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[PATCH for-7.1 v6 31/51] target/nios2: Use tcg_constant_tl
From: |
Richard Henderson |
Subject: |
[PATCH for-7.1 v6 31/51] target/nios2: Use tcg_constant_tl |
Date: |
Wed, 16 Mar 2022 22:05:18 -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>
---
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 c8fb05a9cb..4ad47bb966 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)
--
2.25.1
- [PATCH for-7.1 v6 23/51] target/nios2: Handle EXCP_UNALIGN and EXCP_UALIGND, (continued)
- [PATCH for-7.1 v6 23/51] target/nios2: Handle EXCP_UNALIGN and EXCP_UALIGND, Richard Henderson, 2022/03/17
- [PATCH for-7.1 v6 25/51] target/nios2: Clean up handling of tlbmisc in do_exception, Richard Henderson, 2022/03/17
- [PATCH for-7.1 v6 29/51] target/nios2: Remove CPU_INTERRUPT_NMI, Richard Henderson, 2022/03/17
- [PATCH for-7.1 v6 24/51] target/nios2: Cleanup set of CR_EXCEPTION for do_interrupt, Richard Henderson, 2022/03/17
- [PATCH for-7.1 v6 27/51] target/nios2: Implement cpuid, Richard Henderson, 2022/03/17
- [PATCH for-7.1 v6 31/51] target/nios2: Use tcg_constant_tl,
Richard Henderson <=
- [PATCH for-7.1 v6 32/51] target/nios2: Introduce dest_gpr, Richard Henderson, 2022/03/17
- [PATCH for-7.1 v6 37/51] target/nios2: Use gen_goto_tb for DISAS_TOO_MANY, Richard Henderson, 2022/03/17
- [PATCH for-7.1 v6 26/51] target/nios2: Prevent writes to read-only or reserved control fields, Richard Henderson, 2022/03/17
- [PATCH for-7.1 v6 33/51] target/nios2: Drop CR_STATUS_EH from tb->flags, Richard Henderson, 2022/03/17
- [PATCH for-7.1 v6 28/51] target/nios2: Implement CR_STATUS.RSIE, Richard Henderson, 2022/03/17
- [PATCH for-7.1 v6 30/51] target/nios2: Support division error exception, Richard Henderson, 2022/03/17