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Generalize an assert.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121851 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2010-12-15 07:12:24 +00:00
parent ef17f08dbc
commit b35d56c2fe
2 changed files with 8 additions and 1 deletions
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6
include/llvm/Support/MathExtras.h
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@@ -76,6 +76,12 @@ inline bool isUIntN(unsigned N, uint64_t x) {
return x == (x & (~0ULL >> (64 - N))); return x == (x & (~0ULL >> (64 - N)));
} }
/// isIIntN - Checks if an signed integer fits into the given (dynamic)
/// bit width.
inline bool isIntN(unsigned N, int64_t x) {
return N >= 64 || (-(INT64_C(1)<<(N-1)) <= x && x < (INT64_C(1)<<(N-1)));
}
/// isMask_32 - This function returns true if the argument is a sequence of ones /// isMask_32 - This function returns true if the argument is a sequence of ones
/// starting at the least significant bit with the remainder zero (32 bit /// starting at the least significant bit with the remainder zero (32 bit
/// version). Ex. isMask_32(0x0000FFFFU) == true. /// version). Ex. isMask_32(0x0000FFFFU) == true.

3
lib/MC/MCStreamer.cpp
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@@ -48,7 +48,8 @@ void MCStreamer::EmitDwarfSetLineAddr(int64_t LineDelta,
void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size, void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size,
unsigned AddrSpace) { unsigned AddrSpace) {
assert(Size <= 8 && "Invalid size"); assert(Size <= 8 && "Invalid size");
assert(!(Size == 1 && (signed)Value > 255) && "Invalid size"); unsigned Bits = 8 * Size;
assert((isUIntN(Bits, Value) || isIntN(Bits, Value)) && "Invalid size");
char buf[8]; char buf[8];
// FIXME: Endianness assumption. // FIXME: Endianness assumption.
for (unsigned i = 0; i != Size; ++i) for (unsigned i = 0; i != Size; ++i)