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2015 Aug 28
7
Clearing the BSS section
...M4 embedded system. The LLVM (version 3.7.0rc3) code I had wrote is : ;------------ target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" target triple = "thumbv7em-none--eabi" @__bss_start = external global i32 @__bss_end = external global i32 define void @clearBSS () nounwind { entry: br label %bssLoopTest bssLoopTest: %p = phi i32* [@__bss_start, %entry], [%p.next, %bssLoop] %completed = icmp eq i32* %p, @__bss_end br i1 %completed, label %clearCompleted, label %bssLoop bssLoop: store i32 0, i32* %p, align 4 %p.next = getelementptr inbounds...