[wasm-simd][ia32] Fix DCHECK in f64x2.extract_lane

f64x2.extract_lane can only extract lane 0 or 1. Fix the DCHECK to check
for the appropriate lane values.

Change-Id: I62d5e34ce01e0fa66609fb1fed7979bf2782bb74
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2589057Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71787}

src/compiler/backend/ia32/code-generator-ia32.cc

@@ -1999,7 +1999,7 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
       XMMRegister dst = i.OutputDoubleRegister();
       int8_t lane = i.InputInt8(1);
       if (lane != 0) {
-        DCHECK_LT(lane, 4);
+        DCHECK_EQ(lane, 1);
         __ shufpd(dst, dst, lane);
       }
       break;
@@ -2012,7 +2012,7 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
       if (lane == 0) {
         if (dst != src) __ vmovapd(dst, src);
       } else {
-        DCHECK_LT(lane, 4);
+        DCHECK_EQ(lane, 1);
         __ vshufpd(dst, src, src, lane);
       }
       break;