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if we have a large GEP offset on a 32-bit or other target, make

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sure to print the value properly sext'd to the right pointer size.
This fixes PR3481.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63843 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-02-05 06:55:21 +00:00
parent 5734c94ec2
commit 4798bbeaf5
2 changed files with 15 additions and 0 deletions
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6
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
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@ -815,6 +815,12 @@ void AsmPrinter::EmitConstantValueOnly(const Constant *CV) {
SmallVector<Value*, 8> idxVec(CE->op_begin()+1, CE->op_end());
if (int64_t Offset = TD->getIndexedOffset(ptrVal->getType(), &idxVec[0],
idxVec.size())) {
// Truncate/sext the offset to the pointer size.
if (TD->getPointerSizeInBits() != 64) {
int SExtAmount = 64-TD->getPointerSizeInBits();
Offset = (Offset << SExtAmount) >> SExtAmount;
}
if (Offset)
O << '(';
EmitConstantValueOnly(ptrVal);

9
test/CodeGen/X86/2009-02-04-sext-i64-gep.ll Normal file
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@ -0,0 +1,9 @@
; RUN: llvm-as < %s | llc | grep { - 92}
; PR3481
; The offset should print as -92, not +17179869092
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-f80:32:32"
target triple = "i386-pc-linux-gnu"
@p = common global [10 x i32] zeroinitializer, align 4 ; <[10 x i32]*>
@g = global [1 x i32*] [ i32* bitcast (i8* getelementptr (i8* bitcast
([10 x i32]* @p to i8*), i64 17179869092) to i32*) ], align 4