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tcg-ia64: Reduce code duplication in tcg_out_qemu_ld 

The only differences were in the bswap insns emitted.

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-09-05 20:50:54 -04:00
parent 1f91f39219
commit af9fe31070
1 changed files with 24 additions and 37 deletions
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61
tcg/ia64/tcg-target.c
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@ -1647,13 +1647,13 @@ static inline void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
OPC_LD1_M1, OPC_LD2_M1, OPC_LD4_M1, OPC_LD8_M1
};
int addr_reg, data_reg, mem_index;
TCGMemOp s_bits, bswap;
TCGMemOp s_bits;
uint64_t bswap1, bswap2;
data_reg = *args++;
addr_reg = *args++;
mem_index = *args;
s_bits = opc & MO_SIZE;
bswap = opc & MO_BSWAP;
/* Read the TLB entry */
tcg_out_qemu_tlb(s, addr_reg, s_bits,
@ -1662,6 +1662,18 @@ static inline void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
INSN_NOP_I, INSN_NOP_I);
/* P6 is the fast path, and P7 the slow path */
bswap1 = bswap2 = INSN_NOP_I;
if (opc & MO_BSWAP) {
bswap1 = tcg_opc_bswap64_i(TCG_REG_P6, TCG_REG_R8, TCG_REG_R8);
if (s_bits < MO_64) {
int shift = 64 - (8 << s_bits);
bswap2 = (opc & MO_SIGN ? OPC_EXTR_I11 : OPC_EXTR_U_I11);
bswap2 = tcg_opc_i11(TCG_REG_P6, bswap2,
TCG_REG_R8, TCG_REG_R8, shift, 63 - shift);
}
}
tcg_out_bundle(s, mLX,
tcg_opc_mov_a(TCG_REG_P7, TCG_REG_R56, TCG_AREG0),
tcg_opc_l2 ((tcg_target_long) qemu_ld_helpers[s_bits]),
@ -1674,41 +1686,16 @@ static inline void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args,
TCG_REG_R2, TCG_REG_R57),
tcg_opc_i21(TCG_REG_P7, OPC_MOV_I21, TCG_REG_B6,
TCG_REG_R3, 0));
if (bswap && s_bits == MO_16) {
tcg_out_bundle(s, MmI,
tcg_opc_m1 (TCG_REG_P6, opc_ld_m1[s_bits],
TCG_REG_R8, TCG_REG_R2),
tcg_opc_m1 (TCG_REG_P7, OPC_LD8_M1, TCG_REG_R1, TCG_REG_R2),
tcg_opc_i12(TCG_REG_P6, OPC_DEP_Z_I12,
TCG_REG_R8, TCG_REG_R8, 15, 15));
} else if (bswap && s_bits == MO_32) {
tcg_out_bundle(s, MmI,
tcg_opc_m1 (TCG_REG_P6, opc_ld_m1[s_bits],
TCG_REG_R8, TCG_REG_R2),
tcg_opc_m1 (TCG_REG_P7, OPC_LD8_M1, TCG_REG_R1, TCG_REG_R2),
tcg_opc_i12(TCG_REG_P6, OPC_DEP_Z_I12,
TCG_REG_R8, TCG_REG_R8, 31, 31));
} else {
tcg_out_bundle(s, mmI,
tcg_opc_m1 (TCG_REG_P6, opc_ld_m1[s_bits],
TCG_REG_R8, TCG_REG_R2),
tcg_opc_m1 (TCG_REG_P7, OPC_LD8_M1, TCG_REG_R1, TCG_REG_R2),
INSN_NOP_I);
}
if (!bswap) {
tcg_out_bundle(s, miB,
tcg_opc_movi_a(TCG_REG_P7, TCG_REG_R58, mem_index),
INSN_NOP_I,
tcg_opc_b5 (TCG_REG_P7, OPC_BR_CALL_SPTK_MANY_B5,
TCG_REG_B0, TCG_REG_B6));
} else {
tcg_out_bundle(s, miB,
tcg_opc_movi_a(TCG_REG_P7, TCG_REG_R58, mem_index),
tcg_opc_bswap64_i(TCG_REG_P6, TCG_REG_R8, TCG_REG_R8),
tcg_opc_b5 (TCG_REG_P7, OPC_BR_CALL_SPTK_MANY_B5,
TCG_REG_B0, TCG_REG_B6));
}
tcg_out_bundle(s, MmI,
tcg_opc_m1 (TCG_REG_P6, opc_ld_m1[s_bits],
TCG_REG_R8, TCG_REG_R2),
tcg_opc_m1 (TCG_REG_P7, OPC_LD8_M1, TCG_REG_R1, TCG_REG_R2),
bswap1);
tcg_out_bundle(s, miB,
tcg_opc_movi_a(TCG_REG_P7, TCG_REG_R58, mem_index),
bswap2,
tcg_opc_b5 (TCG_REG_P7, OPC_BR_CALL_SPTK_MANY_B5,
TCG_REG_B0, TCG_REG_B6));
tcg_out_bundle(s, miI,
INSN_NOP_M,
INSN_NOP_I,