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[clang] Add -mlarge-data-threshold for x86_64 medium code model (#66839)
Error if not used with x86_64. Warn if not used with the medium code model (can update if other code models end up using this). Set TargetMachine option and add module flag.
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// REQUIRES: x86-registered-target | ||
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm %s -o - -mcmodel=medium | FileCheck %s --check-prefix=IR-DEFAULT | ||
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm %s -o - -mcmodel=medium -mlarge-data-threshold=200 | FileCheck %s --check-prefix=IR-CUSTOM | ||
// 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 | ||
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// IR-DEFAULT: !{i32 1, !"Large Data Threshold", i64 0} | ||
// IR-CUSTOM: !{i32 1, !"Large Data Threshold", i64 200} | ||
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// ASM-SMALL-NOT: movabsq | ||
// ASM-LARGE: movabsq | ||
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static int i; | ||
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int f() { | ||
return i; | ||
} | ||
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// RUN: %clang --target=x86_64 -### -c -mcmodel=medium -mlarge-data-threshold=200 %s 2>&1 | FileCheck --check-prefix=ARG %s | ||
// RUN: %clang --target=x86_64 -### -c -mcmodel=small -mlarge-data-threshold=200 %s 2>&1 | FileCheck --check-prefix=SMALL %s | ||
// RUN: not %clang --target=riscv32 -### -c -mcmodel=medium -mlarge-data-threshold=200 %s 2>&1 | FileCheck --check-prefix=ARCH %s | ||
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// ARG: "-mlarge-data-threshold=200" | ||
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// SMALL: 'mlarge-data-threshold=' only applies to medium code model | ||
// ARCH: unsupported option 'mlarge-data-threshold=' for target 'riscv32' |