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authorAurelien Jarno <aurelien@aurel32.net>2011-04-14 00:49:29 +0200
committerAurelien Jarno <aurelien@aurel32.net>2011-04-17 20:32:14 +0200
commita4d2d1a063897b859b7f25e414b229370b679bc8 (patch)
tree35d2225f965da3fcfd64039da30388f0bfc32ca3
parentb4a0ef7911297567e17b56d96ae06d6283049630 (diff)
downloadqemu-arm-a4d2d1a063897b859b7f25e414b229370b679bc8.tar.gz
target-alpha: use new float64_unordered_quiet() function
Use float64_unordered_quiet() in helper_cmptun() instead of doing the the comparison manually. According to the "Alpha Compiler Writer's Guide", we should use the _quiet version here, as CMPTUN and CMPTEQ should generate InvalidOp for SNaNs but not for QNaNs. Thanks to Peter Maydell <peter.maydell@linaro.org> and Richard Henderson <rth@twiddle.net> for digging into the manuals. Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
-rw-r--r--target-alpha/op_helper.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/target-alpha/op_helper.c b/target-alpha/op_helper.c
index 6c2ae2061f..36f4f6d3b8 100644
--- a/target-alpha/op_helper.c
+++ b/target-alpha/op_helper.c
@@ -904,10 +904,11 @@ uint64_t helper_cmptun (uint64_t a, uint64_t b)
fa = t_to_float64(a);
fb = t_to_float64(b);
- if (float64_is_quiet_nan(fa) || float64_is_quiet_nan(fb))
+ if (float64_unordered_quiet(fa, fb, &FP_STATUS)) {
return 0x4000000000000000ULL;
- else
+ } else {
return 0;
+ }
}
uint64_t helper_cmpteq(uint64_t a, uint64_t b)