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LegalizeTypes support for what seems to be the

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only missing ppc long double operations: FNEG
and FP_EXTEND.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53723 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2008-07-17 17:35:14 +00:00
parent 29681a5385
commit 79ada108dd
3 changed files with 36 additions and 0 deletions
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16
lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
View File

@ -531,6 +531,8 @@ void DAGTypeLegalizer::ExpandFloatResult(SDNode *N, unsigned ResNo) {
case ISD::FADD: ExpandFloatRes_FADD(N, Lo, Hi); break;
case ISD::FDIV: ExpandFloatRes_FDIV(N, Lo, Hi); break;
case ISD::FMUL: ExpandFloatRes_FMUL(N, Lo, Hi); break;
case ISD::FNEG: ExpandFloatRes_FNEG(N, Lo, Hi); break;
case ISD::FP_EXTEND: ExpandFloatRes_FP_EXTEND(N, Lo, Hi); break;
case ISD::FSUB: ExpandFloatRes_FSUB(N, Lo, Hi); break;
case ISD::LOAD: ExpandFloatRes_LOAD(N, Lo, Hi); break;
case ISD::SINT_TO_FP:
@ -609,6 +611,20 @@ void DAGTypeLegalizer::ExpandFloatRes_FMUL(SDNode *N, SDOperand &Lo,
Lo = Call.getOperand(0); Hi = Call.getOperand(1);
}
void DAGTypeLegalizer::ExpandFloatRes_FNEG(SDNode *N, SDOperand &Lo,
SDOperand &Hi) {
GetExpandedFloat(N->getOperand(0), Lo, Hi);
Lo = DAG.getNode(ISD::FNEG, Lo.getValueType(), Lo);
Hi = DAG.getNode(ISD::FNEG, Hi.getValueType(), Hi);
}
void DAGTypeLegalizer::ExpandFloatRes_FP_EXTEND(SDNode *N, SDOperand &Lo,
SDOperand &Hi) {
MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0));
Hi = DAG.getNode(ISD::FP_EXTEND, NVT, N->getOperand(0));
Lo = DAG.getConstantFP(APFloat(APInt(NVT.getSizeInBits(), 0)), NVT);
}
void DAGTypeLegalizer::ExpandFloatRes_FSUB(SDNode *N, SDOperand &Lo,
SDOperand &Hi) {
SDOperand Ops[2] = { N->getOperand(0), N->getOperand(1) };

2
lib/CodeGen/SelectionDAG/LegalizeTypes.h
View File

@ -374,6 +374,8 @@ private:
void ExpandFloatRes_FADD (SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandFloatRes_FDIV (SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandFloatRes_FMUL (SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandFloatRes_FNEG (SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandFloatRes_FP_EXTEND (SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandFloatRes_FSUB (SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandFloatRes_LOAD (SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandFloatRes_XINT_TO_FP(SDNode *N, SDOperand &Lo, SDOperand &Hi);

18
test/CodeGen/PowerPC/2008-07-17-Fneg.ll Normal file
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@ -0,0 +1,18 @@
; RUN: llvm-as < %s | llc
target datalayout = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f128:64:128"
target triple = "powerpc-apple-darwin9"
define hidden i64 @__fixunstfdi(ppc_fp128 %a) nounwind {
entry:
br i1 false, label %bb3, label %bb4
bb3: ; preds = %entry
sub ppc_fp128 0xM80000000000000000000000000000000, 0xM00000000000000000000000000000000 ; <ppc_fp128>:0 [#uses=1]
fptoui ppc_fp128 %0 to i32 ; <i32>:1 [#uses=1]
zext i32 %1 to i64 ; <i64>:2 [#uses=1]
sub i64 0, %2 ; <i64>:3 [#uses=1]
ret i64 %3
bb4: ; preds = %entry
ret i64 0
}