Greg Fitzgerald 148c7f286c Fix inline assembly that switches between ARM and Thumb modes ... This patch restores the ARM mode if the user's inline assembly does not. In the object streamer, it ensures that instructions following the inline assembly are encoded correctly and that correct mapping symbols are emitted. For the asm streamer, it emits a .arm or .thumb directive. This patch does not ensure that the inline assembly contains the ADR instruction to switch modes at runtime. The problem we need to solve is code like this: int foo(int a, int b) { int r = a + b; asm volatile( ".align 2 \n" ".arm \n" "add r0,r0,r0 \n" : : "r"(r)); return r+1; } If we compile this function in thumb mode then the inline assembly will switch to arm mode. We need to make sure that we switch back to thumb mode after emitting the inline assembly or we will incorrectly encode the instructions that follow (i.e. the assembly instructions for return r+1). Based on patch by David Peixotto Change-Id: Ib57f6d2d78a22afad5de8693fba6230ff56ba48b git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199818 91177308-0d34-0410-b5e6-96231b3b80d8		2014-01-22 18:32:35 +00:00
..
ADT	Add operator!= for FoldingSetNodeID and FoldingSetNodeIDRef. Implementation in	2014-01-21 01:29:37 +00:00
Analysis	Fix PR18449: SCEV needs more precise max BECount for multi-exit loop.	2014-01-15 06:42:11 +00:00
AsmParser
Bitcode	Make parseBitcodeFile return an ErrorOr<Module *>.	2014-01-15 01:08:23 +00:00
CodeGen	Adding new LTO APIs to parse metadata nodes and extract linker options and	2014-01-21 18:31:27 +00:00
Config	Remove the test for endianness in configure.ac and regenerate.	2014-01-09 01:09:57 +00:00
DebugInfo	llvm-dwarfdump: type unit dwo support	2014-01-09 05:08:24 +00:00
ExecutionEngine
IR	MIPS: mark intrinsics IntrNoMem so all patterns using them are consistent.	2014-01-21 10:41:16 +00:00
IRReader
LTO	Adding new LTO APIs to parse metadata nodes and extract linker options and	2014-01-21 18:31:27 +00:00
MC	Fix inline assembly that switches between ARM and Thumb modes	2014-01-22 18:32:35 +00:00
Object	Pass the computed magic to createBinary and createObjectFile if available.	2014-01-22 16:04:52 +00:00
Option
Support	Add unused result attr to the casting templates	2014-01-22 07:28:49 +00:00
TableGen
Target	Adding new LTO APIs to parse metadata nodes and extract linker options and	2014-01-21 18:31:27 +00:00
Transforms	[asan] Remove -fsanitize-address-zero-base-shadow command line	2014-01-16 10:19:12 +00:00
AutoUpgrade.h
CMakeLists.txt
DebugInfo.h
DIBuilder.h	typo	2014-01-18 02:12:10 +00:00
GVMaterializer.h
InitializePasses.h	[PM] Wire up the Verifier for the new pass manager and connect it to the	2014-01-20 11:34:08 +00:00
InstVisitor.h
LinkAllIR.h	[cleanup] Move the Dominators.h and Verifier.h headers into the IR	2014-01-13 09:26:24 +00:00
LinkAllPasses.h	[PM] Simplify the interface exposed for IR printing passes.	2014-01-12 11:30:46 +00:00
Linker.h
Pass.h
PassAnalysisSupport.h
PassManager.h
PassRegistry.h
PassSupport.h	[opt][PassInfo] Allow opt to run passes that need target machine.	2014-01-16 21:44:34 +00:00