[all-commits] [llvm/llvm-project] 637bb0: [WebAssembly][FastISel] Call materializeLoadStoreO...

[hanbeom via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 637bb0e37747001eaac08bca4312177f57735f5e
      https://github.com/llvm/llvm-project/commit/637bb0e37747001eaac08bca4312177f57735f5e
  Author: hanbeom <kese111 at gmail.com>
  Date:   2026-03-04 (Wed, 04 Mar 2026)

  Changed paths:
    M llvm/lib/Target/WebAssembly/WebAssemblyFastISel.cpp
    M llvm/test/CodeGen/WebAssembly/load-ext.ll

  Log Message:
  -----------
  [WebAssembly][FastISel] Call materializeLoadStoreOperands in load fold (#184203)

The `tryToFoldLoadIntoMI` function omitted materializing base registers
for addresses before folding sign-extend instructions into loads. This
left `$noreg` as the base register, crashing subsequent passes.

WebAssembly memory instructions structurally require a valid base
register. Calling the existing `materializeLoadStoreOperands` function
ensures that a `CONST 0` virtual register is generated when addressing
global variables directly without a pre-existing base register.

(before) %1:i32 = LOAD8_S_I32_A32 0, @ch, $noreg ... -> CRASH (after)
%3:i32 = CONST_I32 0
         %1:i32 = LOAD8_S_I32_A32 0, @ch, %3:i32 ... -> Folded safely



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