Revert "[ARM] Constant Materialize: imms with specific value can be encoded into...

This reverts commit r277610 / d619aa8878c3dafcc0d29a46517f63ff3209fdd4.

This make subtarget-no-movt.ll fail in
http://lab.llvm.org:8080/green/job/clang-stage1-cmake-RA-incremental_check/26892,

llvm-svn: 277654

diff --git a/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp b/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
index 01b4e19..d11de55 100644 (file)
--- a/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -476,9 +476,7 @@ bool ARMDAGToDAGISel::isShifterOpProfitable(const SDValue &Shift,
 unsigned ARMDAGToDAGISel::ConstantMaterializationCost(unsigned Val) const {
   if (Subtarget->isThumb()) {
     if (Val <= 255) return 1;                               // MOV
-    if (Subtarget->hasV6T2Ops() &&
-        (Val <= 0xffff || ARM_AM::getT2SOImmValSplatVal(Val) != -1))
-      return 1; // MOVW
+    if (Subtarget->hasV6T2Ops() && Val <= 0xffff) return 1; // MOVW
     if (Val <= 510) return 2;                               // MOV + ADDi8
     if (~Val <= 255) return 2;                              // MOV + MVN
     if (ARM_AM::isThumbImmShiftedVal(Val)) return 2;        // MOV + LSL

diff --git a/llvm/test/CodeGen/ARM/subtarget-no-movt.ll b/llvm/test/CodeGen/ARM/subtarget-no-movt.ll
index aad3c0a..cb61bde 100644 (file)
--- a/llvm/test/CodeGen/ARM/subtarget-no-movt.ll
+++ b/llvm/test/CodeGen/ARM/subtarget-no-movt.ll
@@ -42,21 +42,4 @@ define i32 @foo1(i32 %a) {
   ret i32 %1
 }
 
-; NO-OPTION-LABEL: {{_?}}foo2
-; NO-OPTION: mov.w     r0, #-536813568
-; NO-OPTION-LABEL-NOT: .long
-
-; USE-MOVT-LABEL: {{_?}}foo2
-; USE-MOVT: mov.w      r0, #-536813568
-; USE-MOVT-NOT: .long
-
-; NO-USE-MOVT-LABEL: {{_?}}foo2
-; NO-USE-MOVT: mov.w   r0, #-536813568
-; NO-USE-MOVT-NOT: .long
-define i32 @foo2() {
-  %1 = load i32, i32* inttoptr (i32 -536813568 to i32*) ; load from 0xe000e000
-  ret i32 %1
-}
-
-
 attributes #0 = { "target-features"="+no-movt" }