xref: /llvm-project/llvm/test/CodeGen/RISCV/rvv/fold-vector-cmp.ll (revision 144b2f579ef06e663cf233431d291a913b895074)
1889a99eeSLuke Lau; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2889a99eeSLuke Lau; RUN: llc -start-after codegenprepare -mtriple=riscv64 -mattr=-v -o - %s | FileCheck --check-prefix=CHECK-NOV %s
3889a99eeSLuke Lau; RUN: llc -start-after codegenprepare -mtriple=riscv64 -mattr=+v -o - %s | FileCheck --check-prefix=CHECK-V %s
4889a99eeSLuke Lau
5889a99eeSLuke Lau; Reproducer for https://github.com/llvm/llvm-project/issues/55168.
6889a99eeSLuke Lau; We should always return 1 (and not -1).
7889a99eeSLuke Laudefine i32 @test(i32 %call.i) {
8889a99eeSLuke Lau; CHECK-NOV-LABEL: test:
9889a99eeSLuke Lau; CHECK-NOV:       # %bb.0:
10889a99eeSLuke Lau; CHECK-NOV-NEXT:    li a0, 1
11889a99eeSLuke Lau; CHECK-NOV-NEXT:    ret
12889a99eeSLuke Lau;
13889a99eeSLuke Lau; CHECK-V-LABEL: test:
14889a99eeSLuke Lau; CHECK-V:       # %bb.0:
15889a99eeSLuke Lau; CHECK-V-NEXT:    vsetivli zero, 2, e32, mf2, ta, ma
16*144b2f57SPhilip Reames; CHECK-V-NEXT:    vmv.v.x v8, a0
179fc5af1bSPhilip Reames; CHECK-V-NEXT:    lui a0, 524288
189fc5af1bSPhilip Reames; CHECK-V-NEXT:    vslide1down.vx v8, v8, a0
1986240751SPhilip Reames; CHECK-V-NEXT:    addi a0, a0, 2
209fc5af1bSPhilip Reames; CHECK-V-NEXT:    vmslt.vx v0, v8, a0
21889a99eeSLuke Lau; CHECK-V-NEXT:    vmv.v.i v8, 0
22889a99eeSLuke Lau; CHECK-V-NEXT:    vmerge.vim v8, v8, 1, v0
23889a99eeSLuke Lau; CHECK-V-NEXT:    vslidedown.vi v8, v8, 1
24889a99eeSLuke Lau; CHECK-V-NEXT:    vmv.x.s a0, v8
25889a99eeSLuke Lau; CHECK-V-NEXT:    ret
26889a99eeSLuke Lau  %t2 = insertelement <2 x i32> <i32 poison, i32 -2147483648>, i32 %call.i, i64 0
27889a99eeSLuke Lau  %t3 = icmp slt <2 x i32> %t2, <i32 -2147483646, i32 -2147483646>
28889a99eeSLuke Lau  %t4 = zext <2 x i1> %t3 to <2 x i32>
29889a99eeSLuke Lau  %t6 = extractelement <2 x i32> %t4, i64 1
30889a99eeSLuke Lau  ret i32 %t6
31889a99eeSLuke Lau}
32