[llvm] r185714 - ARM: Add a pack pattern for matching arithmetic shift right

[Arnold Schwaighofer]

Author: arnolds
Date: Fri Jul  5 13:57:49 2013
New Revision: 185714

URL: http://llvm.org/viewvc/llvm-project?rev=185714&view=rev
Log:
ARM: Add a pack pattern for matching arithmetic shift right

Modified:
    llvm/trunk/lib/Target/ARM/ARMInstrInfo.td
    llvm/trunk/test/CodeGen/ARM/pack.ll

Modified: llvm/trunk/lib/Target/ARM/ARMInstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrInfo.td?rev=185714&r1=185713&r2=185714&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrInfo.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrInfo.td Fri Jul  5 13:57:49 2013
@@ -4017,6 +4017,9 @@ def : ARMV6Pat<(or (and GPRnopc:$src1, 0
                    (srl GPRnopc:$src2, imm16:$sh)),
                (PKHTB GPRnopc:$src1, GPRnopc:$src2, imm16:$sh)>;
 def : ARMV6Pat<(or (and GPRnopc:$src1, 0xFFFF0000),
+                   (sra GPRnopc:$src2, imm16_31:$sh)),
+               (PKHTB GPRnopc:$src1, GPRnopc:$src2, imm16_31:$sh)>;
+def : ARMV6Pat<(or (and GPRnopc:$src1, 0xFFFF0000),
                    (and (srl GPRnopc:$src2, imm1_15:$sh), 0xFFFF)),
                (PKHTB GPRnopc:$src1, GPRnopc:$src2, imm1_15:$sh)>;
 

Modified: llvm/trunk/test/CodeGen/ARM/pack.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/pack.ll?rev=185714&r1=185713&r2=185714&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/ARM/pack.ll (original)
+++ llvm/trunk/test/CodeGen/ARM/pack.ll Fri Jul  5 13:57:49 2013
@@ -99,3 +99,13 @@ entry:
     %tmp3 = or i32 %tmp, %tmp2
     ret i32 %tmp3
 }
+
+; CHECK: test10:
+; CHECK: pkhtb r0, r0, r1, asr #17
+define i32 @test10(i32 %src1, i32 %src2) {
+entry:
+    %tmp = and i32 %src1, -65536
+    %tmp2 = ashr i32 %src2, 17
+    %tmp3 = or i32 %tmp, %tmp2
+    ret i32 %tmp3
+}