[llvm] fix a assert on the PR 125883 (PR #135056)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,19 @@
+; RUN: llc < %s -mtriple=riscv32  | FileCheck %s
+
+define void @b(ptr %p1)  {
+; CHECK:        .cfi_startproc
+; CHECK-NEXT: # %bb.0:                                # %entry
+; CHECK-NEXT:   sb      zero, 7(a0)
+; CHECK-NEXT:   sb      zero, 6(a0)
+; CHECK-NEXT:   sb      zero, 5(a0)
+; CHECK-NEXT:   sb      a0, 4(a0)
+; CHECK-NEXT:   sb      zero, 3(a0)
+; CHECK-NEXT:   sb      zero, 2(a0)
+; CHECK-NEXT:   sb      zero, 1(a0)
+; CHECK-NEXT:   sb      a0, 0(a0)
+; CHECK-NEXT:   ret
+
+entry:
+  store volatile double poison, ptr %p1, align 1
+  ret void
+}
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arsenm wrote:

Test vector cases? 

https://github.com/llvm/llvm-project/pull/135056