llvm-project/llvm/lib/Target/ARM/AsmPrinter
Bob Wilson 13ce07fa92 Change ARM VFP VLDM/VSTM instructions to use addressing mode #4, just like
all the other LDM/STM instructions.  This fixes asm printer crashes when
compiling with -O0.  I've changed one of the NEON tests (vst3.ll) to run
with -O0 to check this in the future.

Prior to this change VLDM/VSTM used addressing mode #5, but not really.
The offset field was used to hold a count of the number of registers being
loaded or stored, and the AM5 opcode field was expanded to specify the IA
or DB mode, instead of the standard ADD/SUB specifier.  Much of the backend
was not aware of these special cases.  The crashes occured when rewriting
a frameindex caused the AM5 offset field to be changed so that it did not
have a valid submode.  I don't know exactly what changed to expose this now.
Maybe we've never done much with -O0 and NEON.  Regardless, there's no longer
any reason to keep a count of the VLDM/VSTM registers, so we can use
addressing mode #4 and clean things up in a lot of places.

llvm-svn: 112322
2010-08-27 23:18:17 +00:00
..
ARMInstPrinter.cpp Change ARM VFP VLDM/VSTM instructions to use addressing mode #4, just like 2010-08-27 23:18:17 +00:00
ARMInstPrinter.h Rename sat_shift operand to shift_imm, in preparation for using it for other 2010-08-16 18:27:34 +00:00
CMakeLists.txt Update CMake files. 2010-07-20 00:08:13 +00:00
Makefile Fix LLVM build when the user specifies CPPFLAGS on the make command line. 2010-03-12 21:42:14 +00:00