Segmented stacks: omit __morestack call when there's no frame.
Patch by Florian Zeitz
llvm-svn: 209436
diff --git a/llvm/test/CodeGen/Thumb/segmented-stacks.ll b/llvm/test/CodeGen/Thumb/segmented-stacks.ll
index 89043ec..d6e25c7 100644
--- a/llvm/test/CodeGen/Thumb/segmented-stacks.ll
+++ b/llvm/test/CodeGen/Thumb/segmented-stacks.ll
@@ -57,6 +57,8 @@
define i32 @test_nested(i32 * nest %closure, i32 %other) #0 {
%addend = load i32 * %closure
%result = add i32 %other, %addend
+ %mem = alloca i32, i32 10
+ call void @dummy_use (i32* %mem, i32 10)
ret i32 %result
; Thumb-android: test_nested:
@@ -68,7 +70,7 @@
; Thumb-android-NEXT: cmp r4, r5
; Thumb-android-NEXT: blo .LBB1_2
-; Thumb-android: mov r4, #0
+; Thumb-android: mov r4, #56
; Thumb-android-NEXT: mov r5, #0
; Thumb-android-NEXT: push {lr}
; Thumb-android-NEXT: bl __morestack
@@ -88,7 +90,7 @@
; Thumb-linux-NEXT: cmp r4, r5
; Thumb-linux-NEXT: blo .LBB1_2
-; Thumb-linux: mov r4, #0
+; Thumb-linux: mov r4, #56
; Thumb-linux-NEXT: mov r5, #0
; Thumb-linux-NEXT: push {lr}
; Thumb-linux-NEXT: bl __morestack
@@ -246,4 +248,14 @@
}
+define void @test_nostack() #0 {
+ ret void
+
+; Thumb-android-LABEL: test_nostack:
+; Thumb-android-NOT: bl __morestack
+
+; Thumb-linux-LABEL: test_nostack:
+; Thumb-linux-NOT: bl __morestack
+}
+
attributes #0 = { "split-stack" }