From cc3f99aac41903362521fac551b835abe369659a Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Tue, 15 Aug 2023 17:48:19 +0000 Subject: [PATCH] tcg/ppc: Disable TCG_REG_TB for Power9/Power10 This appears to slightly improve performance on power9/10. Signed-off-by: Richard Henderson --- tcg/ppc/tcg-target.c.inc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tcg/ppc/tcg-target.c.inc b/tcg/ppc/tcg-target.c.inc index 6496f76e41..c31da4da9d 100644 --- a/tcg/ppc/tcg-target.c.inc +++ b/tcg/ppc/tcg-target.c.inc @@ -83,7 +83,7 @@ #define TCG_VEC_TMP2 TCG_REG_V1 #define TCG_REG_TB TCG_REG_R31 -#define USE_REG_TB (TCG_TARGET_REG_BITS == 64) +#define USE_REG_TB (TCG_TARGET_REG_BITS == 64 && !have_isa_3_00) /* Shorthand for size of a pointer. Avoid promotion to unsigned. */ #define SZP ((int)sizeof(void *)) -- 2.30.2