diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMInstrThumb2.td | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/llvm/lib/Target/ARM/ARMInstrThumb2.td b/llvm/lib/Target/ARM/ARMInstrThumb2.td index e1a526d2231..e961462983c 100644 --- a/llvm/lib/Target/ARM/ARMInstrThumb2.td +++ b/llvm/lib/Target/ARM/ARMInstrThumb2.td @@ -966,9 +966,6 @@ def t2REV16 : T2I<(outs GPR:$dst), (ins GPR:$src), (or (and (srl GPR:$src, (i32 8)), 0xFF0000), (and (shl GPR:$src, (i32 8)), 0xFF000000)))))]>; -///// -/// A8.6.137 REVSH -///// def t2REVSH : T2I<(outs GPR:$dst), (ins GPR:$src), "revsh", " $dst, $src", [(set GPR:$dst, @@ -976,7 +973,31 @@ def t2REVSH : T2I<(outs GPR:$dst), (ins GPR:$src), (or (srl (and GPR:$src, 0xFFFF), (i32 8)), (shl GPR:$src, (i32 8))), i16))]>; -// FIXME: PKHxx etc. +def t2PKHBT : T2I<(outs GPR:$dst), (ins GPR:$src1, GPR:$src2, i32imm:$shamt), + "pkhbt", " $dst, $src1, $src2, LSL $shamt", + [(set GPR:$dst, (or (and GPR:$src1, 0xFFFF), + (and (shl GPR:$src2, (i32 imm:$shamt)), + 0xFFFF0000)))]>; + +// Alternate cases for PKHBT where identities eliminate some nodes. +def : T2Pat<(or (and GPR:$src1, 0xFFFF), (and GPR:$src2, 0xFFFF0000)), + (t2PKHBT GPR:$src1, GPR:$src2, 0)>; +def : T2Pat<(or (and GPR:$src1, 0xFFFF), (shl GPR:$src2, imm16_31:$shamt)), + (t2PKHBT GPR:$src1, GPR:$src2, imm16_31:$shamt)>; + +def t2PKHTB : T2I<(outs GPR:$dst), (ins GPR:$src1, GPR:$src2, i32imm:$shamt), + "pkhtb", " $dst, $src1, $src2, ASR $shamt", + [(set GPR:$dst, (or (and GPR:$src1, 0xFFFF0000), + (and (sra GPR:$src2, imm16_31:$shamt), + 0xFFFF)))]>; + +// Alternate cases for PKHTB where identities eliminate some nodes. Note that +// a shift amount of 0 is *not legal* here, it is PKHBT instead. +def : T2Pat<(or (and GPR:$src1, 0xFFFF0000), (srl GPR:$src2, (i32 16))), + (t2PKHTB GPR:$src1, GPR:$src2, 16)>; +def : T2Pat<(or (and GPR:$src1, 0xFFFF0000), + (and (srl GPR:$src2, imm1_15:$shamt), 0xFFFF)), + (t2PKHTB GPR:$src1, GPR:$src2, imm1_15:$shamt)>; //===----------------------------------------------------------------------===// // Comparison Instructions... |
