xref: /llvm-project/llvm/test/CodeGen/RISCV/readsteadycounter.ll (revision b8ed69ecc01385c03844e8fa05ba418a5670d322)
1*b8ed69ecSWang Pengcheng; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2*b8ed69ecSWang Pengcheng; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
3*b8ed69ecSWang Pengcheng; RUN:   | FileCheck -check-prefix=RV32I %s
4*b8ed69ecSWang Pengcheng; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
5*b8ed69ecSWang Pengcheng; RUN:   | FileCheck -check-prefix=RV64I %s
6*b8ed69ecSWang Pengcheng
7*b8ed69ecSWang Pengcheng; Verify that we lower @llvm.readsteadycounter() correctly.
8*b8ed69ecSWang Pengcheng
9*b8ed69ecSWang Pengchengdeclare i64 @llvm.readsteadycounter()
10*b8ed69ecSWang Pengcheng
11*b8ed69ecSWang Pengchengdefine i64 @test_builtin_readsteadycounter() nounwind {
12*b8ed69ecSWang Pengcheng; RV32I-LABEL: test_builtin_readsteadycounter:
13*b8ed69ecSWang Pengcheng; RV32I:       # %bb.0:
14*b8ed69ecSWang Pengcheng; RV32I-NEXT:  .LBB0_1: # =>This Inner Loop Header: Depth=1
15*b8ed69ecSWang Pengcheng; RV32I-NEXT:    rdtimeh a1
16*b8ed69ecSWang Pengcheng; RV32I-NEXT:    rdtime a0
17*b8ed69ecSWang Pengcheng; RV32I-NEXT:    rdtimeh a2
18*b8ed69ecSWang Pengcheng; RV32I-NEXT:    bne a1, a2, .LBB0_1
19*b8ed69ecSWang Pengcheng; RV32I-NEXT:  # %bb.2:
20*b8ed69ecSWang Pengcheng; RV32I-NEXT:    ret
21*b8ed69ecSWang Pengcheng;
22*b8ed69ecSWang Pengcheng; RV64I-LABEL: test_builtin_readsteadycounter:
23*b8ed69ecSWang Pengcheng; RV64I:       # %bb.0:
24*b8ed69ecSWang Pengcheng; RV64I-NEXT:    rdtime a0
25*b8ed69ecSWang Pengcheng; RV64I-NEXT:    ret
26*b8ed69ecSWang Pengcheng  %1 = tail call i64 @llvm.readsteadycounter()
27*b8ed69ecSWang Pengcheng  ret i64 %1
28*b8ed69ecSWang Pengcheng}
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