diff mbox series

[Stable-8.2.2,12/60] tcg/loongarch64: Set vector registers call clobbered

Message ID 20240221082058.2141850-12-mjt@tls.msk.ru
State New
Headers show
Series None | expand

Commit Message

Michael Tokarev Feb. 21, 2024, 8:20 a.m. UTC 
From: Richard Henderson <richard.henderson@linaro.org>

Because there are more call clobbered registers than
call saved registers, we begin with all registers as
call clobbered and then reset those that are saved.

This was missed when we introduced the LSX support.

Cc: qemu-stable@nongnu.org
Fixes: 16288ded944 ("tcg/loongarch64: Lower basic tcg vec ops to LSX")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2136
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20240201233414.500588-1-richard.henderson@linaro.org>
(cherry picked from commit 45bf0e7aa648369cf8ab2333bd20144806fc1be3)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Patch

diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index bab0a173a3..dcf0205458 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -2327,7 +2327,7 @@  static void tcg_target_init(TCGContext *s)
     tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS;
     tcg_target_available_regs[TCG_TYPE_I64] = ALL_GENERAL_REGS;
 
-    tcg_target_call_clobber_regs = ALL_GENERAL_REGS;
+    tcg_target_call_clobber_regs = ALL_GENERAL_REGS | ALL_VECTOR_REGS;
     tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S0);
     tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S1);
     tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S2);