Evan Cheng ab5c703fdb Fix epilogue codegen to avoid leaving the stack pointer in an invalid ... state. Previously Thumb2 would restore sp from fp like this: mov sp, r7 sub, sp, #4 If an interrupt is taken after the 'mov' but before the 'sub', callee-saved registers might be clobbered by the interrupt handler. Instead, try restoring directly from sp: add sp, #4 Or, if necessary (with VLA, etc.) use a scratch register to compute sp and then restore it: sub.w r4, r7, #8 mov sp, r7 rdar://8465407 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119977 91177308-0d34-0410-b5e6-96231b3b80d8		2010-11-22 18:12:04 +00:00
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Alpha
ARM	Fix epilogue codegen to avoid leaving the stack pointer in an invalid	2010-11-22 18:12:04 +00:00
Blackfin
CBackend
CellSPU	Fix a bug with extractelement on SPU.	2010-11-22 16:28:26 +00:00
CPP
Generic	Removing the useless test that I added recently. It was meant as an example, but not complicated enough to merit another test.	2010-11-20 07:26:51 +00:00
MBlaze	Implement branch analysis in the MBlaze backend.	2010-11-21 21:53:36 +00:00
Mips
MSP430
PowerPC
PTX	Add simple arithmetics and %type directive for PTX	2010-11-17 08:08:49 +00:00
SPARC
SystemZ
Thumb	Fix epilogue codegen to avoid leaving the stack pointer in an invalid	2010-11-22 18:12:04 +00:00
Thumb2	Fix epilogue codegen to avoid leaving the stack pointer in an invalid	2010-11-22 18:12:04 +00:00
X86	Implement the "if (X == 6 || X == 4)" -> "if ((X|2) == 6)" optimization.	2010-11-22 09:45:38 +00:00
XCore
thumb2-mul.ll