[LLVMbugs] [Bug 943] Too much spill code generated after loop unrolling

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=943

sabre at nondot.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |minor
             Status|NEW                         |RESOLVED
          Component|Backend: X86                |Common Code Generator Code
           Keywords|                            |code-quality
         OS/Version|MacOS X                     |All
           Platform|Macintosh                   |All
         Resolution|                            |FIXED
   Target Milestone|---                         |1.9



------- Additional Comments From sabre at nondot.org  2006-10-11 21:36 -------
Fixed.  Patch here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20061009/038511.html

The diff of produced code:

--- t.s 2006-10-11 18:57:23.000000000 -0700
+++ t2.s        2006-10-11 19:29:35.000000000 -0700
@@ -22,7 +22,6 @@
        movb 39(%esp), %cl
        movl %eax, %edx
        shll %cl, %edx
-       movb 39(%esp), %cl
        incb %cl
        shll %cl, %eax
        movl %edx, %ecx
@@ -73,7 +72,6 @@
        movb 15(%esp), %cl
        movl %esi, %eax
        shll %cl, %eax
-       movb 15(%esp), %cl
        incb %cl
        shll %cl, %esi
        movl %eax, %ecx


-Chris



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