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| author | Keith Randall <khr@golang.org> | 2016-01-12 12:42:28 -0800 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2016-01-13 16:23:13 +0000 |
| commit | 3d01f28e4729b77fa528b349e1eb434c169ffa8b (patch) | |
| tree | 7dfd2243e52ad4309a8b10f4d7f923aaa781411e /src/database | |
| parent | f3ce054a44a84795bec8a8155c8997226b113f76 (diff) | |
| download | go-3d01f28e4729b77fa528b349e1eb434c169ffa8b.tar.xz | |
cmd/compile: stop using fucomi* ops for 387 builds
The fucomi* opcodes were only introduced for the Pentium Pro.
They do not exist for an MMX Pentium. Use the fucom* instructions
instead and move the condition codes from the fp flags register to
the integer flags register explicitly.
The use of fucomi* opcodes in ggen.go was introduced in 1.5 (CL 8738).
The bad ops were generated for 64-bit floating-point comparisons.
The use of fucomi* opcodes in gsubr.go dates back to at least 1.1.
The bad ops were generated for float{32,64} to uint64 conversions.
Fixes #13923
Change-Id: I5290599f5edea8abf8fb18036f44fa78bd1fc9e6
Reviewed-on: https://go-review.googlesource.com/18590
Reviewed-by: Minux Ma <minux@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Diffstat (limited to 'src/database')
0 files changed, 0 insertions, 0 deletions