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 8 define 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 27 define 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 43 define 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: movl %ecx, (%rdi) 60 ; X64-NEXT: shlq $32, %rdx 61 ; X64-NEXT: orq %rdx, %rax 62 ; X64-NEXT: retq 63 %1 = tail call i64 @llvm.x86.rdtscp(i8* %A) 64 ret i64 %1 65 } 66 67 declare i64 @llvm.readcyclecounter() 68 declare i64 @llvm.x86.rdtscp(i8*) 69 declare i64 @llvm.x86.rdtsc() 70 71
