Pre-commit test case

Author: topperc

llvm/test/CodeGen/RISCV/zalasr-offset-folding.ll

@@ -0,0 +1,23 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -mtriple=riscv32 -mattr=+a,+experimental-zalasr | FileCheck %s
+
+; FIXME: We should not fold -1920 into the lw instruction because we still
+; need it for the sw.rl.
+
+define i32 @test(ptr %p) {
+; CHECK-LABEL: test:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    lui a1, 20
+; CHECK-NEXT:    add a2, a0, a1
+; CHECK-NEXT:    addi a1, a1, -1920
+; CHECK-NEXT:    add a0, a0, a1
+; CHECK-NEXT:    li a1, 2
+; CHECK-NEXT:    sw.rl a1, (a0)
+; CHECK-NEXT:    lw a0, -1920(a2)
+; CHECK-NEXT:    ret
+entry:
+  %gep0 = getelementptr [65536 x i32], ptr %p, i64 0, i32 20000
+  store atomic i32 2, ptr %gep0 seq_cst, align 4
+  %a = load i32, ptr %gep0
+  ret i32 %a
+}