Date: Fri, 25 Jun 2021 17:33:00 GMT From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 1adf1b31582d - stable/12 - Disable llvm generating 128-bit multiply libcalls on 32-bit ARM Message-ID: <202106251733.15PHX0Ko099189@gitrepo.freebsd.org>
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The branch stable/12 has been updated by dim: URL: https://cgit.FreeBSD.org/src/commit/?id=1adf1b31582d9c311ff9166994bd6e4db7fb7e9e commit 1adf1b31582d9c311ff9166994bd6e4db7fb7e9e Author: Dimitry Andric <dim@FreeBSD.org> AuthorDate: 2021-06-22 20:26:13 +0000 Commit: Dimitry Andric <dim@FreeBSD.org> CommitDate: 2021-06-25 17:31:27 +0000 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) --- contrib/llvm-project/llvm/lib/Target/ARM/ARMISelLowering.cpp | 1 + 1 file changed, 1 insertion(+) diff --git a/contrib/llvm-project/llvm/lib/Target/ARM/ARMISelLowering.cpp b/contrib/llvm-project/llvm/lib/Target/ARM/ARMISelLowering.cpp index 9f504b1eaa42..00e709292eb8 100644 --- a/contrib/llvm-project/llvm/lib/Target/ARM/ARMISelLowering.cpp +++ b/contrib/llvm-project/llvm/lib/Target/ARM/ARMISelLowering.cpp @@ -511,6 +511,7 @@ ARMTargetLowering::ARMTargetLowering(const TargetMachine &TM, setLibcallName(RTLIB::SHL_I128, nullptr); setLibcallName(RTLIB::SRL_I128, nullptr); setLibcallName(RTLIB::SRA_I128, nullptr); + setLibcallName(RTLIB::MUL_I128, nullptr); // RTLIB if (Subtarget->isAAPCS_ABI() &&
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