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Offer -ffast-math option(s) #722

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Trass3r opened this issue Sep 22, 2014 · 4 comments
Closed

Offer -ffast-math option(s) #722

Trass3r opened this issue Sep 22, 2014 · 4 comments

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@Trass3r
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Trass3r commented Sep 22, 2014

Important for auto-vectorization for example.
@dnadlinger
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Just a note, this was discussed in some detail on the mailing list already (IIRC John Colvin brought it up a few weeks/months ago). The main thing that is needed is a decision on a sane command line interface (GCC's is a mess for historic reasons, IIRC). The actual implementation should be trivial (just set the necessary target options).

@Trass3r
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Trass3r commented Sep 23, 2014

clang's interface is a bit more differentiated I think.
The implementation isn't that trivial cause the flags are reset inside llvm based on function attributes set by clang and caused problems last time I tried it IIRC.

redstar pushed a commit that referenced this issue Sep 27, 2014
@yebblies
Merge pull request #722 from denis-sh/fix-issue-12136
29a05b0 
Fix Issue 12136 - [AA] Associative array `keys` and `values` become non-properties.
@redstar
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redstar commented Nov 13, 2014

See pull request #789. This does not solve the decision about a sane command lline interface...

redstar added a commit to redstar/ldc that referenced this issue Nov 13, 2014
@redstar
Add various math options.
7842d9e 
New options are: -enable-fp-mad, -enable-unsafe-fp-math, -enable-no-infs-fp-math,
-enable-no-nans-fp-math and -enable-sign-dependent-rounding-fp-math.

This fixes issue ldc-developers#722. It does not solve the question about good command line interfacing.
@kinke
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kinke commented Oct 22, 2017

LDC 1.5 uses the default LLVM codegen options, among which there are -fp-contract, -enable-unsafe-fp-math, -enable-fp-mad, -enable-no-infs-fp-math, -enable-no-nans-fp-math, -enable-no-trapping-fp-math, -denormal-fp-math, -recip.

@kinke kinke closed this as completed Oct 22, 2017
@thewilsonator thewilsonator mentioned this issue Jun 6, 2022
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4 participants
@dnadlinger @Trass3r @redstar @kinke