[Stack Alignment] emit warning instead of a hard error
Per discussion in rdar://13127907, we should emit a hard error only if
people write code where the requested alignment is larger than achievable
and assumes the low bits are zeros. A warning should be good enough when
we are not sure if the source code assumes the low bits are zeros.
rdar://13127907
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174336 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index 3d7d20d..4a9a62a 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -479,11 +479,11 @@
if (!ShouldClamp || PrefAlign <= StackAlign)
return PrefAlign;
if (Alloca && MinAlign > StackAlign)
- Alloca->getParent()->getContext().emitError(Alloca,
- "Requested Minimal Alignment exceeds the Stack Alignment!");
+ Alloca->getParent()->getContext().emitWarning(Alloca,
+ "Requested alignment exceeds the stack alignment!");
else
assert(MinAlign <= StackAlign &&
- "Requested Minimal Alignment exceeds the Stack Alignment!");
+ "Requested alignment exceeds the stack alignment!");
return StackAlign;
}