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Diffstat (limited to 'test/CodeGen/ARM/wrong-t2stmia-size-opt.ll')
| -rw-r--r-- | test/CodeGen/ARM/wrong-t2stmia-size-opt.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/wrong-t2stmia-size-opt.ll b/test/CodeGen/ARM/wrong-t2stmia-size-opt.ll new file mode 100644 index 0000000..7ecd252 --- /dev/null +++ b/test/CodeGen/ARM/wrong-t2stmia-size-opt.ll @@ -0,0 +1,20 @@ +; RUN: llc -mcpu=cortex-a9 -O1 -filetype=obj %s -o - | llvm-objdump -arch thumb -mcpu=cortex-a9 -d - | FileCheck %s + +target datalayout = "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:64-v128:64:128-a:0:32-n32-S64" +target triple = "thumbv7--linux-gnueabi" + +declare i8* @llvm.returnaddress(i32) + +define i32* @wrong-t2stmia-size-reduction(i32* %addr, i32 %val0) minsize { + store i32 %val0, i32* %addr + %addr1 = getelementptr i32* %addr, i32 1 + %lr = call i8* @llvm.returnaddress(i32 0) + %lr32 = ptrtoint i8* %lr to i32 + store i32 %lr32, i32* %addr1 + %addr2 = getelementptr i32* %addr1, i32 1 + ret i32* %addr2 +} + +; Check that stm writes two registers. The bug caused one of registers (LR, +; which invalid for Thumb1 form of STMIA instruction) to be dropped. +; CHECK: stm{{[^,]*}}, {{{.*,.*}}} |