[WebAssembly] Replace all calls with generalized multivalue calls

Summary:
Extends the multivalue call infrastructure to tail calls, removes all
legacy calls specialized for particular result types, and removes the
CallIndirectFixup pass, since all indirect call arguments are now
fixed up directly in the post-insertion hook.

In order to keep supporting pretty-printed defs and uses in test
expectations, MCInstLower now inserts an immediate containing the
number of defs for each call and call_indirect. The InstPrinter is
updated to query this immediate if it is present and determine which
MCOperands are defs and uses accordingly.

Depends on D72902.

Reviewers: aheejin

Subscribers: dschuff, mgorny, sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D74192

1 files changed, 0 insertions, 6 deletions

diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
index 07b00b6..35b76c6 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
@@ -76,7 +76,6 @@ extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeWebAssemblyTarget() {
   initializeWebAssemblyLowerBrUnlessPass(PR);
   initializeWebAssemblyRegNumberingPass(PR);
   initializeWebAssemblyPeepholePass(PR);
-  initializeWebAssemblyCallIndirectFixupPass(PR);
 }
 
 //===----------------------------------------------------------------------===//
@@ -423,11 +422,6 @@ void WebAssemblyPassConfig::addPostRegAlloc() {
 void WebAssemblyPassConfig::addPreEmitPass() {
   TargetPassConfig::addPreEmitPass();
 
-  // Rewrite pseudo call_indirect instructions as real instructions.
-  // This needs to run before register stackification, because we change the
-  // order of the arguments.
-  addPass(createWebAssemblyCallIndirectFixup());
-
   // Eliminate multiple-entry loops.
   addPass(createWebAssemblyFixIrreducibleControlFlow());