29 lines
914 B
LLVM
29 lines
914 B
LLVM
|
; 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
|
||
|
|
}
|