From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Alex Bennée" <alex.bennee@linaro.org>
Subject: [PATCH 23/43] tcg: Use tcg_constant_i32 with icount expander
Date: Tue, 8 Sep 2020 17:16:27 -0700 [thread overview]
Message-ID: <20200909001647.532249-24-richard.henderson@linaro.org> (raw)
In-Reply-To: <20200909001647.532249-1-richard.henderson@linaro.org>
We must do this before we adjust tcg_out_movi_i32, lest the
under-the-hood poking that we do for icount be broken.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/exec/gen-icount.h | 25 +++++++++++++------------
1 file changed, 13 insertions(+), 12 deletions(-)
diff --git a/include/exec/gen-icount.h b/include/exec/gen-icount.h
index 822c43cfd3..404732518a 100644
--- a/include/exec/gen-icount.h
+++ b/include/exec/gen-icount.h
@@ -34,7 +34,7 @@ static inline void gen_io_end(void)
static inline void gen_tb_start(TranslationBlock *tb)
{
- TCGv_i32 count, imm;
+ TCGv_i32 count;
tcg_ctx->exitreq_label = gen_new_label();
if (tb_cflags(tb) & CF_USE_ICOUNT) {
@@ -48,15 +48,13 @@ static inline void gen_tb_start(TranslationBlock *tb)
offsetof(ArchCPU, env));
if (tb_cflags(tb) & CF_USE_ICOUNT) {
- imm = tcg_temp_new_i32();
- /* We emit a movi with a dummy immediate argument. Keep the insn index
- * of the movi so that we later (when we know the actual insn count)
- * can update the immediate argument with the actual insn count. */
- tcg_gen_movi_i32(imm, 0xdeadbeef);
+ /*
+ * We emit a sub with a dummy immediate argument. Keep the insn index
+ * of the sub so that we later (when we know the actual insn count)
+ * can update the argument with the actual insn count.
+ */
+ tcg_gen_sub_i32(count, count, tcg_constant_i32(0));
icount_start_insn = tcg_last_op();
-
- tcg_gen_sub_i32(count, count, imm);
- tcg_temp_free_i32(imm);
}
tcg_gen_brcondi_i32(TCG_COND_LT, count, 0, tcg_ctx->exitreq_label);
@@ -74,9 +72,12 @@ static inline void gen_tb_start(TranslationBlock *tb)
static inline void gen_tb_end(TranslationBlock *tb, int num_insns)
{
if (tb_cflags(tb) & CF_USE_ICOUNT) {
- /* Update the num_insn immediate parameter now that we know
- * the actual insn count. */
- tcg_set_insn_param(icount_start_insn, 1, num_insns);
+ /*
+ * Update the num_insn immediate parameter now that we know
+ * the actual insn count.
+ */
+ tcg_set_insn_param(icount_start_insn, 2,
+ tcgv_i32_arg(tcg_constant_i32(num_insns)));
}
gen_set_label(tcg_ctx->exitreq_label);
--
2.25.1
next prev parent reply other threads:[~2020-09-09 0:28 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-09 0:16 [PATCH 00/43] tcg patch queue Richard Henderson
2020-09-09 0:16 ` [PATCH 01/43] tcg: Adjust simd_desc size encoding Richard Henderson
2020-09-09 0:16 ` [PATCH 02/43] tcg: Drop union from TCGArgConstraint Richard Henderson
2020-09-09 17:43 ` Philippe Mathieu-Daudé
2020-09-09 0:16 ` [PATCH 03/43] tcg: Move sorted_args into TCGArgConstraint.sort_index Richard Henderson
2020-09-09 0:16 ` [PATCH 04/43] tcg: Remove TCG_CT_REG Richard Henderson
2020-09-09 0:16 ` [PATCH 05/43] tcg: Move some TCG_CT_* bits to TCGArgConstraint bitfields Richard Henderson
2020-09-09 0:16 ` [PATCH 06/43] tcg: Remove TCGOpDef.used Richard Henderson
2020-09-09 17:45 ` Philippe Mathieu-Daudé
