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21 lines
700 B
21 lines
700 B
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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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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; This test case is significantly simplified from the submitted .ll but
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; demonstrates the same issue. At the time of this problem report, an infinite
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; loop would be created in DAGCombine, converting ANY_EXTEND to SIGN_EXTEND
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; and back again.
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define signext i8 @foo(i32 %a, i32 %b) nounwind {
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; RV64I-LABEL: foo:
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; RV64I: # %bb.0:
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; RV64I-NEXT: srlw a0, a0, a1
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; RV64I-NEXT: slli a0, a0, 56
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; RV64I-NEXT: srai a0, a0, 56
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; RV64I-NEXT: ret
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%1 = lshr i32 %a, %b
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%2 = trunc i32 %1 to i8
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ret i8 %2
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}
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