[llvm] [DAGCombiner] Handle extending EXTRACT_VECTOR_ELTs in calculateByteProvider (PR #83963)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,17 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
+; RUN: llc < %s -mtriple=riscv64 -mattr=+v -verify-machineinstrs | FileCheck %s
+
+define i8 @or_load_combine(ptr %p) {
+; CHECK-LABEL: or_load_combine:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vsetivli zero, 2, e8, mf8, ta, ma
+; CHECK-NEXT:    vle8.v v8, (a0)
+; CHECK-NEXT:    vmv.x.s a0, v8
+; CHECK-NEXT:    ori a0, a0, 1
+; CHECK-NEXT:    ret
+entry:
+  %0 = load <2 x i8>, ptr %p
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arsenm wrote:

Use named values 

https://github.com/llvm/llvm-project/pull/83963