Add builtins for ssat/usat, similar to RealView's __ssat and __usat intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109813 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/IntrinsicsARM.td b/include/llvm/IntrinsicsARM.td
index 65f8361..7e909b7 100644 (file)
--- a/include/llvm/IntrinsicsARM.td
+++ b/include/llvm/IntrinsicsARM.td
@@ -29,6 +29,10 @@ let TargetPrefix = "arm" in {  // All intrinsics start with "llvm.arm.".
                         [IntrNoMem, Commutative]>;
   def int_arm_qsub : GCCBuiltin<"__builtin_arm_qsub">,
               Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
+  def int_arm_ssat : GCCBuiltin<"__builtin_arm_ssat">,
+              Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
+  def int_arm_usat : GCCBuiltin<"__builtin_arm_usat">,
+              Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
 }
 
 //===----------------------------------------------------------------------===//

diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index f211862..89500e3 100644 (file)
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -1835,6 +1835,9 @@ def USAT16 : AI<(outs GPR:$dst), (ins i32imm:$bit_pos, GPR:$a), DPFrm,
   let Inst{7-4} = 0b0011;
 }
 
+def : ARMV6Pat<(int_arm_ssat GPR:$a, imm:$pos), (SSATlsl imm:$pos, GPR:$a, 0)>;
+def : ARMV6Pat<(int_arm_usat GPR:$a, imm:$pos), (USATlsl imm:$pos, GPR:$a, 0)>;
+
 //===----------------------------------------------------------------------===//
 //  Bitwise Instructions.
 //

diff --git a/lib/Target/ARM/ARMInstrThumb2.td b/lib/Target/ARM/ARMInstrThumb2.td
index 7142de0..e106aab 100644 (file)
--- a/lib/Target/ARM/ARMInstrThumb2.td
+++ b/lib/Target/ARM/ARMInstrThumb2.td
@@ -1579,6 +1579,9 @@ def t2USAT16 : T2I<(outs GPR:$dst), (ins i32imm:$bit_pos, GPR:$a), NoItinerary,
   let Inst{7-6} = 0b00;    // imm2 = '00'
 }
 
+def : T2Pat<(int_arm_ssat GPR:$a, imm:$pos), (t2SSATlsl imm:$pos, GPR:$a, 0)>;
+def : T2Pat<(int_arm_usat GPR:$a, imm:$pos), (t2USATlsl imm:$pos, GPR:$a, 0)>;
+
 //===----------------------------------------------------------------------===//
 //  Shift and rotate Instructions.
 //