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Allow the asm printer to print fp128 values properly.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171866 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tim Northover 2013-01-08 16:56:23 +00:00
parent 3c00336c7e
commit 90f011e0ba
3 changed files with 30 additions and 9 deletions
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21
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
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@ -1784,27 +1784,30 @@ static void emitGlobalConstantFP(const ConstantFP *CFP, unsigned AddrSpace,
return;
}
if (CFP->getType()->isX86_FP80Ty()) {
if (CFP->getType()->isX86_FP80Ty() || CFP->getType()->isFP128Ty()) {
// all long double variants are printed as hex
// API needed to prevent premature destruction
APInt API = CFP->getValueAPF().bitcastToAPInt();
const uint64_t *p = API.getRawData();
if (AP.isVerbose()) {
// Convert to double so we can print the approximate val as a comment.
APFloat DoubleVal = CFP->getValueAPF();
bool ignored;
DoubleVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven,
&ignored);
AP.OutStreamer.GetCommentOS() << "x86_fp80 ~= "
<< DoubleVal.convertToDouble() << '\n';
SmallString<8> StrVal;
CFP->getValueAPF().toString(StrVal);
const char *TyNote = CFP->getType()->isFP128Ty() ? "fp128 " : "x86_fp80 ";
AP.OutStreamer.GetCommentOS() << TyNote << StrVal << '\n';
}
// The 80-bit type is made of a 64-bit and 16-bit value, the 128-bit has 2
// 64-bit words.
uint32_t TrailingSize = CFP->getType()->isFP128Ty() ? 8 : 2;
if (AP.TM.getDataLayout()->isBigEndian()) {
AP.OutStreamer.EmitIntValue(p[1], 2, AddrSpace);
AP.OutStreamer.EmitIntValue(p[1], TrailingSize, AddrSpace);
AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
} else {
AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace);
AP.OutStreamer.EmitIntValue(p[1], 2, AddrSpace);
AP.OutStreamer.EmitIntValue(p[1], TrailingSize, AddrSpace);
}
// Emit the tail padding for the long double.

10
test/CodeGen/ARM/fp128.ll Normal file
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@ -0,0 +1,10 @@
; RUN: llc -march=arm < %s | FileCheck --check-prefix=LITTLEENDIAN %s
@var = global fp128 0xL00000000000000008000000000000000
; CHECK-LITTLEENDIAN: var:
; CHECK-LITTLEENDIAN-NEXT: .long 0 @ fp128 -0
; CHECK-LITTLEENDIAN-NEXT: .long 0
; CHECK-LITTLEENDIAN-NEXT: .long 0
; CHECK-LITTLEENDIAN-NEXT: .long 2147483648

8
test/CodeGen/PowerPC/fp128.ll Normal file
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@ -0,0 +1,8 @@
; RUN: llc -march=ppc64 < %s | FileCheck --check-prefix=BIGENDIAN %s
@var = global fp128 0xL00000000000000008000000000000000
; CHECK-BIGENDIAN: var:
; CHECK-BIGENDIAN-NEXT: .quad -9223372036854775808 # fp128 -0
; CHECK-BIGENDIAN-NEXT: .quad 0