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[PATCH v8 42/68] target/nios2: Use tcg_constant_tl
From: |
Richard Henderson |
Subject: |
[PATCH v8 42/68] target/nios2: Use tcg_constant_tl |
Date: |
Fri, 22 Apr 2022 09:52:12 -0700 |
Replace current uses of tcg_const_tl, and remove the frees.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220421151735.31996-43-richard.henderson@linaro.org>
---
target/nios2/translate.c | 30 ++++++------------------------
1 file changed, 6 insertions(+), 24 deletions(-)
diff --git a/target/nios2/translate.c b/target/nios2/translate.c
index b27269bf08..f33015f942 100644
--- a/target/nios2/translate.c
+++ b/target/nios2/translate.c
@@ -99,7 +99,6 @@
typedef struct DisasContext {
DisasContextBase base;
- TCGv_i32 zero;
target_ulong pc;
int mem_idx;
const ControlRegState *cr_state;
@@ -125,31 +124,20 @@ static uint8_t get_opxcode(uint32_t code)
return instr.opx;
}
-static TCGv load_zero(DisasContext *dc)
+static TCGv load_gpr(DisasContext *dc, unsigned reg)
{
- if (!dc->zero) {
- dc->zero = tcg_const_i32(0);
- }
- return dc->zero;
-}
-
-static TCGv load_gpr(DisasContext *dc, uint8_t reg)
-{
- if (likely(reg != R_ZERO)) {
- return cpu_R[reg];
- } else {
- return load_zero(dc);
+ assert(reg < NUM_GP_REGS);
+ if (unlikely(reg == R_ZERO)) {
+ return tcg_constant_tl(0);
}
+ return cpu_R[reg];
}
static void t_gen_helper_raise_exception(DisasContext *dc,
uint32_t index)
{
- TCGv_i32 tmp = tcg_const_i32(index);
-
tcg_gen_movi_tl(cpu_pc, dc->pc);
- gen_helper_raise_exception(cpu_env, tmp);
- tcg_temp_free_i32(tmp);
+ gen_helper_raise_exception(cpu_env, tcg_constant_i32(index));
dc->base.is_jmp = DISAS_NORETURN;
}
@@ -876,14 +864,8 @@ static void nios2_tr_translate_insn(DisasContextBase
*dcbase, CPUState *cs)
return;
}
- dc->zero = NULL;
-
instr = &i_type_instructions[op];
instr->handler(dc, code, instr->flags);
-
- if (dc->zero) {
- tcg_temp_free(dc->zero);
- }
}
static void nios2_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
--
2.34.1
- [PATCH v8 32/68] target/nios2: Clean up nios2_cpu_do_interrupt, (continued)
- [PATCH v8 32/68] target/nios2: Clean up nios2_cpu_do_interrupt, Richard Henderson, 2022/04/22
- [PATCH v8 33/68] target/nios2: Hoist CPU_LOG_INT logging, Richard Henderson, 2022/04/22
- [PATCH v8 34/68] target/nios2: Handle EXCP_UNALIGN and EXCP_UNALIGND, Richard Henderson, 2022/04/22
- [PATCH v8 35/68] target/nios2: Cleanup set of CR_EXCEPTION for do_interrupt, Richard Henderson, 2022/04/22
- [PATCH v8 36/68] target/nios2: Clean up handling of tlbmisc in do_exception, Richard Henderson, 2022/04/22
- [PATCH v8 38/68] target/nios2: Implement cpuid, Richard Henderson, 2022/04/22
- [PATCH v8 37/68] target/nios2: Prevent writes to read-only or reserved control fields, Richard Henderson, 2022/04/22
- [PATCH v8 39/68] target/nios2: Implement CR_STATUS.RSIE, Richard Henderson, 2022/04/22
- [PATCH v8 40/68] target/nios2: Remove CPU_INTERRUPT_NMI, Richard Henderson, 2022/04/22
- [PATCH v8 41/68] target/nios2: Support division error exception, Richard Henderson, 2022/04/22
- [PATCH v8 42/68] target/nios2: Use tcg_constant_tl,
Richard Henderson <=
- [PATCH v8 43/68] target/nios2: Split out named structs for [IRJ]_TYPE, Richard Henderson, 2022/04/22
- [PATCH v8 44/68] target/nios2: Split out helpers for gen_i_cmpxx, Richard Henderson, 2022/04/22
- [PATCH v8 45/68] target/nios2: Split out helpers for gen_i_math_logic, Richard Henderson, 2022/04/22
- [PATCH v8 46/68] target/nios2: Split out helpers for gen_r_math_logic, Richard Henderson, 2022/04/22
- [PATCH v8 47/68] target/nios2: Split out helpers for gen_rr_mul_high, Richard Henderson, 2022/04/22
- [PATCH v8 48/68] target/nios2: Split out helpers for gen_rr_shift, Richard Henderson, 2022/04/22