diff options
| author | Bernhard Schommer <bernhardschommer@gmail.com> | 2022-02-07 15:10:54 +0100 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@college-de-france.fr> | 2022-02-07 15:12:20 +0100 |
| commit | 38b0425d524cd3e7260ac46e13153f007e8bc00d (patch) | |
| tree | 987d9d3c42c6b0d7873115ec00fcdd99a714d7b5 /x86/SelectOp.vp | |
| parent | 87de3969856cf6a5eb5e1615ec817a015ed90d1c (diff) | |
| download | compcert-38b0425d524cd3e7260ac46e13153f007e8bc00d.tar.gz compcert-38b0425d524cd3e7260ac46e13153f007e8bc00d.zip | |
Add op for float max and min for x86.
The ops `Omaxf` and `Ominf` have the same semantics as `minsd` and
`maxsd` instruction, i.e. if both arguments are equal the second
argument is returned as well as for NaN.
The operations are the used in SelectOp to implement the built-in
function `__builtin_fmax` and `__builtin_fmin`.
Bug 32640
Diffstat (limited to 'x86/SelectOp.vp')
| -rw-r--r-- | x86/SelectOp.vp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/x86/SelectOp.vp b/x86/SelectOp.vp index 31be8c32..99496ba1 100644 --- a/x86/SelectOp.vp +++ b/x86/SelectOp.vp @@ -579,4 +579,8 @@ Nondetfunction builtin_arg (e: expr) := (** Platform-specific known builtins *) Definition platform_builtin (b: platform_builtin) (args: exprlist) : option expr := - None. + match b, args with + | BI_fmax, e1 ::: e2 ::: Enil => Some (Eop Omaxf (e1 ::: e2 ::: Enil)) + | BI_fmin, e1 ::: e2 ::: Enil => Some (Eop Ominf (e1 ::: e2 ::: Enil)) + | _, _ => None + end. |