diff mbox series

[PULL,v2,55/60] tcg/optimize: Propagate sign info for setcond

Message ID 20211029043329.1518029-56-richard.henderson@linaro.org
State Accepted
Commit 275d7d8e70ef8679e241ce78c83548067f403394
Headers show
Series tcg patch queue | expand

Commit Message

Richard Henderson Oct. 29, 2021, 4:33 a.m. UTC 
The result is either 0 or 1, which means that we have
a 2 bit signed result, and thus 62 bits of sign.
For clarity, use the smask_from_zmask function.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 tcg/optimize.c | 2 ++
 1 file changed, 2 insertions(+)

-- 
2.25.1
diff mbox series

Patch

diff --git a/tcg/optimize.c b/tcg/optimize.c
index de1abd9cc3..5fa4d7285d 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -1730,6 +1730,7 @@  static bool fold_setcond(OptContext *ctx, TCGOp *op)
     }
 
     ctx->z_mask = 1;
+    ctx->s_mask = smask_from_zmask(1);
     return false;
 }
 
@@ -1802,6 +1803,7 @@  static bool fold_setcond2(OptContext *ctx, TCGOp *op)
     }
 
     ctx->z_mask = 1;
+    ctx->s_mask = smask_from_zmask(1);
     return false;
 
  do_setcond_const: