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Add Thumb2 pkhbt / pkhtb.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74895 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2009-07-07 05:35:52 +00:00
parent 5b9fcd1c8e
commit 40289b041a
2 changed files with 98 additions and 4 deletions
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29
lib/Target/ARM/ARMInstrThumb2.td
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@ -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...

73
test/CodeGen/Thumb2/thumb2-pack.ll Normal file
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@ -0,0 +1,73 @@
; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | \
; RUN: grep pkhbt | count 5
; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | \
; RUN: grep pkhtb | count 4
define i32 @test1(i32 %X, i32 %Y) {
%tmp1 = and i32 %X, 65535 ; <i32> [#uses=1]
%tmp4 = shl i32 %Y, 16 ; <i32> [#uses=1]
%tmp5 = or i32 %tmp4, %tmp1 ; <i32> [#uses=1]
ret i32 %tmp5
}
define i32 @test1a(i32 %X, i32 %Y) {
%tmp19 = and i32 %X, 65535 ; <i32> [#uses=1]
%tmp37 = shl i32 %Y, 16 ; <i32> [#uses=1]
%tmp5 = or i32 %tmp37, %tmp19 ; <i32> [#uses=1]
ret i32 %tmp5
}
define i32 @test2(i32 %X, i32 %Y) {
%tmp1 = and i32 %X, 65535 ; <i32> [#uses=1]
%tmp3 = shl i32 %Y, 12 ; <i32> [#uses=1]
%tmp4 = and i32 %tmp3, -65536 ; <i32> [#uses=1]
%tmp57 = or i32 %tmp4, %tmp1 ; <i32> [#uses=1]
ret i32 %tmp57
}
define i32 @test3(i32 %X, i32 %Y) {
%tmp19 = and i32 %X, 65535 ; <i32> [#uses=1]
%tmp37 = shl i32 %Y, 18 ; <i32> [#uses=1]
%tmp5 = or i32 %tmp37, %tmp19 ; <i32> [#uses=1]
ret i32 %tmp5
}
define i32 @test4(i32 %X, i32 %Y) {
%tmp1 = and i32 %X, 65535 ; <i32> [#uses=1]
%tmp3 = and i32 %Y, -65536 ; <i32> [#uses=1]
%tmp46 = or i32 %tmp3, %tmp1 ; <i32> [#uses=1]
ret i32 %tmp46
}
define i32 @test5(i32 %X, i32 %Y) {
%tmp17 = and i32 %X, -65536 ; <i32> [#uses=1]
%tmp2 = bitcast i32 %Y to i32 ; <i32> [#uses=1]
%tmp4 = lshr i32 %tmp2, 16 ; <i32> [#uses=2]
%tmp5 = or i32 %tmp4, %tmp17 ; <i32> [#uses=1]
ret i32 %tmp5
}
define i32 @test5a(i32 %X, i32 %Y) {
%tmp110 = and i32 %X, -65536 ; <i32> [#uses=1]
%tmp37 = lshr i32 %Y, 16 ; <i32> [#uses=1]
%tmp39 = bitcast i32 %tmp37 to i32 ; <i32> [#uses=1]
%tmp5 = or i32 %tmp39, %tmp110 ; <i32> [#uses=1]
ret i32 %tmp5
}
define i32 @test6(i32 %X, i32 %Y) {
%tmp1 = and i32 %X, -65536 ; <i32> [#uses=1]
%tmp37 = lshr i32 %Y, 12 ; <i32> [#uses=1]
%tmp38 = bitcast i32 %tmp37 to i32 ; <i32> [#uses=1]
%tmp4 = and i32 %tmp38, 65535 ; <i32> [#uses=1]
%tmp59 = or i32 %tmp4, %tmp1 ; <i32> [#uses=1]
ret i32 %tmp59
}
define i32 @test7(i32 %X, i32 %Y) {
%tmp1 = and i32 %X, -65536 ; <i32> [#uses=1]
%tmp3 = ashr i32 %Y, 18 ; <i32> [#uses=1]
%tmp4 = and i32 %tmp3, 65535 ; <i32> [#uses=1]
%tmp57 = or i32 %tmp4, %tmp1 ; <i32> [#uses=1]
ret i32 %tmp57
}