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; RUN: llc < %s -O1 --debug-pass=Structure 2>&1 | FileCheck %s --check-prefix=O1 ; RUN: llc < %s -O2 --debug-pass=Structure 2>&1 | FileCheck %s --check-prefix=O2 ; Test if RegisterCoalesce pass is disabled in -O1. ; O1-NOT: Register Coalescer ; O2: Register Coalescer target triple = "wasm32-unknown-unknown" define void @test() { ret void }