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[clang] Default x86-64's medium code model -mlarge-data-threshold to 65535 #67506

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Oct 4, 2023
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[clang] Default x86-64's medium code model -mlarge-data-threshold to 65535 #67506

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2 changes: 1 addition & 1 deletion clang/include/clang/Driver/Options.td
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Original file line number Diff line number Diff line change
Expand Up @@ -4250,7 +4250,7 @@ def mcmodel_EQ : Joined<["-"], "mcmodel=">, Group<m_Group>,
MarshallingInfoString<TargetOpts<"CodeModel">, [{"default"}]>;
def mlarge_data_threshold_EQ : Joined<["-"], "mlarge-data-threshold=">, Group<m_Group>,
Visibility<[ClangOption, CC1Option]>,
MarshallingInfoInt<TargetOpts<"LargeDataThreshold">>;
MarshallingInfoInt<TargetOpts<"LargeDataThreshold">, "65535">;
def mtls_size_EQ : Joined<["-"], "mtls-size=">, Group<m_Group>,
Flags<[NoXarchOption]>, Visibility<[ClangOption, CC1Option]>,
HelpText<"Specify bit size of immediate TLS offsets (AArch64 ELF only): "
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2 changes: 1 addition & 1 deletion clang/test/CodeGen/large-data-threshold.c
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Expand Up @@ -5,7 +5,7 @@
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -S %s -o - -mcmodel=medium -mlarge-data-threshold=200 | FileCheck %s --check-prefix=ASM-SMALL
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -S %s -o - -mcmodel=medium -mlarge-data-threshold=2 | FileCheck %s --check-prefix=ASM-LARGE

// IR-DEFAULT: !{i32 1, !"Large Data Threshold", i64 0}
// IR-DEFAULT: !{i32 1, !"Large Data Threshold", i64 65535}
// IR-CUSTOM: !{i32 1, !"Large Data Threshold", i64 200}

// ASM-SMALL-NOT: movabsq
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