TargetData assumes (and some regression tests depend on it) that the size of
an unspecified datatype in the datalayout is capped by the size of a pointer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33411 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/TargetData.cpp b/lib/Target/TargetData.cpp
index 0ae2e1a..3cfdd40 100644
--- a/lib/Target/TargetData.cpp
+++ b/lib/Target/TargetData.cpp
@@ -103,9 +103,9 @@
LittleEndian = false;
PointerMemSize = 8;
PointerABIAlignment = 8;
- DoubleABIAlignment = 8;
+ DoubleABIAlignment = 0;
FloatABIAlignment = 4;
- LongABIAlignment = 8;
+ LongABIAlignment = 0;
IntABIAlignment = 4;
ShortABIAlignment = 2;
ByteABIAlignment = 1;
@@ -114,9 +114,9 @@
BytePrefAlignment = ByteABIAlignment;
ShortPrefAlignment = ShortABIAlignment;
IntPrefAlignment = IntABIAlignment;
- LongPrefAlignment = LongABIAlignment;
+ LongPrefAlignment = 8;
FloatPrefAlignment = FloatABIAlignment;
- DoublePrefAlignment = DoubleABIAlignment;
+ DoublePrefAlignment = 8;
PointerPrefAlignment = PointerABIAlignment;
AggMinPrefAlignment = 0;
@@ -188,6 +188,13 @@
break;
}
}
+
+ // Unless explicitly specified, the alignments for longs and doubles is capped by
+ // pointer size.
+ if (LongABIAlignment == 0)
+ LongABIAlignment = LongPrefAlignment = PointerMemSize;
+ if (DoubleABIAlignment == 0)
+ DoubleABIAlignment = DoublePrefAlignment = PointerMemSize;
}
TargetData::TargetData(const Module *M) {