diff options
Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp index a333fb3055e..dcc393db6ea 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp @@ -176,7 +176,8 @@ void WebAssemblyPassConfig::addPostRegAlloc() { // virtual registers. Consider removing their restrictions and re-enabling // them. // - // Fails with: Regalloc must assign all vregs. + // We use our own PrologEpilogInserter which is very slightly modified to + // tolerate virtual registers. disablePass(&PrologEpilogCodeInserterID); // Fails with: should be run after register allocation. disablePass(&MachineCopyPropagationID); @@ -185,6 +186,11 @@ void WebAssemblyPassConfig::addPostRegAlloc() { addPass(createWebAssemblyRegColoring()); TargetPassConfig::addPostRegAlloc(); + + // Run WebAssembly's version of the PrologEpilogInserter. Target-independent + // PEI runs after PostRegAlloc and after ShrinkWrap. Putting it here will run + // PEI before ShrinkWrap but otherwise in the same position in the order. + addPass(createWebAssemblyPEI()); } void WebAssemblyPassConfig::addPreEmitPass() { |
