1 files changed, 40 insertions, 0 deletions
diff --git a/test/CodeGen/Thumb/stm-merge.ll b/test/CodeGen/Thumb/stm-merge.ll
new file mode 100644
index 0000000..76e71f4
--- /dev/null
+++ b/test/CodeGen/Thumb/stm-merge.ll
@@ -0,0 +1,40 @@
+; RUN: llc -mtriple=thumbv6m-eabi -verify-machineinstrs %s -o - | FileCheck %s
+target datalayout = "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:64-v128:64:128-a:0:32-n32-S64"
+target triple = "thumbv6m--linux-gnueabi"
+
+@d = internal unnamed_addr global i32 0, align 4
+@c = internal global i32* null, align 4
+@e = internal unnamed_addr global i32* null, align 4
+
+; Function Attrs: nounwind optsize
+define void @fn1() #0 {
+entry:
+; CHECK-LABEL: fn1:
+; CHECK: stm r[[BASE:[0-9]]]!, {{.*}}
+; CHECK-NOT: {{.*}} r[[BASE]]
+; CHECK: ldr r[[BASE]], {{.*}}
+  %g = alloca i32, align 4
+  %h = alloca i32, align 4
+  store i32 1, i32* %g, align 4
+  store i32 0, i32* %h, align 4
+  %.pr = load i32* @d, align 4
+  %cmp11 = icmp slt i32 %.pr, 1
+  br i1 %cmp11, label %for.inc.lr.ph, label %for.body5
+
+for.inc.lr.ph:                                    ; preds = %entry
+  store i32 1, i32* @d, align 4
+  br label %for.body5
+
+for.body5:                                        ; preds = %entry, %for.inc.lr.ph, %for.body5
+  %f.010 = phi i32 [ %inc7, %for.body5 ], [ 0, %for.inc.lr.ph ], [ 0, %entry ]
+  store volatile i32* %g, i32** @c, align 4
+  %inc7 = add nsw i32 %f.010, 1
+  %exitcond = icmp eq i32 %inc7, 2
+  br i1 %exitcond, label %for.end8, label %for.body5
+
+for.end8:                                         ; preds = %for.body5
+  store i32* %h, i32** @e, align 4
+  ret void
+}
+
+attributes #0 = { nounwind optsize "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }