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[PULL,54/61] target/arm: Simplify gen_sar

Message ID 20220422100432.2288247-55-peter.maydell@linaro.org
State New
Headers show
Series [PULL,01/61] hw/intc/arm_gicv3_its: Add missing blank line | expand

Commit Message

Peter Maydell April 22, 2022, 10:04 a.m. UTC 
From: Richard Henderson <richard.henderson@linaro.org>

Use tcg_gen_umin_i32 instead of tcg_gen_movcond_i32.
Use tcg_constant_i32 while we're at it.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/translate.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)
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Patch

diff --git a/target/arm/translate.c b/target/arm/translate.c
index 0c9d50d48df..086dc0d3b15 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -568,12 +568,10 @@  GEN_SHIFT(shr)
 
 static void gen_sar(TCGv_i32 dest, TCGv_i32 t0, TCGv_i32 t1)
 {
-    TCGv_i32 tmp1, tmp2;
-    tmp1 = tcg_temp_new_i32();
+    TCGv_i32 tmp1 = tcg_temp_new_i32();
+
     tcg_gen_andi_i32(tmp1, t1, 0xff);
-    tmp2 = tcg_const_i32(0x1f);
-    tcg_gen_movcond_i32(TCG_COND_GTU, tmp1, tmp1, tmp2, tmp2, tmp1);
-    tcg_temp_free_i32(tmp2);
+    tcg_gen_umin_i32(tmp1, tmp1, tcg_constant_i32(31));
     tcg_gen_sar_i32(dest, t0, tmp1);
     tcg_temp_free_i32(tmp1);
 }