diff mbox series

[v3,06/14] tcg/ppc: Use ADDPCIS in tcg_out_movi_int

Message ID 20230815195741.8325-7-richard.henderson@linaro.org
State Superseded
Headers show
Series tcg/ppc: direct branching, power9, power10 | expand

Commit Message

Richard Henderson Aug. 15, 2023, 7:57 p.m. UTC 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/ppc/tcg-target.c.inc | 13 +++++++++++++
 1 file changed, 13 insertions(+)
diff mbox series

Patch

diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc
index 36b4f61236..a302bfff2e 100644
--- a/tcg/ppc/tcg-target.c.inc
+++ b/tcg/ppc/tcg-target.c.inc
@@ -1050,6 +1050,19 @@  static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret,
         return;
     }
 
+    /* Load addresses within 2GB with 2 insns. */
+    if (have_isa_3_00) {
+        intptr_t hi = tcg_pcrel_diff(s, (void *)arg) - 4;
+        int16_t lo = hi;
+
+        hi -= lo;
+        if (hi == (int32_t)hi) {
+            tcg_out_addpcis(s, TCG_REG_TMP2, hi);
+            tcg_out32(s, ADDI | TAI(ret, TCG_REG_TMP2, lo));
+            return;
+        }
+    }
+
     /* Load addresses within 2GB of TB with 2 (or rarely 3) insns.  */
     if (!in_prologue && USE_REG_TB && tb_diff == (int32_t)tb_diff) {
         tcg_out_mem_long(s, ADDI, ADD, ret, TCG_REG_TB, tb_diff);