[LLVMbugs] [Bug 2262] volatile load should not be moved inside loop

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2262


Chris Lattner <sabre at nondot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
           Keywords|                            |miscompilation
         Resolution|                            |FIXED




--- Comment #6 from Chris Lattner <sabre at nondot.org>  2008-04-29 12:29:52 ---
Second fix here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20080428/061771.html

We now get:

_main:
        subl    $12, %esp
        xorl    %eax, %eax
        movl    _g_1, %ecx
        .align  4,0x90
LBB3_1: ## bb
        addl    $5, %ecx
        movl    %ecx, _g_1
        incl    %eax
        cmpl    $10, %eax
        movl    _g_1, %ecx
        jne     LBB3_1  ## bb
LBB3_2: ## bb11
        movl    $_.str, (%esp)
        call    _puts
        xorl    %eax, %eax
        addl    $12, %esp
        ret

with llvm-gcc -Os -S t.c -Wall -o - -static -fomit-frame-pointer, which I
believe to be right.

Thanks!


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