[WebAssembly] Use named operands to identify loads and stores

Summary:
Uses the named operands tablegen feature to look up the indices of
offset, address, and p2align operands for all load and store
instructions. This replaces brittle, incorrect logic for identifying
loads and store when eliminating frame indices, which previously
crashed on bulk-memory ops. It also cleans up the SetP2Alignment pass.

Reviewers: aheejin, dschuff

Subscribers: sbc100, jgravelle-google, hiraditya, sunfish, jfb, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59007

llvm-svn: 355770

1 files changed, 0 insertions, 8 deletions

diff --git a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.h b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.h
index faa8c69baa4..5db72910315 100644
--- a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.h
+++ b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCTargetDesc.h
@@ -331,14 +331,6 @@ inline unsigned GetDefaultP2Align(unsigned Opcode) {
   }
 }
 
-/// The operand number of the load or store address in load/store instructions.
-static const unsigned LoadAddressOperandNo = 3;
-static const unsigned StoreAddressOperandNo = 2;
-
-/// The operand number of the load or store p2align in load/store instructions.
-static const unsigned LoadP2AlignOperandNo = 1;
-static const unsigned StoreP2AlignOperandNo = 0;
-
 /// This is used to indicate block signatures.
 enum class ExprType : unsigned {
   Void = 0x40,