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MOVi16 and MOVT ARM mode encodings.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116498 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2010-10-14 18:54:27 +00:00
parent ab00e9f498
commit 1de588df69
2 changed files with 36 additions and 7 deletions
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26
lib/Target/ARM/ARMInstrInfo.td
View File

@ -1634,6 +1634,8 @@ def MOVr_TC : AsI1<0b1101, (outs tcGPR:$Rd), (ins tcGPR:$Rm), DPFrm,
def MOVs : AsI1<0b1101, (outs GPR:$Rd), (ins so_reg:$src),
DPSoRegFrm, IIC_iMOVsr,
"mov", "\t$Rd, $src", [(set GPR:$Rd, so_reg:$src)]>, UnaryDP {
bits<12> src;
let Inst{11-0} = src;
let Inst{25} = 0;
}
@ -1649,23 +1651,33 @@ def MOVi : AsI1<0b1101, (outs GPR:$Rd), (ins so_imm:$imm), DPFrm, IIC_iMOVi,
}
let isReMaterializable = 1, isAsCheapAsAMove = 1 in
def MOVi16 : AI1<0b1000, (outs GPR:$dst), (ins i32imm:$src),
def MOVi16 : AI1<0b1000, (outs GPR:$Rd), (ins i32imm:$imm),
DPFrm, IIC_iMOVi,
"movw", "\t$dst, $src",
[(set GPR:$dst, imm0_65535:$src)]>,
"movw", "\t$Rd, $imm",
[(set GPR:$Rd, imm0_65535:$imm)]>,
Requires<[IsARM, HasV6T2]>, UnaryDP {
bits<4> Rd;
bits<16> imm;
let Inst{15-12} = Rd;
let Inst{11-0} = imm{11-0};
let Inst{19-16} = imm{15-12};
let Inst{20} = 0;
let Inst{25} = 1;
}
let Constraints = "$src = $dst" in
def MOVTi16 : AI1<0b1010, (outs GPR:$dst), (ins GPR:$src, i32imm:$imm),
let Constraints = "$src = $Rd" in
def MOVTi16 : AI1<0b1010, (outs GPR:$Rd), (ins GPR:$src, i32imm:$imm),
DPFrm, IIC_iMOVi,
"movt", "\t$dst, $imm",
[(set GPR:$dst,
"movt", "\t$Rd, $imm",
[(set GPR:$Rd,
(or (and GPR:$src, 0xffff),
lo16AllZero:$imm))]>, UnaryDP,
Requires<[IsARM, HasV6T2]> {
bits<4> Rd;
bits<16> imm;
let Inst{15-12} = Rd;
let Inst{11-0} = imm{11-0};
let Inst{19-16} = imm{15-12};
let Inst{20} = 0;
let Inst{25} = 1;
}

17
test/MC/ARM/simple-encoding.ll
View File

@ -74,4 +74,21 @@ entry:
ret i32 %add
}
define i32 @f8(i32 %a) nounwind readnone ssp {
entry:
; CHECK: f8
; CHECK: movt r0, #42405 @ encoding: [0xa5,0x05,0x4a,0xe3]
%and = and i32 %a, 65535
%or = or i32 %and, -1515913216
ret i32 %or
}
define i32 @f9() nounwind readnone ssp {
entry:
; CHECK: f9
; CHECK: movw r0, #42405 @ encoding: [0xa5,0x05,0x0a,0xe3]
ret i32 42405
}
declare void @llvm.trap() nounwind