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

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109813 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman 2010-07-29 22:48:09 +00:00
parent 575be08e8a
commit 0e0a20eb38
3 changed files with 10 additions and 0 deletions
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4
include/llvm/IntrinsicsARM.td
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@ -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]>;
}
//===----------------------------------------------------------------------===//

3
lib/Target/ARM/ARMInstrInfo.td
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@ -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.
//

3
lib/Target/ARM/ARMInstrThumb2.td
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@ -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.
//