tree 81ca19ad9b85e5ba6fe246169fb006744eb93403
parent 820385076fb727295232926a926402f65e1fe2f1
author Thomas Lively <tlively@google.com> 1571101911 +0000
committer Thomas Lively <tlively@google.com> 1571101911 +0000

[WebAssembly] Trapping fptoint builtins and intrinsics

Summary:
The WebAssembly backend lowers fptoint instructions to a code sequence
that checks for overflow to avoid traps because fptoint is supposed to
be speculatable. These new builtins and intrinsics give users a way to
depend on the trapping semantics of the underlying instructions and
avoid the extra code generated normally.

Patch by coffee and tlively.

Reviewers: aheejin

Subscribers: dschuff, sbc100, jgravelle-google, hiraditya, sunfish, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D68902

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@374856 91177308-0d34-0410-b5e6-96231b3b80d8