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[PATCH v4 07/13] tcg/ppc: Use ADDPCIS in tcg_out_goto_tb
From: |
Richard Henderson |
Subject: |
[PATCH v4 07/13] tcg/ppc: Use ADDPCIS in tcg_out_goto_tb |
Date: |
Fri, 13 Oct 2023 10:10:06 -0700 |
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/ppc/tcg-target.c.inc | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 720f92ff33..6337b1e8be 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -2593,6 +2593,7 @@ static void tcg_out_exit_tb(TCGContext *s, uintptr_t arg)
static void tcg_out_goto_tb(TCGContext *s, int which)
{
uintptr_t ptr = get_jmp_target_addr(s, which);
+ int16_t lo;
/* Direct branch will be patched by tb_target_set_jmp_target. */
set_jmp_insn_offset(s, which);
@@ -2602,9 +2603,15 @@ static void tcg_out_goto_tb(TCGContext *s, int which)
if (USE_REG_TB) {
ptrdiff_t offset = ppc_tbrel_diff(s, (void *)ptr);
tcg_out_mem_long(s, LD, LDX, TCG_REG_TMP1, TCG_REG_TB, offset);
+ } else if (have_isa_3_00) {
+ ptrdiff_t offset = tcg_pcrel_diff(s, (void *)ptr) - 4;
+ lo = offset;
+ tcg_out_addpcis(s, TCG_REG_TMP1, offset - lo);
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1, lo);
} else {
- tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, ptr - (int16_t)ptr);
- tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1, (int16_t)ptr);
+ lo = ptr;
+ tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, ptr - lo);
+ tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1, lo);
}
tcg_out32(s, MTSPR | RS(TCG_REG_TMP1) | CTR);
--
2.34.1
- [PATCH v4 00/13] tcg/ppc: direct branching, power9, power10, Richard Henderson, 2023/10/13
- [PATCH v4 01/13] tcg/ppc: Untabify tcg-target.c.inc, Richard Henderson, 2023/10/13
- [PATCH v4 02/13] tcg/ppc: Enable direct branching tcg_out_goto_tb with TCG_REG_TB, Richard Henderson, 2023/10/13
- [PATCH v4 03/13] tcg/ppc: Reinterpret tb-relative to TB+4, Richard Henderson, 2023/10/13
- [PATCH v4 04/13] tcg/ppc: Use ADDPCIS in tcg_out_tb_start, Richard Henderson, 2023/10/13
- [PATCH v4 06/13] tcg/ppc: Use ADDPCIS for the constant pool, Richard Henderson, 2023/10/13
- [PATCH v4 07/13] tcg/ppc: Use ADDPCIS in tcg_out_goto_tb,
Richard Henderson <=
- [PATCH v4 05/13] tcg/ppc: Use ADDPCIS in tcg_out_movi_int, Richard Henderson, 2023/10/13
- [PATCH v4 08/13] tcg/ppc: Use PADDI in tcg_out_movi, Richard Henderson, 2023/10/13
- [PATCH v4 11/13] tcg/ppc: Use prefixed instructions in tcg_out_dupi_vec, Richard Henderson, 2023/10/13
- [PATCH v4 09/13] tcg/ppc: Use prefixed instructions in tcg_out_mem_long, Richard Henderson, 2023/10/13
- [PATCH v4 12/13] tcg/ppc: Use PLD in tcg_out_goto_tb, Richard Henderson, 2023/10/13
- [PATCH v4 13/13] tcg/ppc: Disable TCG_REG_TB for Power9/Power10, Richard Henderson, 2023/10/13
- [PATCH v4 10/13] tcg/ppc: Use PLD in tcg_out_movi for constant pool, Richard Henderson, 2023/10/13