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LLVM backend for 6502
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ee8e48d4c9
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Hal Finkel ee8e48d4c9 [PowerPC] Handle VSX v2i64 SIGN_EXTEND_INREG 
sitofp from v2i32 to v2f64 ends up generating a SIGN_EXTEND_INREG v2i64 node
(and similarly for v2i16 and v2i8). Even though there are no sign-extension (or
algebraic shifts) for v2i64 types, we can handle v2i32 sign extensions by
converting two and from v2i64. The small trick necessary here is to shift the
i32 elements into the right lanes before the i32 -> f64 step. This is because
of the big Endian nature of the system, we need the i32 portion in the high
word of the i64 elements.

For v2i16 and v2i8 we can do the same, but we first use the default Altivec
shift-based expansion from v2i16 or v2i8 to v2i32 (by casting to v4i32) and
then apply the above procedure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205146 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-30 13:22:59 +00:00
autoconf ARM64: initial backend import 2014-03-29 10:18:08 +00:00
bindings
cmake ARM64: initial backend import 2014-03-29 10:18:08 +00:00
docs Exception handling docs: Clarify how the llvm.eh.* intrinsics are used 2014-03-28 17:08:57 +00:00
examples Fix warnings about an variable only used in asserts. 2014-03-06 06:35:46 +00:00
include [Allocator] Lift the slab size and size threshold into template 2014-03-30 12:07:07 +00:00
lib [PowerPC] Handle VSX v2i64 SIGN_EXTEND_INREG 2014-03-30 13:22:59 +00:00
projects Remove projects/sample. 2014-03-12 22:40:22 +00:00
test [PowerPC] Handle VSX v2i64 SIGN_EXTEND_INREG 2014-03-30 13:22:59 +00:00
tools Windows: canonicalise the default windows triple 2014-03-29 01:08:53 +00:00
unittests [Allocator] Lift the slab size and size threshold into template 2014-03-30 12:07:07 +00:00
utils tblgen: Twinify PrintFatalError. 2014-03-29 17:17:15 +00:00
.arcconfig
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.gitignore Remove projects/sample. 2014-03-12 22:40:22 +00:00
CMakeLists.txt ARM64: initial backend import 2014-03-29 10:18:08 +00:00
CODE_OWNERS.TXT Update my e-mail address in CODE_OWNERS.TXT 2014-03-13 18:04:41 +00:00
configure ARM64: initial backend import 2014-03-29 10:18:08 +00:00
CREDITS.TXT
LICENSE.TXT Remove projects/sample. 2014-03-12 22:40:22 +00:00
llvm.spec.in
LLVMBuild.txt
Makefile [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
Makefile.common
Makefile.config.in Add a --enable-clang-plugin-support option to configure. 2014-03-10 16:58:35 +00:00
Makefile.rules Use -std=gnu++11 on cygwin and mingw. 2014-03-12 20:01:15 +00:00
README.txt

README.txt 

Low Level Virtual Machine (LLVM)
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