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Jim Grosbach 94dfd6fc4f Simplify ARM callee-saved register handling by removing the distinction
between the high and low registers for prologue/epilogue code. This was
a Darwin-only thing that wasn't providing a realistic benefit anymore.
Combining the save areas simplifies the compiler code and results in better
ARM/Thumb2 codegen.

For example, previously we would generate code like:
        push    {r4, r5, r6, r7, lr}
        add     r7, sp, #12
        stmdb   sp!, {r8, r10, r11}
With this change, we combine the register saves and generate:
        push    {r4, r5, r6, r7, r8, r10, r11, lr}
        add     r7, sp, #12

rdar://8445635

llvm-svn: 114340
2010-09-20 19:32:20 +00:00
clang Fix CMake clangIndex library dependencies, from Logan Chien 2010-09-20 18:32:29 +00:00
compiler-rt Adds an extra explicit cast to fix Bug 7931 and removes codepaths that were never used 2010-08-17 19:13:45 +00:00
debuginfo-tests test case for r113843. 2010-09-14 20:29:59 +00:00
libcxx Tweak clang support for char16_t/char32_t 2010-09-16 23:27:26 +00:00
lldb More modularizations. 2010-09-20 18:07:50 +00:00
llvm Simplify ARM callee-saved register handling by removing the distinction 2010-09-20 19:32:20 +00:00