Lucas Prates f56550cf7f [ARM] Enabling range checks on Neon intrinsics' lane arguments ...

Summary:
Range checks were not properly performed in the lane arguments of Neon
intrinsics implemented based on splat operations. Calls to those
intrinsics where translated to `__builtin__shufflevector` calls directly
by the pre-processor through the arm_neon.h macros, missing the chance
for the proper range checks.

This patch enables the range check by introducing an auxiliary splat
instruction in arm_neon.td, delaying the translation to shufflevector
calls to CGBuiltin.cpp in clang after the checks were performed.

Reviewers: jmolloy, t.p.northover, rsmith, olista01, ostannard

Reviewed By: ostannard

Subscribers: ostannard, dnsampaio, danielkiss, kristof.beyls, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D74619

2020-03-19 12:07:23 +00:00

194 KiB

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