xref: /llvm-project/llvm/test/CodeGen/RISCV/pr95284.ll (revision 9fb4bc5bf4ecdc8f53bd1b8eeea20390fb6e642e)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s | FileCheck -check-prefix=RV32I %s
3; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s | FileCheck -check-prefix=RV64I %s
4
5; regression due to creation of temporary i32 avgfloors node
6define signext i64 @PR95284(i32 signext %0) {
7; RV32I-LABEL: PR95284:
8; RV32I:       # %bb.0: # %entry
9; RV32I-NEXT:    addi a1, a0, -1
10; RV32I-NEXT:    seqz a0, a0
11; RV32I-NEXT:    slli a2, a0, 31
12; RV32I-NEXT:    srli a1, a1, 1
13; RV32I-NEXT:    or a1, a1, a2
14; RV32I-NEXT:    addi a1, a1, 1
15; RV32I-NEXT:    seqz a2, a1
16; RV32I-NEXT:    sub a2, a2, a0
17; RV32I-NEXT:    andi a0, a1, -2
18; RV32I-NEXT:    slli a1, a2, 1
19; RV32I-NEXT:    srli a1, a1, 1
20; RV32I-NEXT:    ret
21;
22; RV64I-LABEL: PR95284:
23; RV64I:       # %bb.0: # %entry
24; RV64I-NEXT:    addi a0, a0, -1
25; RV64I-NEXT:    srli a0, a0, 1
26; RV64I-NEXT:    addi a0, a0, 1
27; RV64I-NEXT:    andi a0, a0, -2
28; RV64I-NEXT:    ret
29entry:
30  %1 = zext nneg i32 %0 to i64
31  %2 = add nsw i64 %1, -1
32  %3 = lshr i64 %2, 1
33  %4 = add nuw nsw i64 %3, 1
34  %5 = and i64 %4, 9223372036854775806
35  ret i64 %5
36}
37