[WebAssembly] Remove ELF file support.
This support was partial and temporary. Now that we have
wasm object file support its no longer needed.
Differential Revision: https://reviews.llvm.org/D48744
llvm-svn: 337222
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp
index dc51d7a..9f5d5bd 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyRegStackify.cpp
@@ -749,14 +749,6 @@
MachineDominatorTree &MDT = getAnalysis<MachineDominatorTree>();
LiveIntervals &LIS = getAnalysis<LiveIntervals>();
- // Disable the TEE optimization if we aren't doing direct wasm object
- // emission, because lowering TEE to TEE_LOCAL is done in the ExplicitLocals
- // pass, which is also disabled.
- bool UseTee = true;
- if (MF.getSubtarget<WebAssemblySubtarget>()
- .getTargetTriple().isOSBinFormatELF())
- UseTee = false;
-
// Walk the instructions from the bottom up. Currently we don't look past
// block boundaries, and the blocks aren't ordered so the block visitation
// order isn't significant, but we may want to change this in the future.
@@ -822,7 +814,7 @@
Insert =
RematerializeCheapDef(Reg, Op, *Def, MBB, Insert->getIterator(),
LIS, MFI, MRI, TII, TRI);
- } else if (UseTee && CanMove &&
+ } else if (CanMove &&
OneUseDominatesOtherUses(Reg, Op, MBB, MRI, MDT, LIS, MFI)) {
Insert = MoveAndTeeForMultiUse(Reg, Op, Def, MBB, Insert, LIS, MFI,
MRI, TII);