x64: Add native lowering for scalar fma (#4539)

Use `vfmadd213{ss,sd}` for these lowerings.
2022-08-11 23:48:16 +01:00
parent 755cd4311e
commit 3ea1813173
10 changed files with 124 additions and 6 deletions
--- a/cranelift/codegen/src/isa/x64/inst/emit_tests.rs
+++ b/cranelift/codegen/src/isa/x64/inst/emit_tests.rs
@@ -3531,6 +3531,18 @@ fn test_x64_emit() {
    // ========================================================
    // XMM FMA

+    insns.push((
+        Inst::xmm_rm_r_vex(AvxOpcode::Vfmadd213ss, RegMem::reg(xmm2), xmm1, w_xmm0),
+        "C4E271A9C2",
+        "vfmadd213ss %xmm0, %xmm1, %xmm2, %xmm0",
+    ));
+
+    insns.push((
+        Inst::xmm_rm_r_vex(AvxOpcode::Vfmadd213sd, RegMem::reg(xmm5), xmm4, w_xmm3),
+        "C4E2D9A9DD",
+        "vfmadd213sd %xmm3, %xmm4, %xmm5, %xmm3",
+    ));
+
    insns.push((
        Inst::xmm_rm_r_vex(AvxOpcode::Vfmadd213ps, RegMem::reg(xmm2), xmm1, w_xmm0),
        "C4E271A8C2",