http://llvm.org/bugs/show_bug.cgi?id=11398
Bug #: 11398
Summary: Incorrect generation of movapd for unaligned load
Product: libraries
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 7624
--> http://llvm.org/bugs/attachment.cgi?id=7624
Example
For x86_64, an instruction like:
%0 = load <2 x double>* %whatever, align 8, !tbaa !0
can get assembled into a movapd instruction (using trunk r144649). This,
however, causes a segmentation fault because movapd requires aligned data. I've
attached an example file that suffers from this problem (see the very first
instruction in the main function).
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