[PowerPC] Pre-commit reduced test case for PR45297. NFC.

(cherry picked from commit 70f9f4d)

Author: Kai Luo

llvm/test/CodeGen/PowerPC/pr45297.ll

@@ -0,0 +1,10 @@
+; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu \
+; RUN:   -mattr=+altivec -mattr=-power8-vector -mattr=-vsx < %s | FileCheck %s
+; XFAIL: *
+
+define dso_local void @test(float %0) local_unnamed_addr {
+entry:
+  %1 = fptosi float %0 to i32
+  store i32 %1, i32* undef, align 4
+  ret void
+}