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Thumb's forced-PC-alignment requirement applies to the _total_ displacement, not just to the fragment relative
portion. While the fragment boundary is usually already aligned, it is possible for it not to be, which would lead to a non-aligned final displacement. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122091 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -254,12 +254,12 @@ bool MCAssembler::EvaluateFixup(const MCAsmLayout &Layout,
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"FKF_IsAlignedDownTo32Bits is only allowed on PC-relative fixups!");
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if (IsPCRel) {
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uint32_t Offset = Fixup.getOffset();
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uint32_t Offset = Layout.getFragmentOffset(DF) + Fixup.getOffset();
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// A number of ARM fixups in Thumb mode require that the effective PC
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// address be determined as the 32-bit aligned version of the actual offset.
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if (ShouldAlignPC) Offset &= ~0x3;
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Value -= Layout.getFragmentOffset(DF) + Offset;
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Value -= Offset;
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}
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// ARM fixups based from a thumb function address need to have the low
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