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, 7 insertions, 5 deletions

diff --git a/src/wasm/wasm-s-parser.cpp b/src/wasm/wasm-s-parser.cpp
index 3a1e0db09..322c36c45 100644
--- a/src/wasm/wasm-s-parser.cpp
+++ b/src/wasm/wasm-s-parser.cpp
@@ -1473,11 +1473,13 @@ Expression* SExpressionWasmBuilder::makeSIMDShuffle(Element& s) {
   return ret;
 }
 
-Expression* SExpressionWasmBuilder::makeSIMDBitselect(Element& s) {
-  auto ret = allocator.alloc<SIMDBitselect>();
-  ret->left = parseExpression(s[1]);
-  ret->right = parseExpression(s[2]);
-  ret->cond = parseExpression(s[3]);
+Expression* SExpressionWasmBuilder::makeSIMDTernary(Element& s,
+                                                    SIMDTernaryOp op) {
+  auto ret = allocator.alloc<SIMDTernary>();
+  ret->op = op;
+  ret->a = parseExpression(s[1]);
+  ret->b = parseExpression(s[2]);
+  ret->c = parseExpression(s[3]);
   ret->finalize();
   return ret;
 }