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Diffstat (limited to 'results/scraper/fex/3850')
| -rw-r--r-- | results/scraper/fex/3850 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/results/scraper/fex/3850 b/results/scraper/fex/3850 new file mode 100644 index 000000000..3fda835e4 --- /dev/null +++ b/results/scraper/fex/3850 @@ -0,0 +1,2 @@ +MMX/x87 interaction is subtly broken +MMX is supposed to set the upper bits of the 80-bit x87 register to -1, and also supposed to set certain x87 flags. FEX isn't doing either. I don't know of any applications that rely on this behaviour, but Intel documents it explicitly. \ No newline at end of file |