1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=i686-unknown-unknown -mcpu=generic | FileCheck %s --check-prefix=X86 3; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=generic | FileCheck %s --check-prefix=X64 4 5; Verify that we correctly lower ISD::READCYCLECOUNTER. 6 7 8define i64 @test_builtin_readcyclecounter() { 9; X86-LABEL: test_builtin_readcyclecounter: 10; X86: # %bb.0: 11; X86-NEXT: rdtsc 12; X86-NEXT: retl 13; 14; X64-LABEL: test_builtin_readcyclecounter: 15; X64: # %bb.0: 16; X64-NEXT: rdtsc 17; X64-NEXT: shlq $32, %rdx 18; X64-NEXT: orq %rdx, %rax 19; X64-NEXT: retq 20 %1 = tail call i64 @llvm.readcyclecounter() 21 ret i64 %1 22} 23 24; Verify that we correctly lower the Read Cycle Counter GCC x86 builtins 25; (i.e. RDTSC and RDTSCP). 26 27define i64 @test_builtin_rdtsc() { 28; X86-LABEL: test_builtin_rdtsc: 29; X86: # %bb.0: 30; X86-NEXT: rdtsc 31; X86-NEXT: retl 32; 33; X64-LABEL: test_builtin_rdtsc: 34; X64: # %bb.0: 35; X64-NEXT: rdtsc 36; X64-NEXT: shlq $32, %rdx 37; X64-NEXT: orq %rdx, %rax 38; X64-NEXT: retq 39 %1 = tail call i64 @llvm.x86.rdtsc() 40 ret i64 %1 41} 42 43define i64 @test_builtin_rdtscp(i8* %A) { 44; X86-LABEL: test_builtin_rdtscp: 45; X86: # %bb.0: 46; X86-NEXT: pushl %esi 47; X86-NEXT: .cfi_def_cfa_offset 8 48; X86-NEXT: .cfi_offset %esi, -8 49; X86-NEXT: movl {{[0-9]+}}(%esp), %esi 50; X86-NEXT: rdtscp 51; X86-NEXT: movl %ecx, (%esi) 52; X86-NEXT: popl %esi 53; X86-NEXT: .cfi_def_cfa_offset 4 54; X86-NEXT: retl 55; 56; X64-LABEL: test_builtin_rdtscp: 57; X64: # %bb.0: 58; X64-NEXT: rdtscp 59; X64-NEXT: shlq $32, %rdx 60; X64-NEXT: orq %rdx, %rax 61; X64-NEXT: movl %ecx, (%rdi) 62; X64-NEXT: retq 63 %1 = call { i64, i32 } @llvm.x86.rdtscp() 64 %2 = extractvalue { i64, i32 } %1, 1 65 %3 = bitcast i8* %A to i32* 66 store i32 %2, i32* %3, align 1 67 %4 = extractvalue { i64, i32 } %1, 0 68 ret i64 %4 69} 70 71declare i64 @llvm.readcyclecounter() 72declare { i64, i32 } @llvm.x86.rdtscp() 73declare i64 @llvm.x86.rdtsc() 74 75