diff options
Diffstat (limited to 'toolchain/gcc/patches/4.1.2')
| -rw-r--r-- | toolchain/gcc/patches/4.1.2/953-bug_33256.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/toolchain/gcc/patches/4.1.2/953-bug_33256.patch b/toolchain/gcc/patches/4.1.2/953-bug_33256.patch new file mode 100644 index 0000000000..6388e47b0a --- /dev/null +++ b/toolchain/gcc/patches/4.1.2/953-bug_33256.patch @@ -0,0 +1,54 @@ +http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33256 + +--- a/gcc/config/mips/mips.c ++++ b/gcc/config/mips/mips.c +@@ -1252,6 +1252,20 @@ mips_split_const (rtx x, rtx *base, HOST + *base = x; + } + ++/* Classify symbolic expression X, given that it appears in context ++ CONTEXT. */ ++ ++static enum mips_symbol_type ++mips_classify_symbolic_expression (rtx x) ++{ ++ HOST_WIDE_INT offset; ++ ++ mips_split_const (x, &x, &offset); ++ if (UNSPEC_ADDRESS_P (x)) ++ return UNSPEC_ADDRESS_TYPE (x); ++ ++ return mips_classify_symbol (x); ++} + + /* Return true if SYMBOL is a SYMBOL_REF and OFFSET + SYMBOL points + to the same object as SYMBOL. */ +@@ -1493,8 +1507,17 @@ mips_classify_address (struct mips_addre + info->type = ADDRESS_LO_SUM; + info->reg = XEXP (x, 0); + info->offset = XEXP (x, 1); ++ /* We have to trust the creator of the LO_SUM to do something vaguely ++ sane. Target-independent code that creates a LO_SUM should also ++ create and verify the matching HIGH. Target-independent code that ++ adds an offset to a LO_SUM must prove that the offset will not ++ induce a carry. Failure to do either of these things would be ++ a bug, and we are not required to check for it here. The MIPS ++ backend itself should only create LO_SUMs for valid symbolic ++ constants, with the high part being either a HIGH or a copy ++ of _gp. */ ++ info->symbol_type = mips_classify_symbolic_expression (info->offset); + return (mips_valid_base_register_p (info->reg, mode, strict) +- && mips_symbolic_constant_p (info->offset, &info->symbol_type) + && mips_symbolic_address_p (info->symbol_type, mode) + && mips_lo_relocs[info->symbol_type] != 0); + +@@ -5575,7 +5598,8 @@ print_operand_reloc (FILE *file, rtx op, + rtx base; + HOST_WIDE_INT offset; + +- if (!mips_symbolic_constant_p (op, &symbol_type) || relocs[symbol_type] == 0) ++ symbol_type = mips_classify_symbolic_expression (op); ++ if (relocs[symbol_type] == 0) + fatal_insn ("PRINT_OPERAND, invalid operand for relocation", op); + + /* If OP uses an UNSPEC address, we want to print the inner symbol. */ |