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* config/tc-mips.c (append_insn): For mips16, insert a nop between
a read of HI or LO and an immediatly following branch.
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@ -1,3 +1,8 @@
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1998-12-29 Gavin Romig-Koch <gavin@cygnus.com>
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* config/tc-mips.c (append_insn): For mips16, insert a nop between
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a read of HI or LO and an immediatly following branch.
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1998-12-29 Gavin Romig-Koch <gavin@cygnus.com>
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* config/tc-mips.c (md_begin): Another correction to the setting of
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@ -1689,6 +1689,16 @@ append_insn (place, ip, address_expr, reloc_type, unmatched_hi)
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&& (mips_optimize == 0
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|| (pinfo & INSN_WRITE_LO)))
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nops += 2;
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/* Most mips16 branch insns don't have a delay slot.
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If a read from LO is immediately followed by a branch
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to a write to LO we have a read followed by a write
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less than 2 insns away. We assume the target of
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a branch might be a write to LO, and insert a nop
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between a read and an immediately following branch. */
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else if (mips_opts.mips16
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&& (mips_optimize == 0
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|| (pinfo & MIPS16_INSN_BRANCH)))
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nops += 1;
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}
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else if (prev_insn.insn_mo->pinfo & INSN_READ_HI)
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{
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@ -1701,6 +1711,16 @@ append_insn (place, ip, address_expr, reloc_type, unmatched_hi)
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&& (mips_optimize == 0
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|| (pinfo & INSN_WRITE_HI)))
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nops += 2;
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/* Most mips16 branch insns don't have a delay slot.
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If a read from HI is immediately followed by a branch
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to a write to HI we have a read followed by a write
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less than 2 insns away. We assume the target of
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a branch might be a write to HI, and insert a nop
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between a read and an immediately following branch. */
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else if (mips_opts.mips16
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&& (mips_optimize == 0
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|| (pinfo & MIPS16_INSN_BRANCH)))
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nops += 1;
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}
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/* If the previous instruction was in a noreorder section, then
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