| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefix=RV32I %s |
| ; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck -check-prefix=RV64I %s |
| |
| ; Verify that we lower @llvm.readcyclecounter() correctly. |
| |
| declare i64 @llvm.readcyclecounter() |
| |
| define i64 @test_builtin_readcyclecounter() nounwind { |
| ; RV32I-LABEL: test_builtin_readcyclecounter: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: .LBB0_1: # =>This Inner Loop Header: Depth=1 |
| ; RV32I-NEXT: rdcycleh a1 |
| ; RV32I-NEXT: rdcycle a0 |
| ; RV32I-NEXT: rdcycleh a2 |
| ; RV32I-NEXT: bne a1, a2, .LBB0_1 |
| ; RV32I-NEXT: # %bb.2: |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: test_builtin_readcyclecounter: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: rdcycle a0 |
| ; RV64I-NEXT: ret |
| %1 = tail call i64 @llvm.readcyclecounter() |
| ret i64 %1 |
| } |