[PATCH] D55897: Add constrained fptrunc and fpext intrinsics

[Connor Abbott via Phabricator via llvm-commits]

cwabbott added inline comments.


================
Comment at: docs/LangRef.rst:14529
+      @llvm.experimental.constrained.fptrunc(<type> <value>,
+                                          metadata <exception behavior>)
+
----------------
Hi,

I've been working on implementing a Vulkan extension which allows the user to specifiy different rounding modes for the AMDGPU backend. I'm not sure how this works in C/C++, but we're required to support floating-point truncation with non-standard rounding modes. Is there a reason the rounding mode isn't an argument here?


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  https://reviews.llvm.org/D55897/new/

https://reviews.llvm.org/D55897