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authorChao-ying Fu <fu@mips.com>2013-10-18 21:14:25 +0000
committerChao-ying Fu <fu@mips.com>2013-10-18 21:14:25 +0000
commit9d5de888d6a44545ba0e468597a6c6b1423c7e78 (patch)
tree8daf27b88e63e92351b2cbea336e85c3c26807dc /gas/config/tc-mips.c
parentbb6216d89885847997d54942e984eeb8696fed61 (diff)
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2013-10-18 Chao-ying Fu <Chao-ying.Fu@imgtec.com>
* config/tc-mips.c (fpr_read_mask): Test MSA registers. (fpr_write_mask): Test MSA registers. (can_swap_branch_p): Check fpr write followed by fpr read.
Diffstat (limited to 'gas/config/tc-mips.c')
-rw-r--r--gas/config/tc-mips.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index 5741d3e..08ad7ba 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -4161,7 +4161,8 @@ fpr_read_mask (const struct mips_cl_insn *ip)
unsigned long pinfo;
unsigned int mask;
- mask = insn_reg_mask (ip, (1 << OP_REG_FP) | (1 << OP_REG_VEC),
+ mask = insn_reg_mask (ip, ((1 << OP_REG_FP) | (1 << OP_REG_VEC)
+ | (1 << OP_REG_MSA)),
insn_read_mask (ip->insn_mo));
pinfo = ip->insn_mo->pinfo;
/* Conservatively treat all operands to an FP_D instruction are doubles.
@@ -4179,7 +4180,8 @@ fpr_write_mask (const struct mips_cl_insn *ip)
unsigned long pinfo;
unsigned int mask;
- mask = insn_reg_mask (ip, (1 << OP_REG_FP) | (1 << OP_REG_VEC),
+ mask = insn_reg_mask (ip, ((1 << OP_REG_FP) | (1 << OP_REG_VEC)
+ | (1 << OP_REG_MSA)),
insn_write_mask (ip->insn_mo));
pinfo = ip->insn_mo->pinfo;
/* Conservatively treat all operands to an FP_D instruction are doubles.
@@ -6070,6 +6072,7 @@ can_swap_branch_p (struct mips_cl_insn *ip, expressionS *address_expr,
{
unsigned long pinfo, pinfo2, prev_pinfo, prev_pinfo2;
unsigned int gpr_read, gpr_write, prev_gpr_read, prev_gpr_write;
+ unsigned int fpr_read, prev_fpr_write;
/* -O2 and above is required for this optimization. */
if (mips_optimize < 2)
@@ -6144,6 +6147,11 @@ can_swap_branch_p (struct mips_cl_insn *ip, expressionS *address_expr,
if (gpr_read & prev_gpr_write)
return FALSE;
+ fpr_read = fpr_read_mask (ip);
+ prev_fpr_write = fpr_write_mask (&history[0]);
+ if (fpr_read & prev_fpr_write)
+ return FALSE;
+
/* If the branch writes a register that the previous
instruction sets, we can not swap. */
gpr_write = gpr_write_mask (ip);