1Pull in r201994 from upstream llvm trunk (by Benjamin Kramer):
2
3  SPARC: Implement TRAP lowering. Matches what GCC emits.
4
5Introduced here: http://svnweb.freebsd.org/changeset/base/262415
6
7Index: lib/Target/Sparc/SparcInstrInfo.td
8===================================================================
9--- lib/Target/Sparc/SparcInstrInfo.td
10+++ lib/Target/Sparc/SparcInstrInfo.td
11@@ -312,6 +312,9 @@ let hasSideEffects = 1, mayStore = 1 in {
12                    [(flushw)]>;
13 }
14 
15+let isBarrier = 1, isTerminator = 1, rd = 0b1000, rs1 = 0, simm13 = 5 in
16+  def TA5 : F3_2<0b10, 0b111010, (outs), (ins), "ta 5", [(trap)]>;
17+
18 let rd = 0 in
19   def UNIMP : F2_1<0b000, (outs), (ins i32imm:$val),
20                   "unimp $val", []>;
21Index: lib/Target/Sparc/SparcISelLowering.cpp
22===================================================================
23--- lib/Target/Sparc/SparcISelLowering.cpp
24+++ lib/Target/Sparc/SparcISelLowering.cpp
25@@ -1565,6 +1565,8 @@ SparcTargetLowering::SparcTargetLowering(TargetMac
26   // VAARG needs to be lowered to not do unaligned accesses for doubles.
27   setOperationAction(ISD::VAARG             , MVT::Other, Custom);
28 
29+  setOperationAction(ISD::TRAP              , MVT::Other, Legal);
30+
31   // Use the default implementation.
32   setOperationAction(ISD::VACOPY            , MVT::Other, Expand);
33   setOperationAction(ISD::VAEND             , MVT::Other, Expand);
34Index: test/CodeGen/SPARC/trap.ll
35===================================================================
36--- test/CodeGen/SPARC/trap.ll
37+++ test/CodeGen/SPARC/trap.ll
38@@ -0,0 +1,11 @@
39+; RUN: llc -mtriple=sparc-linux-gnu < %s -show-mc-encoding | FileCheck %s
40+
41+define void @test1() {
42+  tail call void @llvm.trap()
43+  unreachable
44+
45+; CHECK-LABEL: test1:
46+; CHECK: ta 5 ! encoding: [0x91,0xd0,0x20,0x05]
47+}
48+
49+declare void @llvm.trap()
50