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| author | Richard Henderson <richard.henderson@linaro.org> | 2023-04-03 17:36:02 +0000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-05-11 09:53:41 +0100 |
| commit | e3205306d89cd4abcd4d88cbdad38046554249db (patch) | |
| tree | 288646f33d67653402119de777e29a4e8dcc596d /tcg | |
| parent | eb491329f6eea979e95db191b5a4b44a09b008bf (diff) | |
| download | qemu-e3205306d89cd4abcd4d88cbdad38046554249db.zip qemu-e3205306d89cd4abcd4d88cbdad38046554249db.tar.gz qemu-e3205306d89cd4abcd4d88cbdad38046554249db.tar.bz2 | |
tcg/loongarch64: Simplify constraints on qemu_ld/st
The softmmu tlb uses TCG_REG_TMP[0-2], not any of the normally available
registers. Now that we handle overlap betwen inputs and helper arguments,
we can allow any allocatable reg.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/loongarch64/tcg-target-con-set.h | 2 | ||||
| -rw-r--r-- | tcg/loongarch64/tcg-target-con-str.h | 1 | ||||
| -rw-r--r-- | tcg/loongarch64/tcg-target.c.inc | 23 |
3 files changed, 4 insertions, 22 deletions
diff --git a/tcg/loongarch64/tcg-target-con-set.h b/tcg/loongarch64/tcg-target-con-set.h index 172c107..c2bde44 100644 --- a/tcg/loongarch64/tcg-target-con-set.h +++ b/tcg/loongarch64/tcg-target-con-set.h @@ -17,9 +17,7 @@ C_O0_I1(r) C_O0_I2(rZ, r) C_O0_I2(rZ, rZ) -C_O0_I2(LZ, L) C_O1_I1(r, r) -C_O1_I1(r, L) C_O1_I2(r, r, rC) C_O1_I2(r, r, ri) C_O1_I2(r, r, rI) diff --git a/tcg/loongarch64/tcg-target-con-str.h b/tcg/loongarch64/tcg-target-con-str.h index 541ff47..6e9ccca 100644 --- a/tcg/loongarch64/tcg-target-con-str.h +++ b/tcg/loongarch64/tcg-target-con-str.h @@ -14,7 +14,6 @@ * REGS(letter, register_mask) */ REGS('r', ALL_GENERAL_REGS) -REGS('L', ALL_GENERAL_REGS & ~SOFTMMU_RESERVE_REGS) /* * Define constraint letters for constants: diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc index 60d2c90..83fa45c 100644 --- a/tcg/loongarch64/tcg-target.c.inc +++ b/tcg/loongarch64/tcg-target.c.inc @@ -133,18 +133,7 @@ static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot) #define TCG_CT_CONST_C12 0x1000 #define TCG_CT_CONST_WSZ 0x2000 -#define ALL_GENERAL_REGS MAKE_64BIT_MASK(0, 32) -/* - * For softmmu, we need to avoid conflicts with the first 5 - * argument registers to call the helper. Some of these are - * also used for the tlb lookup. - */ -#ifdef CONFIG_SOFTMMU -#define SOFTMMU_RESERVE_REGS MAKE_64BIT_MASK(TCG_REG_A0, 5) -#else -#define SOFTMMU_RESERVE_REGS 0 -#endif - +#define ALL_GENERAL_REGS MAKE_64BIT_MASK(0, 32) static inline tcg_target_long sextreg(tcg_target_long val, int pos, int len) { @@ -1541,16 +1530,14 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op) case INDEX_op_st32_i64: case INDEX_op_st_i32: case INDEX_op_st_i64: + case INDEX_op_qemu_st_i32: + case INDEX_op_qemu_st_i64: return C_O0_I2(rZ, r); case INDEX_op_brcond_i32: case INDEX_op_brcond_i64: return C_O0_I2(rZ, rZ); - case INDEX_op_qemu_st_i32: - case INDEX_op_qemu_st_i64: - return C_O0_I2(LZ, L); - case INDEX_op_ext8s_i32: case INDEX_op_ext8s_i64: case INDEX_op_ext8u_i32: @@ -1586,11 +1573,9 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op) case INDEX_op_ld32u_i64: case INDEX_op_ld_i32: case INDEX_op_ld_i64: - return C_O1_I1(r, r); - case INDEX_op_qemu_ld_i32: case INDEX_op_qemu_ld_i64: - return C_O1_I1(r, L); + return C_O1_I1(r, r); case INDEX_op_andc_i32: case INDEX_op_andc_i64: |