[llvm] [RISCV] Fold vmnot.m of an integer compare into the compare (PR #222553)

[Marton Moro via llvm-commits]

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@@ -0,0 +1,66 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs < %s | FileCheck %s
+; RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs < %s | FileCheck %s
+
+define i1 @reduce_and_trunc_v8i8(ptr %p) {
+; CHECK-LABEL: reduce_and_trunc_v8i8:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 8, e8, mf2, ta, ma
+; CHECK-NEXT:    vle8.v v8, (a0)
+; CHECK-NEXT:    vand.vi v8, v8, 1
+; CHECK-NEXT:    vmseq.vi v8, v8, 0
+; CHECK-NEXT:    vcpop.m a0, v8
+; CHECK-NEXT:    seqz a0, a0
+; CHECK-NEXT:    ret
+  %v = load <8 x i8>, ptr %p
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martonmoro wrote:

Nope, not needed, I copied the repro from the issue. I'll switch the tests to take the vector as an argument. 

https://github.com/llvm/llvm-project/pull/222553