1 files changed, 62 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/segmented-stacks-dynamic.ll b/test/CodeGen/ARM/segmented-stacks-dynamic.ll
new file mode 100644
index 0000000..13b5bcf
--- /dev/null
+++ b/test/CodeGen/ARM/segmented-stacks-dynamic.ll
@@ -0,0 +1,62 @@
+; RUN: llc < %s -mtriple=arm-linux-androideabi -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=ARM-android
+; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=ARM-linux
+; RUN: llc < %s -mtriple=arm-linux-androideabi -segmented-stacks -filetype=obj
+; RUN: llc < %s -mtriple=arm-linux-unknown-gnueabi -segmented-stacks -filetype=obj
+
+; Just to prevent the alloca from being optimized away
+declare void @dummy_use(i32*, i32)
+
+define i32 @test_basic(i32 %l) {
+        %mem = alloca i32, i32 %l
+        call void @dummy_use (i32* %mem, i32 %l)
+        %terminate = icmp eq i32 %l, 0
+        br i1 %terminate, label %true, label %false
+
+true:
+        ret i32 0
+
+false:
+        %newlen = sub i32 %l, 1
+        %retvalue = call i32 @test_basic(i32 %newlen)
+        ret i32 %retvalue
+
+; ARM-linux:      test_basic:
+
+; ARM-linux:      push    {r4, r5}
+; ARM-linux-NEXT: mrc     p15, #0, r4, c13, c0, #3
+; ARM-linux-NEXT: mov     r5, sp
+; ARM-linux-NEXT: ldr     r4, [r4, #4]
+; ARM-linux-NEXT: cmp     r4, r5
+; ARM-linux-NEXT: blo     .LBB0_2
+
+; ARM-linux:      mov     r4, #24
+; ARM-linux-NEXT: mov     r5, #0
+; ARM-linux-NEXT: stmdb   sp!, {lr}
+; ARM-linux-NEXT: bl      __morestack
+; ARM-linux-NEXT: ldm     sp!, {lr}
+; ARM-linux-NEXT: pop     {r4, r5}
+; ARM-linux-NEXT: bx      lr
+
+; ARM-linux:      pop     {r4, r5}
+
+
+; ARM-android:      test_basic:
+
+; ARM-android:      push    {r4, r5}
+; ARM-android-NEXT: mrc     p15, #0, r4, c13, c0, #3
+; ARM-android-NEXT: mov     r5, sp
+; ARM-android-NEXT: ldr     r4, [r4, #252]
+; ARM-android-NEXT: cmp     r4, r5
+; ARM-android-NEXT: blo     .LBB0_2
+
+; ARM-android:      mov     r4, #24
+; ARM-android-NEXT: mov     r5, #0
+; ARM-android-NEXT: stmdb   sp!, {lr}
+; ARM-android-NEXT: bl      __morestack
+; ARM-android-NEXT: ldm     sp!, {lr}
+; ARM-android-NEXT: pop     {r4, r5}
+; ARM-android-NEXT: bx      lr
+
+; ARM-android:      pop     {r4, r5}
+
+}