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[mips] Modify definitions of floating point branch instructions.

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No functionality change.

llvm-svn: 170076
This commit is contained in:
Akira Hatanaka 2012-12-13 01:32:36 +00:00
parent 1adf30b9d9
commit a2c716142c
2 changed files with 26 additions and 2 deletions
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15
lib/Target/Mips/MipsInstrFPU.td
View File

@ -273,6 +273,17 @@ class SWXC1_FT<string opstr, RegisterClass DRC, RegisterClass PRC,
!strconcat(opstr, "\t$fs, ${index}(${base})"),
[(OpNode DRC:$fs, (add PRC:$base, PRC:$index))], Itin, FrmFI>;
class BC1F_FT<string opstr, InstrItinClass Itin,
SDPatternOperator Op = null_frag> :
InstSE<(outs), (ins brtarget:$offset), !strconcat(opstr, "\t$offset"),
[(MipsFPBrcond Op, bb:$offset)], Itin, FrmFI> {
let isBranch = 1;
let isTerminator = 1;
let hasDelaySlot = 1;
let Defs = [AT];
let Uses = [FCR31];
}
//===----------------------------------------------------------------------===//
// Floating Point Instructions
//===----------------------------------------------------------------------===//
@ -495,8 +506,8 @@ let isBranch=1, isTerminator=1, hasDelaySlot=1, base=0x8, Uses=[FCR31] in
}
let DecoderMethod = "DecodeBC1" in {
def BC1F : FBRANCH<0, 0, MIPS_BRANCH_F, "bc1f">;
def BC1T : FBRANCH<0, 1, MIPS_BRANCH_T, "bc1t">;
def BC1F : BC1F_FT<"bc1f", IIBranch, MIPS_BRANCH_F>, BC1F_FM<0, 0>;
def BC1T : BC1F_FT<"bc1t", IIBranch, MIPS_BRANCH_T>, BC1F_FM<0, 1>;
}
//===----------------------------------------------------------------------===//
// Floating Point Flag Conditions

13
lib/Target/Mips/MipsInstrFormats.td
View File

@ -453,3 +453,16 @@ class SWXC1_FM<bits<6> funct> {
let Inst{10-6} = 0;
let Inst{5-0} = funct;
}
class BC1F_FM<bit nd, bit tf> {
bits<16> offset;
bits<32> Inst;
let Inst{31-26} = 0x11;
let Inst{25-21} = 0x8;
let Inst{20-18} = 0; // cc
let Inst{17} = nd;
let Inst{16} = tf;
let Inst{15-0} = offset;
}