursing. + (mips_find_pic_call_symbol): Add a recurse_p argument. + Pass it to mips_pic_call_symbol_from_set. + (mips_annotate_pic_calls): Update accordingly. + +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174404 138bc75d-0d04-0410-961f-82ee72b054a4 + +index 9de479b..027fc2d 100644 +--- a/gcc/config/mips/mips.c ++++ b/gcc/config/mips/mips.c +@@ -1186,7 +1186,7 @@ static const struct mips_rtx_cost_data + } + }; + +-static rtx mips_find_pic_call_symbol (rtx, rtx); ++static rtx mips_find_pic_call_symbol (rtx, rtx, bool); + static int mips_register_move_cost (enum machine_mode, reg_class_t, + reg_class_t); + static unsigned int mips_function_arg_boundary (enum machine_mode, const_tree); +@@ -14160,12 +14160,16 @@ mips_call_expr_from_insn (rtx insn, rtx *second_call) + } + + /* REG is set in DEF. See if the definition is one of the ways we load a +- register with a symbol address for a mips_use_pic_fn_addr_reg_p call. If +- it is return the symbol reference of the function, otherwise return +- NULL_RTX. */ ++ register with a symbol address for a mips_use_pic_fn_addr_reg_p call. ++ If it is, return the symbol reference of the function, otherwise return ++ NULL_RTX. ++ ++ If RECURSE_P is true, use mips_find_pic_call_symbol to interpret ++ the values of source registers, otherwise treat such registers as ++ having an unknown value. */ + + static rtx +-mips_pic_call_symbol_from_set (df_ref def, rtx reg) ++mips_pic_call_symbol_from_set (df_ref def, rtx reg, bool recurse_p) + { + rtx def_insn, set; + +@@ -14192,21 +14196,39 @@ mips_pic_call_symbol_from_set (df_ref def, rtx reg) + return symbol; + } + +- /* Follow simple register copies. */ +- if (REG_P (src)) +- return mips_find_pic_call_symbol (def_insn, src); ++ /* Follow at most one simple register copy. Such copies are ++ interesting in cases like: ++ ++ for (...) ++ { ++ locally_binding_fn (...); ++ } ++ ++ and: ++ ++ locally_binding_fn (...); ++ ... ++ locally_binding_fn (...); ++ ++ where the load of locally_binding_fn can legitimately be ++ hoisted or shared. However, we do not expect to see complex ++ chains of copies, so a full worklist solution to the problem ++ would probably be overkill. */ ++ if (recurse_p && REG_P (src)) ++ return mips_find_pic_call_symbol (def_insn, src, false); + } + + return NULL_RTX; + } + +-/* Find the definition of the use of REG in INSN. See if the definition is +- one of the ways we load a register with a symbol address for a +- mips_use_pic_fn_addr_reg_p call. If it is return the symbol reference of +- the function, otherwise return NULL_RTX. */ ++/* Find the definition of the use of REG in INSN. See if the definition ++ is one of the ways we load a register with a symbol address for a ++ mips_use_pic_fn_addr_reg_p call. If it is return the symbol reference ++ of the function, otherwise return NULL_RTX. RECURSE_P is as for ++ mips_pic_call_symbol_from_set. */ + + static rtx +-mips_find_pic_call_symbol (rtx insn, rtx reg) ++mips_find_pic_call_symbol (rtx insn, rtx reg, bool recurse_p) + { + df_ref use; + struct df_link *defs; +@@ -14218,7 +14240,7 @@ mips_find_pic_call_symbol (rtx insn, rtx reg) + defs = DF_REF_CHAIN (use); + if (!defs) + return NULL_RTX; +- symbol = mips_pic_call_symbol_from_set (defs->ref, reg); ++ symbol = mips_pic_call_symbol_from_set (defs->ref, reg, recurse_p); + if (!symbol) + return NULL_RTX; + +@@ -14227,7 +14249,7 @@ mips_find_pic_call_symbol (rtx insn, rtx reg) + { + rtx other; + +- other = mips_pic_call_symbol_from_set (defs->ref, reg); ++ other = mips_pic_call_symbol_from_set (defs->ref, reg, recurse_p); + if (!rtx_equal_p (symbol, other)) + return NULL_RTX; + } +@@ -14298,7 +14320,7 @@ mips_annotate_pic_calls (void) + if (!REG_P (reg)) + continue; + +- symbol = mips_find_pic_call_symbol (insn, reg); ++ symbol = mips_find_pic_call_symbol (insn, reg, true); + if (symbol) + { + mips_annotate_pic_call_expr (call, symbol); +-- +1.7.0.4 + |