Fix a broadcast related regression on the vector shuffle lowering.

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

diff --git a/test/CodeGen/X86/empty-functions.ll b/test/CodeGen/X86/empty-functions.ll
index 41dabd2bf7099194a4f152d619357068d241849f..42349688a710747e46a77e24a57d034716122691 100644 (file)
--- a/test/CodeGen/X86/empty-functions.ll
+++ b/test/CodeGen/X86/empty-functions.ll
@@ -1,14 +1,17 @@
 ; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck -check-prefix=CHECK-NO-FP %s
 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -disable-fp-elim | FileCheck -check-prefix=CHECK-FP %s
+; RUN: llc < %s -mtriple=x86_64-linux-gnu | FileCheck -check-prefix=LINUX-NO-FP %s
+; RUN: llc < %s -mtriple=x86_64-linux-gnu -disable-fp-elim | FileCheck -check-prefix=LINUX-FP %s
 
 define void @func() {
 entry:
   unreachable
 }
+
+; MachO cannot handle an empty function.
 ; CHECK-NO-FP:     _func:
 ; CHECK-NO-FP-NEXT: .cfi_startproc
 ; CHECK-NO-FP:     nop
-; CHECK-NO-FP-NEXT: :
 ; CHECK-NO-FP-NEXT: .cfi_endproc
 
 ; CHECK-FP:      _func:
@@ -22,6 +25,30 @@ entry:
 ; CHECK-FP-NEXT: movq %rsp, %rbp
 ; CHECK-FP-NEXT: :
 ; CHECK-FP-NEXT: .cfi_def_cfa_register %rbp
-; CHECK-FP-NEXT: nop
-; CHECK-FP-NEXT: :
 ; CHECK-FP-NEXT: .cfi_endproc
+
+; An empty function is perfectly fine on ELF.
+; LINUX-NO-FP: func:
+; LINUX-NO-FP-NEXT: .cfi_startproc
+; LINUX-NO-FP-NEXT: {{^}}#
+; LINUX-NO-FP-NEXT: {{^}}.L{{.*}}:{{$}}
+; LINUX-NO-FP-NEXT: .size   func, .L{{.*}}-func
+; LINUX-NO-FP-NEXT: .cfi_endproc
+
+; A cfi directive can point to the end of a function. It (and in fact the
+; entire body) could be optimized out because of the unreachable, but we
+; don't do it right now.
+; LINUX-FP: func:
+; LINUX-FP-NEXT: .cfi_startproc
+; LINUX-FP-NEXT: {{^}}#
+; LINUX-FP-NEXT: pushq %rbp
+; LINUX-FP-NEXT: {{^}}.L{{.*}}:{{$}}
+; LINUX-FP-NEXT:  .cfi_def_cfa_offset 16
+; LINUX-FP-NEXT: {{^}}.L{{.*}}:{{$}}
+; LINUX-FP-NEXT: .cfi_offset %rbp, -16
+; LINUX-FP-NEXT: movq        %rsp, %rbp
+; LINUX-FP-NEXT:{{^}}.L{{.*}}:{{$}}
+; LINUX-FP-NEXT: .cfi_def_cfa_register %rbp
+; LINUX-FP-NEXT:{{^}}.L{{.*}}:{{$}}
+; LINUX-FP-NEXT: .size   func, .Ltmp3-func
+; LINUX-FP-NEXT: .cfi_endproc