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08e4fe6c61
Add support for the RDPRU instruction on Zen2 processors. User-facing features: - Clang option -m[no-]rdpru to enable/disable the feature - Support is implicit for znver2/znver3 processors - Preprocessor symbol __RDPRU__ to indicate support - Header rdpruintrin.h to define intrinsics - "rdpru" mnemonic supported for assembler code Internal features: - Clang builtin __builtin_ia32_rdpru - IR intrinsic @llvm.x86.rdpru Differential Revision: https://reviews.llvm.org/D128934
38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
// RUN: %clang_cc1 -ffreestanding %s -triple=i686-- -target-feature +rdpru -emit-llvm -o - -Wall -Werror | FileCheck %s
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// RUN: %clang_cc1 -ffreestanding %s -triple=x86_64-- -target-feature +rdpru -emit-llvm -o - -Wall -Werror | FileCheck %s
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// RUN: %clang_cc1 -ffreestanding %s -triple=x86_64-- -target-cpu znver2 -emit-llvm -o - -Wall -Werror | FileCheck %s
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#include <x86intrin.h>
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// NOTE: This should correspond to the tests in llvm/test/CodeGen/X86/rdpru.ll
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unsigned long long test_rdpru(int regid) {
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// CHECK-LABEL: test_rdpru
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// CHECK: [[RESULT:%.*]] = call i64 @llvm.x86.rdpru(i32 %{{.*}})
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// CHECK-NEXT: ret i64 [[RESULT]]
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return __rdpru(regid);
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}
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unsigned long long test_mperf() {
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// CHECK-LABEL: test_mperf
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// CHECK: [[RESULT:%.*]] = call i64 @llvm.x86.rdpru(i32 0)
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// CHECK-NEXT: ret i64 [[RESULT]]
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return __mperf();
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}
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unsigned long long test_aperf() {
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// CHECK-LABEL: test_aperf
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// CHECK: [[RESULT:%.*]] = call i64 @llvm.x86.rdpru(i32 1)
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// CHECK-NEXT: ret i64 [[RESULT]]
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return __aperf();
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}
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void test_direct_calls_to_builtin_rdpru(int regid) {
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// CHECK: call i64 @llvm.x86.rdpru(i32 0)
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// CHECK: call i64 @llvm.x86.rdpru(i32 1)
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// CHECK: call i64 @llvm.x86.rdpru(i32 %{{.*}})
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(void) __builtin_ia32_rdpru(0);
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(void) __builtin_ia32_rdpru(1);
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(void) __builtin_ia32_rdpru(regid);
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}
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