1 files changed, 37 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/regress-w29-reserved-with-fp.ll b/test/CodeGen/AArch64/regress-w29-reserved-with-fp.ll
new file mode 100644
index 0000000000..98bd92b06c
--- /dev/null
+++ b/test/CodeGen/AArch64/regress-w29-reserved-with-fp.ll
@@ -0,0 +1,37 @@
+; RUN: llc -march=aarch64 -disable-fp-elim < %s | FileCheck %s
+@var = global i32 0
+
+declare void @bar()
+
+define void @test_w29_reserved() {
+; CHECK: test_w29_reserved:
+; CHECK add x29, sp, #{{[0-9]+}}
+
+  %val1 = load volatile i32* @var
+  %val2 = load volatile i32* @var
+  %val3 = load volatile i32* @var
+  %val4 = load volatile i32* @var
+  %val5 = load volatile i32* @var
+  %val6 = load volatile i32* @var
+  %val7 = load volatile i32* @var
+  %val8 = load volatile i32* @var
+  %val9 = load volatile i32* @var
+
+; CHECK-NOT: ldr w29,
+
+  ; Call to prevent fp-elim that occurs regardless in leaf functions.
+  call void @bar()
+
+  store volatile i32 %val1,  i32* @var
+  store volatile i32 %val2,  i32* @var
+  store volatile i32 %val3,  i32* @var
+  store volatile i32 %val4,  i32* @var
+  store volatile i32 %val5,  i32* @var
+  store volatile i32 %val6,  i32* @var
+  store volatile i32 %val7,  i32* @var
+  store volatile i32 %val8,  i32* @var
+  store volatile i32 %val9,  i32* @var
+
+  ret void
+; CHECK: ret
+}