2020-09-09 0:16 ` [PATCH 07/43] tcg/i386: Fix dupi for avx2 32-bit hosts Richard Henderson
2020-09-09 0:16 ` [PATCH 08/43] tcg: Fix generation of dupi_vec for 32-bit host Richard Henderson
2020-09-09 0:16 ` [PATCH 09/43] tcg/optimize: Fold dup2_vec Richard Henderson
2020-09-09 0:16 ` [PATCH 10/43] tcg: Remove TCG_TARGET_HAS_cmp_vec Richard Henderson
2020-09-09 17:47 ` Philippe Mathieu-Daudé
2020-09-09 0:16 ` [PATCH 11/43] tcg: Use tcg_out_dupi_vec from temp_load Richard Henderson
2020-09-09 0:16 ` [PATCH 12/43] tcg: Increase tcg_out_dupi_vec immediate to int64_t Richard Henderson
2020-09-09 0:16 ` [PATCH 13/43] tcg: Consolidate 3 bits into enum TCGTempKind Richard Henderson
2020-09-09 17:52 ` Philippe Mathieu-Daudé
2020-09-09 0:16 ` [PATCH 14/43] tcg: Add temp_readonly Richard Henderson
2020-09-09 0:16 ` [PATCH 15/43] tcg: Expand TCGTemp.val to 64-bits Richard Henderson
2020-09-09 0:16 ` [PATCH 16/43] tcg: Rename struct tcg_temp_info to TempOptInfo Richard Henderson
2020-09-09 0:16 ` [PATCH 17/43] tcg: Expand TempOptInfo to 64-bits Richard Henderson
2020-09-09 0:16 ` [PATCH 18/43] tcg: Introduce TYPE_CONST temporaries Richard Henderson
2020-09-09 0:16 ` [PATCH 19/43] tcg/optimize: Improve find_better_copy Richard Henderson
2020-09-09 0:16 ` [PATCH 20/43] tcg/optimize: Adjust TempOptInfo allocation Richard Henderson
2020-09-09 0:16 ` [PATCH 21/43] tcg/optimize: Use tcg_constant_internal with constant folding Richard Henderson
2020-09-09 0:16 ` [PATCH 22/43] tcg: Convert tcg_gen_dupi_vec to TCG_CONST Richard Henderson
2020-09-09 0:16 ` Richard Henderson [this message]
2020-09-09 0:16 ` [PATCH 24/43] tcg: Use tcg_constant_{i32,i64} with tcg int expanders Richard Henderson
2020-09-09 0:16 ` [PATCH 25/43] tcg: Use tcg_constant_{i32,i64} with tcg plugins Richard Henderson
2020-09-09 0:16 ` [PATCH 26/43] tcg: Use tcg_constant_{i32, i64, vec} with gvec expanders Richard Henderson
2020-09-09 0:16 ` [PATCH 27/43] tcg/tci: Add special tci_movi_{i32,i64} opcodes Richard Henderson
2020-09-09 0:16 ` [PATCH 28/43] tcg: Remove movi and dupi opcodes Richard Henderson
2020-09-09 0:16 ` [PATCH 29/43] tcg: Add tcg_reg_alloc_dup2 Richard Henderson
2020-09-09 0:16 ` [PATCH 30/43] tcg/i386: Use tcg_constant_vec with tcg vec expanders Richard Henderson
2020-09-09 0:16 ` [PATCH 31/43] tcg: Remove tcg_gen_dup{8,16,32,64}i_vec Richard Henderson
2020-09-09 0:16 ` [PATCH 32/43] tcg/ppc: Use tcg_constant_vec with tcg vec expanders Richard Henderson
2020-09-09 0:16 ` [PATCH 33/43] tcg/aarch64: " Richard Henderson
2020-09-09 0:16 ` [PATCH 34/43] tcg: Add tcg-constr.c.inc Richard Henderson
2020-09-09 0:16 ` [PATCH 35/43] tcg/i386: Convert to tcg-constr.c.inc Richard Henderson
2020-09-09 0:16 ` [PATCH 36/43] tcg/aarch64: " Richard Henderson
2020-09-09 0:16 ` [PATCH 37/43] tcg/arm: " Richard Henderson
2020-09-09 0:16 ` [PATCH 38/43] tcg/mips: " Richard Henderson
2020-09-09 0:16 ` [PATCH 39/43] tcg/ppc: " Richard Henderson
2020-09-09 0:16 ` [PATCH 40/43] tcg/riscv: " Richard Henderson
2020-09-09 0:16 ` [PATCH 41/43] tcg/s390: " Richard Henderson
2020-09-09 0:16 ` [PATCH 42/43] tcg/sparc: " Richard Henderson
2020-09-09 0:16 ` [PATCH 43/43] tcg/tci: " Richard Henderson
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