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Model fpscr to prevent fcmped / fcmpezs etc from being deleted.

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llvm-svn: 76390
This commit is contained in:
Evan Cheng 2009-07-20 02:12:31 +00:00
parent 1a10a060cb
commit 2f6b299d6f
2 changed files with 8 additions and 2 deletions
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6
lib/Target/ARM/ARMInstrVFP.td
View File

@ -103,6 +103,7 @@ def FADDS : ASbI<0b11100011, (outs SPR:$dst), (ins SPR:$a, SPR:$b),
[(set SPR:$dst, (fadd SPR:$a, SPR:$b))]>;
// These are encoded as unary instructions.
let Defs = [FPSCR] in {
def FCMPED : ADuI<0b11101011, 0b0100, 0b1100, (outs), (ins DPR:$a, DPR:$b),
"fcmped", " $a, $b",
[(arm_cmpfp DPR:$a, DPR:$b)]>;
@ -110,6 +111,7 @@ def FCMPED : ADuI<0b11101011, 0b0100, 0b1100, (outs), (ins DPR:$a, DPR:$b),
def FCMPES : ASuI<0b11101011, 0b0100, 0b1100, (outs), (ins SPR:$a, SPR:$b),
"fcmpes", " $a, $b",
[(arm_cmpfp SPR:$a, SPR:$b)]>;
}
def FDIVD : ADbI<0b11101000, (outs DPR:$dst), (ins DPR:$a, DPR:$b),
"fdivd", " $dst, $a, $b",
@ -170,6 +172,7 @@ def FABSS : ASuI<0b11101011, 0b0000, 0b1100, (outs SPR:$dst), (ins SPR:$a),
"fabss", " $dst, $a",
[(set SPR:$dst, (fabs SPR:$a))]>;
let Defs = [FPSCR] in {
def FCMPEZD : ADuI<0b11101011, 0b0101, 0b1100, (outs), (ins DPR:$a),
"fcmpezd", " $a",
[(arm_cmpfp0 DPR:$a)]>;
@ -177,6 +180,7 @@ def FCMPEZD : ADuI<0b11101011, 0b0101, 0b1100, (outs), (ins DPR:$a),
def FCMPEZS : ASuI<0b11101011, 0b0101, 0b1100, (outs), (ins SPR:$a),
"fcmpezs", " $a",
[(arm_cmpfp0 SPR:$a)]>;
}
def FCVTDS : ASuI<0b11101011, 0b0111, 0b1100, (outs DPR:$dst), (ins SPR:$a),
"fcvtds", " $dst, $a",
@ -389,7 +393,7 @@ def FNEGScc : ASuI<0b11101011, 0b0001, 0b0100,
// Misc.
//
let Defs = [CPSR] in
let Defs = [CPSR], Uses = [FPSCR] in
def FMSTAT : VFPAI<(outs), (ins), VFPMiscFrm, "fmstat", "", [(arm_fmstat)]> {
let Inst{27-20} = 0b11101111;
let Inst{19-16} = 0b0001;

2
lib/Target/ARM/ARMRegisterInfo.td
View File

@ -108,6 +108,8 @@ def Q15 : ARMReg<15, "q15", [D30, D31]>;
// Current Program Status Register.
def CPSR : ARMReg<0, "cpsr">;
def FPSCR : ARMReg<1, "fpscr">;
// Register classes.
//
// pc == Program Counter