QFMA/QFMS instructions (#2328)

Renames the SIMDBitselect class to SIMDTernary and adds the new
{f32x4,f64x2}.qfm{a,s} ternary instructions. Because the SIMDBitselect
class is no more, this is a backwards-incompatible change to the C
interface. The new instructions are not yet used in the fuzzer because
they are not yet implemented in V8.

The corresponding LLVM commit is https://reviews.llvm.org/rL370556.

1 files changed, 9 insertions, 6 deletions

diff --git a/src/wasm-builder.h b/src/wasm-builder.h
index 3e61b1a36..c2f1e41b6 100644
--- a/src/wasm-builder.h
+++ b/src/wasm-builder.h
@@ -400,12 +400,15 @@ public:
     ret->finalize();
     return ret;
   }
-  SIMDBitselect*
-  makeSIMDBitselect(Expression* left, Expression* right, Expression* cond) {
-    auto* ret = allocator.alloc<SIMDBitselect>();
-    ret->left = left;
-    ret->right = right;
-    ret->cond = cond;
+  SIMDTernary* makeSIMDTernary(SIMDTernaryOp op,
+                               Expression* a,
+                               Expression* b,
+                               Expression* c) {
+    auto* ret = allocator.alloc<SIMDTernary>();
+    ret->op = op;
+    ret->a = a;
+    ret->b = b;
+    ret->c = c;
     ret->finalize();
     return ret;
   }