Merge pull request #124 from kateinoigakukun/yt/add-wasm-backend-validation-take2

Add validation check for WebAssembly compiler backend take 2

Author: kateinoigakukun

lit.cfg

@@ -148,8 +148,10 @@ if llvm_bin_dir is None:
     lit_config.fatal("'--param llvm-bin-dir=PATH' is required")
 filecheck_path = os.path.join(llvm_bin_dir, 'FileCheck')
 readelf_path = os.path.join(llvm_bin_dir, 'llvm-readelf')
+readobj_path = os.path.join(llvm_bin_dir, 'llvm-readobj')
 lit_config.note("testing using 'FileCheck': %r" % (filecheck_path,))
 lit_config.note("testing using 'readelf': %r" % (readelf_path,))
+lit_config.note("testing using 'readobj': %r" % (readobj_path,))
 
 
 # Use the default Swift src layout if swiftpm is not provided as a
@@ -241,6 +243,7 @@ config.substitutions.append( ('%{swift}', swift_path) )
 config.substitutions.append( ('%{swiftc}', swiftc_path) )
 config.substitutions.append( ('%{FileCheck}', filecheck_path) )
 config.substitutions.append( ('%{readelf}', readelf_path) )
+config.substitutions.append( ('%{readobj}', readobj_path) )
 config.substitutions.append( ('%{sourcekit-lsp}', sourcekit_lsp_path) )
 config.substitutions.append( ('%{docc}', docc_path) )
 

test-cross-compile/main.swift

@@ -0,0 +1 @@
+func foo() {}

test-cross-compile/test-compile-wasm.test

@@ -0,0 +1,7 @@
+RUN: rm -rf %t
+RUN: mkdir -p %t
+RUN: %{swiftc} -target wasm32-unknown-wasi -parse-stdlib -c %S/main.swift -o %t/main.o
+RUN: %{readobj} %t/main.o | %{FileCheck} %s
+
+CHECK: Format: WASM
+CHECK: Arch: wasm32