mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-24 21:42:54 +02:00
def314d5bf
o Before this patch, BPF backend will expand UNDEF node
to i64 constant 0.
o For second pass of dag combiner, legalizer will run through
each to-be-processed dag node.
o If any new SDNode is generated and has an undef operand,
dag combiner will put undef node, newly-generated constant-0 node,
and any node which uses these nodes in the working list.
o During this process, it is possible undef operand is
generated again, and this will form an infinite loop
for dag combiner pass2.
o This patch allows UNDEF to be a legal type.
Signed-off-by: Yonghong Song <yhs@plumgrid.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
llvm-svn: 249718
|
||
|---|---|---|
| .. | ||
| AArch64 | ||
| AMDGPU | ||
| ARM | ||
| BPF | ||
| CPP | ||
| Generic | ||
| Hexagon | ||
| Inputs | ||
| Mips | ||
| MIR | ||
| MSP430 | ||
| NVPTX | ||
| PowerPC | ||
| SPARC | ||
| SystemZ | ||
| Thumb | ||
| Thumb2 | ||
| WebAssembly | ||
| WinEH | ||
| X86 | ||
| XCore | ||