1; RUN: llc < %s -stop-after=finalize-isel -mtriple=x86_64-unknown-linux | FileCheck %s --implicit-check-not=FAKE_USE 2; 3; Make sure SelectionDAG does not crash handling fake uses of zero-length arrays 4; and structs. Check also that they are not propagated. 5; 6; Generated from the following source with 7; clang -fextend-variable-liveness -S -emit-llvm -O2 -mllvm -stop-after=safe-stack -o test.mir test.cpp 8; 9; int main () 10; { int array[0]; } 11; 12; 13; CHECK: liveins: $[[IN_REG:[a-zA-Z0-9]+]] 14; CHECK: %[[IN_VREG:[a-zA-Z0-9]+]]:gr32 = COPY $[[IN_REG]] 15; CHECK: FAKE_USE %[[IN_VREG]] 16 17source_filename = "test.ll" 18target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 19 20define hidden i32 @main([0 x i32] %zero, [1 x i32] %one) local_unnamed_addr optdebug { 21entry: 22 notail call void (...) @bar([0 x i32] %zero) 23 notail call void (...) @baz([1 x i32] %one) 24 notail call void (...) @llvm.fake.use([0 x i32] %zero) 25 notail call void (...) @llvm.fake.use([1 x i32] %one) 26 ret i32 0 27} 28 29declare void @bar([0 x i32] %a) 30declare void @baz([1 x i32] %a) 31