With the "wasm32-unknown-unknown-wasm" triple, this allows writing out
simple wasm object files, and is another step in a larger series toward
migrating from ELF to general wasm object support. Note that this code
and the binary format itself is still experimental.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296190 91177308-0d34-0410-b5e6-96231b3b80d8
Leftover from D22686; the passes can handle all the instructions
unconditionally; only isel needs to care whether to generate them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@277549 91177308-0d34-0410-b5e6-96231b3b80d8
r258781 optimized memcpy/memmove/memcpy so the intrinsic call can return its first argument, but missed the frame index case. Teach it to ignore that case so C code doesn't assert out in these cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258851 91177308-0d34-0410-b5e6-96231b3b80d8
These calls return their first argument, but because LLVM uses an intrinsic
with a void return type, they can't use the returned attribute. Generalize
the store results pass to optimize these calls too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258781 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Use the SP32 physical register as the base for FrameIndex
lowering. Update it and the __stack_pointer global var in the prolog and
epilog. Extend the mapping of virtual registers to wasm locals to
include the physical registers.
Rather than modify the target-independent PrologEpilogInserter (which
asserts that there are no virtual registers left) include a
slightly-modified copy for Wasm that does not have this assertion and
only clears the virtual registers if scavenging was needed (which of
course it isn't for wasm).
Differential Revision: http://reviews.llvm.org/D15344
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255392 91177308-0d34-0410-b5e6-96231b3b80d8
This patch introduces a codegen-only instruction currently named br_unless,
which makes it convenient to implement ReverseBranchCondition and re-enable
the MachineBlockPlacement pass. Then in a late pass, it lowers br_unless
back into br_if.
Differential Revision: http://reviews.llvm.org/D14995
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254826 91177308-0d34-0410-b5e6-96231b3b80d8
If virtual registers are created late, mappings to WebAssembly
registers need to be added explicitly. This patch adds a function
to do so and teaches WebAssemblyPeephole to use it. This fixes
an out-of-bounds access on the WARegs vector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254094 91177308-0d34-0410-b5e6-96231b3b80d8
