From af3a5420aeb421e83694745c53141683caa123cb Mon Sep 17 00:00:00 2001 From: Logan Chien Date: Wed, 20 Feb 2013 12:21:33 +0000 Subject: Fix thumbv5e frame lowering assertion failure. It is possible that frame pointer is not found in the callee saved info, thus FramePtrSpillFI may be incorrect if we don't check the result of hasFP(MF). Besides, if we enable the stack coloring algorithm, there will be an assertion to ensure the slot is live. But in the test case, %var1 is not live in the prologue of the function, and we will get the assertion failure. Note: There is similar code in ARMFrameLowering.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175616 91177308-0d34-0410-b5e6-96231b3b80d8 --- .../Thumb/stack-coloring-without-frame-ptr.ll | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 test/CodeGen/Thumb/stack-coloring-without-frame-ptr.ll (limited to 'test/CodeGen/Thumb') diff --git a/test/CodeGen/Thumb/stack-coloring-without-frame-ptr.ll b/test/CodeGen/Thumb/stack-coloring-without-frame-ptr.ll new file mode 100644 index 0000000000..3f6407a0a3 --- /dev/null +++ b/test/CodeGen/Thumb/stack-coloring-without-frame-ptr.ll @@ -0,0 +1,29 @@ +; RUN: llc < %s -march=thumb -mcpu=arm1022e + +%iterator = type { i8**, i8**, i8**, i8*** } +%insert_iterator = type { %deque*, %iterator } +%deque = type { %iterator, %iterator, i8***, i32 } + +define i32 @test_thumbv5e_fp_elim() nounwind optsize { +entry: + %var1 = alloca %iterator, align 4 + %var2 = alloca %insert_iterator, align 4 + %var3 = alloca %deque, align 4 + + %0 = bitcast %deque* %var3 to i8* + %1 = bitcast %iterator* %var1 to i8* + call void @llvm.lifetime.start(i64 16, i8* %1) nounwind + call void @llvm.memcpy.p0i8.p0i8.i32(i8* %1, i8* %0, i32 16, i32 4, i1 false) + call void @llvm.lifetime.end(i64 16, i8* %1) nounwind + + %2 = bitcast %insert_iterator* %var2 to i8* + call void @llvm.lifetime.start(i64 20, i8* %2) nounwind + + ret i32 0 +} + +declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind + +declare void @llvm.lifetime.start(i64, i8* nocapture) nounwind + +declare void @llvm.lifetime.end(i64, i8* nocapture) nounwind -- cgit v1.2.3