[AArch64][GlobalISel] Legalize 128 bit divisions to libcalls.

Now that we have the infrastructure to support s128 types as parameters
we can expand these to libcalls.

Differential Revision: https://reviews.llvm.org/D66185

llvm-svn: 370823

1 files changed, 22 insertions, 4 deletions

diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index 1fc10a2d11c..abbab01303b 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -240,11 +240,29 @@ void LegalizerHelper::insertParts(Register DstReg,
 static RTLIB::Libcall getRTLibDesc(unsigned Opcode, unsigned Size) {
   switch (Opcode) {
   case TargetOpcode::G_SDIV:
-    assert((Size == 32 || Size == 64) && "Unsupported size");
-    return Size == 64 ? RTLIB::SDIV_I64 : RTLIB::SDIV_I32;
+    assert((Size == 32 || Size == 64 || Size == 128) && "Unsupported size");
+    switch (Size) {
+    case 32:
+      return RTLIB::SDIV_I32;
+    case 64:
+      return RTLIB::SDIV_I64;
+    case 128:
+      return RTLIB::SDIV_I128;
+    default:
+      llvm_unreachable("unexpected size");
+    }
   case TargetOpcode::G_UDIV:
-    assert((Size == 32 || Size == 64) && "Unsupported size");
-    return Size == 64 ? RTLIB::UDIV_I64 : RTLIB::UDIV_I32;
+    assert((Size == 32 || Size == 64 || Size == 128) && "Unsupported size");
+    switch (Size) {
+    case 32:
+      return RTLIB::UDIV_I32;
+    case 64:
+      return RTLIB::UDIV_I64;
+    case 128:
+      return RTLIB::UDIV_I128;
+    default:
+      llvm_unreachable("unexpected size");
+    }
   case TargetOpcode::G_SREM:
     assert((Size == 32 || Size == 64) && "Unsupported size");
     return Size == 64 ? RTLIB::SREM_I64 : RTLIB::SREM_I32;