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Generate an error message instead of asserting or segfaulting when we can't 

handle indirect register inputs.
rdar://13322011

llvm-svn: 176367
This commit is contained in:
Chad Rosier 2013-03-01 19:12:05 +00:00
parent 12f98fae98
commit b3864609cf
2 changed files with 15 additions and 0 deletions
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1
llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -6168,6 +6168,7 @@ void SelectionDAGBuilder::visitInlineAsm(ImmutableCallSite CS) {
Ctx.emitError(CS.getInstruction(), "inline asm not supported yet:"
" don't know how to handle tied "
"indirect register inputs");
report_fatal_error("Cannot handle indirect register inputs!");
}
RegsForValue MatchedRegs;

14
llvm/test/CodeGen/ARM/indirect-reg-input.ll Normal file
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@ -0,0 +1,14 @@
; RUN: llc < %s -march=arm -mcpu=cortex-a8 2>&1 | FileCheck %s
; Check for error message:
; CHECK: error: inline asm not supported yet: don't know how to handle tied indirect register inputs
%struct.my_stack = type { %struct.myjmp_buf }
%struct.myjmp_buf = type { [6 x i32] }
define void @switch_to_stack(%struct.my_stack* %stack) nounwind {
entry:
%regs = getelementptr inbounds %struct.my_stack* %stack, i32 0, i32 0
tail call void asm "\0A", "=*r,*0"(%struct.myjmp_buf* %regs, %struct.myjmp_buf* %regs)
ret void
}