diff options
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 13 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/pr37359.ll | 17 |
2 files changed, 28 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index b6f691dacc0..740147fd79e 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -7741,8 +7741,17 @@ void SelectionDAGBuilder::emitInlineAsmError(ImmutableCallSite CS, // Make sure we leave the DAG in a valid state const TargetLowering &TLI = DAG.getTargetLoweringInfo(); - auto VT = TLI.getValueType(DAG.getDataLayout(), CS.getType()); - setValue(CS.getInstruction(), DAG.getUNDEF(VT)); + SmallVector<EVT, 1> ValueVTs; + ComputeValueVTs(TLI, DAG.getDataLayout(), CS->getType(), ValueVTs); + + if (ValueVTs.empty()) + return; + + SmallVector<SDValue, 1> Ops; + for (unsigned i = 0, e = ValueVTs.size(); i != e; ++i) + Ops.push_back(DAG.getUNDEF(ValueVTs[i])); + + setValue(CS.getInstruction(), DAG.getMergeValues(Ops, getCurSDLoc())); } void SelectionDAGBuilder::visitVAStart(const CallInst &I) { diff --git a/llvm/test/CodeGen/X86/pr37359.ll b/llvm/test/CodeGen/X86/pr37359.ll new file mode 100644 index 00000000000..40cddb21016 --- /dev/null +++ b/llvm/test/CodeGen/X86/pr37359.ll @@ -0,0 +1,17 @@ +; RUN: not llc -o /dev/null %s 2>&1 | FileCheck %s +target triple = "x86_64--" + +@a = global i32 0, align 4 + +; CHECK: error: couldn't allocate input reg for constraint 'x' +define i32 @main() { +entry: + %0 = load i32, i32* @a, align 4 + %cmp = icmp ne i32 %0, 0 + %1 = call { i32, i32 } asm "", "={ax},={dx},x,~{dirflag},~{fpsr},~{flags}"(i1 %cmp) + %asmresult = extractvalue { i32, i32 } %1, 0 + %asmresult1 = extractvalue { i32, i32 } %1, 1 + store i32 %asmresult, i32* @a, align 4 + store i32 %asmresult1, i32* @a, align 4 + ret i32 0 +} |
