[Sparc] Add support for leaf functions in sparc backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182822 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/SPARC/leafproc.ll b/test/CodeGen/SPARC/leafproc.ll
new file mode 100644
index 0000000..5abdfba
--- /dev/null
+++ b/test/CodeGen/SPARC/leafproc.ll
@@ -0,0 +1,57 @@
+; RUN: llc -march=sparc -disable-sparc-leaf-proc=0 < %s | FileCheck %s
+
+; CHECK: func_nobody:
+; CHECK: jmp %o7+8
+; CHECK-NEXT: nop
+define void @func_nobody() {
+entry:
+ ret void
+}
+
+
+; CHECK: return_int_const:
+; CHECK: jmp %o7+8
+; CHECK-NEXT: or %g0, 1729, %o0
+define i32 @return_int_const() {
+entry:
+ ret i32 1729
+}
+
+; CHECK: return_double_const:
+; CHECK: sethi
+; CHECK: jmp %o7+8
+; CHECK-NEXT: ldd {{.*}}, %f0
+
+define double @return_double_const() {
+entry:
+ ret double 0.000000e+00
+}
+
+; CHECK: leaf_proc_with_args:
+; CHECK: add {{%o[0-1]}}, {{%o[0-1]}}, [[R:%[go][0-7]]]
+; CHECK: jmp %o7+8
+; CHECK-NEXT: add [[R]], %o2, %o0
+
+define i32 @leaf_proc_with_args(i32 %a, i32 %b, i32 %c) {
+entry:
+ %0 = add nsw i32 %b, %a
+ %1 = add nsw i32 %0, %c
+ ret i32 %1
+}
+
+; CHECK: leaf_proc_with_args_in_stack:
+; CHECK-DAG: ld [%sp+92], {{%[go][0-7]}}
+; CHECK-DAG: ld [%sp+96], {{%[go][0-7]}}
+; CHECK: jmp %o7+8
+; CHECK-NEXT: add {{.*}}, %o0
+define i32 @leaf_proc_with_args_in_stack(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h) {
+entry:
+ %0 = add nsw i32 %b, %a
+ %1 = add nsw i32 %0, %c
+ %2 = add nsw i32 %1, %d
+ %3 = add nsw i32 %2, %e
+ %4 = add nsw i32 %3, %f
+ %5 = add nsw i32 %4, %g
+ %6 = add nsw i32 %5, %h
+ ret i32 %6
+}