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authorDan Gohman <gohman@apple.com>2011-12-20 00:02:33 +0000
committerDan Gohman <gohman@apple.com>2011-12-20 00:02:33 +0000
commite3376ecd504300ae529c902135f51baffbdc2824 (patch)
tree4c961d5b28a0b323e77dae5450bd8154cb53fb18 /lib/CodeGen
parent9b0878512fb57ee4b0bc483509e4d9f4f0b9e426 (diff)
Add basic generic CodeGen support for half.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146927 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
-rw-r--r--lib/CodeGen/AsmPrinter/AsmPrinter.cpp25
-rw-r--r--lib/CodeGen/SelectionDAG/TargetLowering.cpp31
2 files changed, 39 insertions, 17 deletions
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index d13eae098f..82860c2657 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -1694,16 +1694,14 @@ static void EmitGlobalConstantStruct(const ConstantStruct *CS,
static void EmitGlobalConstantFP(const ConstantFP *CFP, unsigned AddrSpace,
AsmPrinter &AP) {
- // FP Constants are printed as integer constants to avoid losing
- // precision.
- if (CFP->getType()->isDoubleTy()) {
+ if (CFP->getType()->isHalfTy()) {
if (AP.isVerbose()) {
- double Val = CFP->getValueAPF().convertToDouble();
- AP.OutStreamer.GetCommentOS() << "double " << Val << '\n';
+ SmallString<10> Str;
+ CFP->getValueAPF().toString(Str);
+ AP.OutStreamer.GetCommentOS() << "half " << Str << '\n';
}
-
uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
- AP.OutStreamer.EmitIntValue(Val, 8, AddrSpace);
+ AP.OutStreamer.EmitIntValue(Val, 2, AddrSpace);
return;
}
@@ -1717,6 +1715,19 @@ static void EmitGlobalConstantFP(const ConstantFP *CFP, unsigned AddrSpace,
return;
}
+ // FP Constants are printed as integer constants to avoid losing
+ // precision.
+ if (CFP->getType()->isDoubleTy()) {
+ if (AP.isVerbose()) {
+ double Val = CFP->getValueAPF().convertToDouble();
+ AP.OutStreamer.GetCommentOS() << "double " << Val << '\n';
+ }
+
+ uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue();
+ AP.OutStreamer.EmitIntValue(Val, 8, AddrSpace);
+ return;
+ }
+
if (CFP->getType()->isX86_FP80Ty()) {
// all long double variants are printed as hex
// API needed to prevent premature destruction
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 9ced1ac243..9d7a41d014 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -572,21 +572,22 @@ TargetLowering::TargetLowering(const TargetMachine &tm,
// ConstantFP nodes default to expand. Targets can either change this to
// Legal, in which case all fp constants are legal, or use isFPImmLegal()
// to optimize expansions for certain constants.
+ setOperationAction(ISD::ConstantFP, MVT::f16, Expand);
setOperationAction(ISD::ConstantFP, MVT::f32, Expand);
setOperationAction(ISD::ConstantFP, MVT::f64, Expand);
setOperationAction(ISD::ConstantFP, MVT::f80, Expand);
// These library functions default to expand.
- setOperationAction(ISD::FLOG , MVT::f64, Expand);
- setOperationAction(ISD::FLOG2, MVT::f64, Expand);
- setOperationAction(ISD::FLOG10, MVT::f64, Expand);
- setOperationAction(ISD::FEXP , MVT::f64, Expand);
- setOperationAction(ISD::FEXP2, MVT::f64, Expand);
- setOperationAction(ISD::FFLOOR, MVT::f64, Expand);
- setOperationAction(ISD::FNEARBYINT, MVT::f64, Expand);
- setOperationAction(ISD::FCEIL, MVT::f64, Expand);
- setOperationAction(ISD::FRINT, MVT::f64, Expand);
- setOperationAction(ISD::FTRUNC, MVT::f64, Expand);
+ setOperationAction(ISD::FLOG , MVT::f16, Expand);
+ setOperationAction(ISD::FLOG2, MVT::f16, Expand);
+ setOperationAction(ISD::FLOG10, MVT::f16, Expand);
+ setOperationAction(ISD::FEXP , MVT::f16, Expand);
+ setOperationAction(ISD::FEXP2, MVT::f16, Expand);
+ setOperationAction(ISD::FFLOOR, MVT::f16, Expand);
+ setOperationAction(ISD::FNEARBYINT, MVT::f16, Expand);
+ setOperationAction(ISD::FCEIL, MVT::f16, Expand);
+ setOperationAction(ISD::FRINT, MVT::f16, Expand);
+ setOperationAction(ISD::FTRUNC, MVT::f16, Expand);
setOperationAction(ISD::FLOG , MVT::f32, Expand);
setOperationAction(ISD::FLOG2, MVT::f32, Expand);
setOperationAction(ISD::FLOG10, MVT::f32, Expand);
@@ -597,6 +598,16 @@ TargetLowering::TargetLowering(const TargetMachine &tm,
setOperationAction(ISD::FCEIL, MVT::f32, Expand);
setOperationAction(ISD::FRINT, MVT::f32, Expand);
setOperationAction(ISD::FTRUNC, MVT::f32, Expand);
+ setOperationAction(ISD::FLOG , MVT::f64, Expand);
+ setOperationAction(ISD::FLOG2, MVT::f64, Expand);
+ setOperationAction(ISD::FLOG10, MVT::f64, Expand);
+ setOperationAction(ISD::FEXP , MVT::f64, Expand);
+ setOperationAction(ISD::FEXP2, MVT::f64, Expand);
+ setOperationAction(ISD::FFLOOR, MVT::f64, Expand);
+ setOperationAction(ISD::FNEARBYINT, MVT::f64, Expand);
+ setOperationAction(ISD::FCEIL, MVT::f64, Expand);
+ setOperationAction(ISD::FRINT, MVT::f64, Expand);
+ setOperationAction(ISD::FTRUNC, MVT::f64, Expand);
// Default ISD::TRAP to expand (which turns it into abort).
setOperationAction(ISD::TRAP, MVT::Other, Expand);