llvm/test/CodeGen/X86/pr11202.ll

; RUN: llc < %s -mtriple=x86_64-pc-linux | FileCheck %s

@bb = constant [1 x i8*] [i8* blockaddress(@main, %l2)]

define void @main() {
entry:
  br label %l1

l1:                                               ; preds = %l2, %entry
  %a = zext i1 false to i32
  br label %l2

l2:                                               ; preds = %l1
  %b = zext i1 false to i32
  br label %l1
}

; CHECK: .Ltmp0:                                 # Address of block that was removed by CodeGen
; CHECK: .quad	.Ltmp0
We currently use a callback to handle an IL pass deleting a BB that still has a reference to it. Unfortunately, that doesn't work for codegen passes since we don't get notified of MBB's being deleted (the original BB stays). Use that fact to our advantage and after printing a function, check if any of the IL BBs corresponds to a symbol that was not printed. This fixes pr11202. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144674 91177308-0d34-0410-b5e6-96231b3b80d8 2011-11-15 19:08:46 +00:00			`; RUN: llc < %s -mtriple=x86_64-pc-linux \| FileCheck %s`

			`@bb = constant [1 x i8] [i8 blockaddress(@main, %l2)]`

			`define void @main() {`
			`entry:`
			`br label %l1`

			`l1: ; preds = %l2, %entry`
			`%a = zext i1 false to i32`
			`br label %l2`

			`l2: ; preds = %l1`
			`%b = zext i1 false to i32`
			`br label %l1`
			`}`

Don't print a label before .cfi_startproc when we don't need to. This makes the produce assembly when using CFI just a bit more readable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147743 91177308-0d34-0410-b5e6-96231b3b80d8 2012-01-07 22:42:19 +00:00			`; CHECK: .Ltmp0: # Address of block that was removed by CodeGen`
			`; CHECK: .quad .Ltmp0`