[wasm] fix Simd ExtractLane to take immediate instead of param

src/wasm/wasm-macro-gen.h

Index: src/wasm/wasm-macro-gen.h
diff --git a/src/wasm/wasm-macro-gen.h b/src/wasm/wasm-macro-gen.h
index 9a87f0ff95f5844c90bbec6a85aab7b8d242bb1a..da431c701e9a1e7f90b9576d96196ad4adde7389 100644
--- a/src/wasm/wasm-macro-gen.h
+++ b/src/wasm/wasm-macro-gen.h
@@ -590,7 +590,7 @@ class LocalDeclEncoder {
 //------------------------------------------------------------------------------
 #define WASM_SIMD_I32x4_SPLAT(x) x, kSimdPrefix, kExprI32x4Splat & 0xff
 #define WASM_SIMD_I32x4_EXTRACT_LANE(x, y) \

[titzer, 2016/09/01 08:32:43]

If y is the immediate, then generally it should come first in the macro. And
maybe "lane" is a better name.

[aseemgarg, 2016/09/02 22:40:13]

Done.

-  x, y, kSimdPrefix, kExprI32x4ExtractLane & 0xff
+  x, kSimdPrefix, kExprI32x4ExtractLane & 0xff, static_cast<byte>(y)
 
 #define SIG_ENTRY_v_v kWasmFunctionTypeForm, 0, 0
 #define SIZEOF_SIG_ENTRY_v_v 3