| Issue |
55392
|
| Summary |
'#pragma float_control' is not supported on this target (AArch64)
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
rygorous
|
`#pragma float_control` is documented in the Clang extensions manual but doesn't seem to be supported on AArch64.
https://godbolt.org/z/ejYc1nYjd
I think that's the check at the top of `PragmaFloatControlHandler::HandlePragma`. I think that logic is checking for the wrong thing there.
I'm assuming the issue is that the AArch64 target doesn't have `hasStrictFP()` because it doesn't have exception trap support (or at least makes it an optional feature). This affects `#pragma float_control(except, ...)` but I don't see why `precise` should be excluded as well. As-is there seems to be no way on AArch64 to turn off fast-math like behavior via pragmas at all.
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