[llvm] r329743 - [AArch64] Fix isel failure when BUILD_PAIR nodes are left over.

[Amara Emerson via llvm-commits]

Author: aemerson
Date: Tue Apr 10 12:01:58 2018
New Revision: 329743

URL: http://llvm.org/viewvc/llvm-project?rev=329743&view=rev
Log:
[AArch64] Fix isel failure when BUILD_PAIR nodes are left over.

rdar://39175175

Added:
    llvm/trunk/test/CodeGen/AArch64/build-pair-isel.ll
Modified:
    llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp

Modified: llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp?rev=329743&r1=329742&r2=329743&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp Tue Apr 10 12:01:58 2018
@@ -198,6 +198,8 @@ AArch64TargetLowering::AArch64TargetLowe
   setOperationAction(ISD::FREM, MVT::f64, Expand);
   setOperationAction(ISD::FREM, MVT::f80, Expand);
 
+  setOperationAction(ISD::BUILD_PAIR, MVT::i64, Expand);
+
   // Custom lowering hooks are needed for XOR
   // to fold it into CSINC/CSINV.
   setOperationAction(ISD::XOR, MVT::i32, Custom);

Added: llvm/trunk/test/CodeGen/AArch64/build-pair-isel.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/build-pair-isel.ll?rev=329743&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/build-pair-isel.ll (added)
+++ llvm/trunk/test/CodeGen/AArch64/build-pair-isel.ll Tue Apr 10 12:01:58 2018
@@ -0,0 +1,13 @@
+; RUN: llc -mtriple=aarch64 -o - -O0 %s | FileCheck %s
+target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
+target triple = "arm64-apple-ios5.0.0"
+
+; This test checks we don't fail isel due to unhandled build_pair nodes.
+; CHECK: bfi
+define void @compare_and_swap128() {
+  %1 = call i128 asm sideeffect "nop", "=r,~{memory}"()
+  store i128 %1, i128* undef, align 16
+  ret void
+}
+
+