diff mbox

[v2,15/17] target-alpha: Suppress underflow from CVTTQ if DNZ

Message ID 1431452387-20280-16-git-send-email-rth@twiddle.net
State New
Headers show

Commit Message

Richard Henderson May 12, 2015, 5:39 p.m. UTC 
I.e. respect flush_inputs_to_zero.

Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 target-alpha/fpu_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/target-alpha/fpu_helper.c b/target-alpha/fpu_helper.c
index ea1f2e2..fa4401d 100644
--- a/target-alpha/fpu_helper.c
+++ b/target-alpha/fpu_helper.c
@@ -452,7 +452,7 @@  static uint64_t do_cvttq(CPUAlphaState *env, uint64_t a, int roundmode)
     frac = a & 0xfffffffffffffull;
 
     if (exp == 0) {
-        if (unlikely(frac != 0)) {
+        if (unlikely(frac != 0) && !env->fp_status.flush_inputs_to_zero) {
             goto do_underflow;
         }
     } else if (exp == 0x7ff) {