Can't handle offset and scale if rip-relative addressing is to be used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40703 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 939ddf8..91da4c0 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -4449,14 +4449,18 @@
return false;
if (AM.BaseGV) {
- // X86-64 only supports addr of globals in small code model.
- if (Subtarget->is64Bit() &&
- getTargetMachine().getCodeModel() != CodeModel::Small)
- return false;
-
- // We can only fold this if we don't need a load either.
+ // We can only fold this if we don't need an extra load.
if (Subtarget->GVRequiresExtraLoad(AM.BaseGV, getTargetMachine(), false))
return false;
+
+ // X86-64 only supports addr of globals in small code model.
+ if (Subtarget->is64Bit()) {
+ if (getTargetMachine().getCodeModel() != CodeModel::Small)
+ return false;
+ // If lower 4G is not available, then we must use rip-relative addressing.
+ if (AM.BaseOffs || AM.Scale > 1)
+ return false;
+ }
}
switch (AM.Scale) {