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Anton, I'm afraid I really can't produce a meaningful example. The bug is extremely sensitive to code placement, optimization. I had to do a terrible amount of drugdery to find it in the first place. Here's how I found the bug: 1) Stage 1: Compile LLVM with build/host x86, target ARM. 2) Stage 2: Cross-compile LLVM with host ARM, target ARM, using the stage 1 Clang/LLVM. 3) Use the stage 2 LLVM (in an ARM emulator) to compile an application, Foo. 4) Run Foo....

Hello David, > I'm seeing a case where ARM Load/Store optimizer is breaking code. I have > not had any luck trying to come up with a minimal example; it is breaking in > our stage 2 LLVM build. Still, *any* testcase is better than no testcase :) -- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University

Evan & llvmdev, I'm seeing a case where ARM Load/Store optimizer is breaking code. I have not had any luck trying to come up with a minimal example; it is breaking in our stage 2 LLVM build. But here's what I'm seeing in the debug output: # Before ARMLoadStoreOptimizer: BB#21: derived from LLVM BB %cond.end Live Ins: %LR %R0 %R1 %R7 %R10 %R11 Predecessors according to