1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/simd/splat-x64-ion-codegen.js b/js/src/jit-test/tests/wasm/simd/splat-x64-ion-codegen.js
new file mode 100644
index 0000000000..ce1d7adb12
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/simd/splat-x64-ion-codegen.js
@@ -0,0 +1,29 @@
+// |jit-test| skip-if: !wasmSimdEnabled() || !hasDisassembler() || wasmCompileMode() != "ion" || !getBuildConfiguration().x64 || getBuildConfiguration().simulator || isAvxPresent(); include:codegen-x64-test.js
+
+// Test that there are no extraneous moves or other instructions for splat and
+// other splat-like operations that can reuse its input for its output and/or
+// has a specializable code path.  See README-codegen.md for general information
+// about this type of test case.
+
+codegenTestX64_PTYPE_v128(
+    [['f32x4.splat', 'f32', `0f c6 c0 00               shufps \\$0x00, %xmm0, %xmm0`],
+     ['f64x2.splat', 'f64', `f2 0f 12 c0               movddup %xmm0, %xmm0`]] , {log:true});
+
+// Skip these on Win64 because the ABI differs and there's a different parameter
+// register, this changes not just the name slightly but the binary encoding in
+// larger ways.
+
+if (!getBuildConfiguration().windows) {
+    codegenTestX64_PTYPE_v128(
+        [['v128.load32_splat', 'i32', `
+f3 41 0f 10 04 3f         movssl \\(%r15,%rdi,1\\), %xmm0
+0f c6 c0 00               shufps \\$0x00, %xmm0, %xmm0`],
+         ['v128.load64_splat', 'i32', `f2 41 0f 12 04 3f         movddupq \\(%r15,%rdi,1\\), %xmm0`],
+         ['v128.load8x8_s',    'i32', `66 41 0f 38 20 04 3f      pmovsxbwq \\(%r15,%rdi,1\\), %xmm0`],
+         ['v128.load8x8_u',    'i32', `66 41 0f 38 30 04 3f      pmovzxbwq \\(%r15,%rdi,1\\), %xmm0`],
+         ['v128.load16x4_s',   'i32', `66 41 0f 38 23 04 3f      pmovsxwdq \\(%r15,%rdi,1\\), %xmm0`],
+         ['v128.load16x4_u',   'i32', `66 41 0f 38 33 04 3f      pmovzxwdq \\(%r15,%rdi,1\\), %xmm0`],
+         ['v128.load32x2_s',   'i32', `66 41 0f 38 25 04 3f      pmovsxdqq \\(%r15,%rdi,1\\), %xmm0`],
+         ['v128.load32x2_u',   'i32', `66 41 0f 38 35 04 3f      pmovzxdqq \\(%r15,%rdi,1\\), %xmm0`]],
+        {memory:1});
+}