maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/CodeGen/X86/tail-dup-addr.ll

29 lines
980 B
LLVM
Raw Normal View History

Reenable tail duplication of bb with just an unconditional jump, but don't remove blocks that have their address taken. llvm-svn: 133659
2011-06-23 06:31:57 +08:00
; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
; Test that we don't drop a block that has its address taken.
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. llvm-svn: 147743
2012-01-08 06:42:19 +08:00
; CHECK: Ltmp0: ## Block address taken
Reenable tail duplication of bb with just an unconditional jump, but don't remove blocks that have their address taken. llvm-svn: 133659
2011-06-23 06:31:57 +08:00
; CHECK: Ltmp1: ## Block address taken
@a = common global i32 0, align 4
@p = common global i8* null, align 8
define void @foo() noreturn nounwind uwtable ssp {
entry:
%tmp = load i32* @a, align 4
%foo = icmp eq i32 0, %tmp
br i1 %foo, label %sw.bb, label %sw.default
sw.bb: ; preds = %entry
store i8* blockaddress(@foo, %sw.bb1), i8** @p, align 8
br label %sw.bb1
sw.bb1: ; preds = %sw.default, %sw.bb, %entry
store i8* blockaddress(@foo, %sw.default), i8** @p, align 8
br label %sw.default
sw.default: ; preds = %sw.bb1, %entry
store i8* blockaddress(@foo, %sw.bb1), i8** @p, align 8
br label %sw.bb1
}