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Disable llvm generating 128-bit multiply libcalls on 32-bit ARM

Description

Disable llvm generating 128-bit multiply libcalls on 32-bit ARM

Merge commit 789708617d20 from llvm git (Koutheir Attouchi):

Do not generate calls to the 128-bit function __multi3() on 32-bit ARM

Re-applying this patch after bots failures. Should be fine now.

The function __multi3() is undefined on 32-bit ARM, so a call to it should
never be emitted. Instead, plain instructions need to be generated to
perform 128-bit multiplications.

Differential Revision: https://reviews.llvm.org/D103906

Reported by: mmel

(cherry picked from commit 014a40f8f643a5dad6a6ba5c4bf6ea5d4f445fe6)

Details

Provenance
dimAuthored on Jun 22 2021, 8:26 PM
Parents
rG1ed4655d9d5a: Fix clang assertion while building recent www/chromium
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