Merging r257925, r257929, r257930, and r257997:

[oota-llvm.git] / test / CodeGen / X86 / cxx_tlscc64.ll

diff --git a/test/CodeGen/X86/cxx_tlscc64.ll b/test/CodeGen/X86/cxx_tlscc64.ll
index 70fe501040bf74888d583e7a942411f9e1dee4a0..6c8e45e42d156913b25f787ca9e8e74493aff54b 100644 (file)
--- a/test/CodeGen/X86/cxx_tlscc64.ll
+++ b/test/CodeGen/X86/cxx_tlscc64.ll
@@ -4,11 +4,13 @@
 ; tricks similar to AArch64 fast TLS calling convention (r255821).
 ; Applying tricks on x86-64 similar to r255821.
 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -enable-shrink-wrap=true | FileCheck %s
+; RUN: llc < %s -mtriple=x86_64-apple-darwin -O0 | FileCheck %s --check-prefix=CHECK-O0
 %struct.S = type { i8 }
 
 @sg = internal thread_local global %struct.S zeroinitializer, align 1
 @__dso_handle = external global i8
 @__tls_guard = internal thread_local unnamed_addr global i1 false
+@sum1 = internal thread_local global i32 0, align 4
 
 declare void @_ZN1SC1Ev(%struct.S*)
 declare void @_ZN1SD1Ev(%struct.S*)
@@ -50,3 +52,28 @@ init.i:
 __tls_init.exit:
   ret %struct.S* @sg
 }
+
+; CHECK-LABEL: _ZTW4sum1
+; CHECK-NOT: pushq %r11
+; CHECK-NOT: pushq %r10
+; CHECK-NOT: pushq %r9
+; CHECK-NOT: pushq %r8
+; CHECK-NOT: pushq %rsi
+; CHECK-NOT: pushq %rdx
+; CHECK-NOT: pushq %rcx
+; CHECK-NOT: pushq %rbx
+; CHECK: callq
+define cxx_fast_tlscc nonnull i32* @_ZTW4sum1() nounwind {
+  ret i32* @sum1
+}
+
+; Make sure at O0 we don't overwrite RBP.
+; CHECK-O0-LABEL: _ZTW4sum2
+; CHECK-O0: pushq %rbp
+; CHECK-O0: movq %rsp, %rbp
+; CHECK-O0-NOT: movq %r{{.*}}, (%rbp) 
+define cxx_fast_tlscc i32* @_ZTW4sum2() #0 {
+  ret i32* @sum1
+}
+
+attributes #0 = { nounwind "no-frame-pointer-elim"="true" }