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