diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2019-02-25 13:20:01 -0800 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2019-04-24 13:04:33 -0700 |
| commit | 3b832d67a993968868f4087a9720a5c911e23f7a (patch) | |
| tree | 52cfaba738c35bdfe050852afaae67171bff5ca6 /tcg | |
| parent | c6fb8c0cf704c4a1a48c3e99e995ad4c58150dab (diff) | |
| download | qemu-3b832d67a993968868f4087a9720a5c911e23f7a.zip | |
tcg/arm: Support INDEX_op_extract2_i32
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/arm/tcg-target.h | 2 | ||||
| -rw-r--r-- | tcg/arm/tcg-target.inc.c | 25 |
2 files changed, 26 insertions, 1 deletions
diff --git a/tcg/arm/tcg-target.h b/tcg/arm/tcg-target.h index 4ee6c98958..17e771374d 100644 --- a/tcg/arm/tcg-target.h +++ b/tcg/arm/tcg-target.h @@ -116,7 +116,7 @@ extern bool use_idiv_instructions; #define TCG_TARGET_HAS_deposit_i32 use_armv7_instructions #define TCG_TARGET_HAS_extract_i32 use_armv7_instructions #define TCG_TARGET_HAS_sextract_i32 use_armv7_instructions -#define TCG_TARGET_HAS_extract2_i32 0 +#define TCG_TARGET_HAS_extract2_i32 1 #define TCG_TARGET_HAS_movcond_i32 1 #define TCG_TARGET_HAS_mulu2_i32 1 #define TCG_TARGET_HAS_muls2_i32 1 diff --git a/tcg/arm/tcg-target.inc.c b/tcg/arm/tcg-target.inc.c index 2245a8aeb9..6873b0cf95 100644 --- a/tcg/arm/tcg-target.inc.c +++ b/tcg/arm/tcg-target.inc.c @@ -2064,6 +2064,27 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, case INDEX_op_sextract_i32: tcg_out_sextract(s, COND_AL, args[0], args[1], args[2], args[3]); break; + case INDEX_op_extract2_i32: + /* ??? These optimization vs zero should be generic. */ + /* ??? But we can't substitute 2 for 1 in the opcode stream yet. */ + if (const_args[1]) { + if (const_args[2]) { + tcg_out_movi(s, TCG_TYPE_REG, args[0], 0); + } else { + tcg_out_dat_reg(s, COND_AL, ARITH_MOV, args[0], 0, + args[2], SHIFT_IMM_LSL(32 - args[3])); + } + } else if (const_args[2]) { + tcg_out_dat_reg(s, COND_AL, ARITH_MOV, args[0], 0, + args[1], SHIFT_IMM_LSR(args[3])); + } else { + /* We can do extract2 in 2 insns, vs the 3 required otherwise. */ + tcg_out_dat_reg(s, COND_AL, ARITH_MOV, TCG_REG_TMP, 0, + args[2], SHIFT_IMM_LSL(32 - args[3])); + tcg_out_dat_reg(s, COND_AL, ARITH_ORR, args[0], TCG_REG_TMP, + args[1], SHIFT_IMM_LSR(args[3])); + } + break; case INDEX_op_div_i32: tcg_out_sdiv(s, COND_AL, args[0], args[1], args[2]); @@ -2108,6 +2129,8 @@ static const TCGTargetOpDef *tcg_target_op_def(TCGOpcode op) = { .args_ct_str = { "s", "s", "s", "s" } }; static const TCGTargetOpDef br = { .args_ct_str = { "r", "rIN" } }; + static const TCGTargetOpDef ext2 + = { .args_ct_str = { "r", "rZ", "rZ" } }; static const TCGTargetOpDef dep = { .args_ct_str = { "r", "0", "rZ" } }; static const TCGTargetOpDef movc @@ -2174,6 +2197,8 @@ static const TCGTargetOpDef *tcg_target_op_def(TCGOpcode op) return &br; case INDEX_op_deposit_i32: return &dep; + case INDEX_op_extract2_i32: + return &ext2; case INDEX_op_movcond_i32: return &movc; case INDEX_op_add2_i32: |