Bill Wendling 072ebe59e2 The basic problem is that some mainstream programs cannot deal with the way ... clang optimizes tail calls, as in this example: int foo(void); int bar(void) { return foo(); } where the call is transformed to: calll .L0$pb .L0$pb: popl %eax .Ltmp0: addl $_GLOBAL_OFFSET_TABLE_+(.Ltmp0-.L0$pb), %eax movl foo@GOT(%eax), %eax popl %ebp jmpl *%eax # TAILCALL However, the GOT references must all be resolved at dlopen() time, and so this approach cannot be used with lazy dynamic linking (e.g. using RTLD_LAZY), which usually populates the PLT with stubs that perform the actual resolving. This patch changes X86TargetLowering::LowerCall() to skip tail call optimization, if the called function is a global or external symbol. Patch by Dimitry Andric! PR15086 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195318 91177308-0d34-0410-b5e6-96231b3b80d8		2013-11-21 07:04:30 +00:00
..
Analysis	The 'optnone' attribute means don't inline anything into this function	2013-11-18 21:44:03 +00:00
AsmParser	Make it explicit that nulls are not allowed in names.	2013-11-19 21:12:39 +00:00
Bitcode	Fix spacing, forward declare order.	2013-11-18 02:51:33 +00:00
CodeGen	Teach ISel not to optimize 'optnone' functions.	2013-11-21 06:33:32 +00:00
DebugInfo
ExecutionEngine	[mips] Resolve relocation for the stubs in MCJIT when load address is known	2013-11-19 21:56:00 +00:00
IR	llvm-cov: Formatting change.	2013-11-21 04:12:10 +00:00
IRReader
Linker
LTO	Use array_pod_sort instead of std::sort	2013-11-16 16:15:56 +00:00
MC	Support multiple COFF sections with the same name but different COMDAT.	2013-11-19 19:52:52 +00:00
Object	Path: Recognize COFF import library file magic.	2013-11-15 21:22:02 +00:00
Option
Support	revert r194655	2013-11-21 00:20:10 +00:00
TableGen
Target	The basic problem is that some mainstream programs cannot deal with the way	2013-11-21 07:04:30 +00:00
Transforms	llvm-cov: Don't assume FileChecksum was generated.	2013-11-21 04:53:39 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile