[LLVMbugs] [Bug 3138] New: jump threading horribly broken

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Thu Nov 27 06:38:59 PST 2008


           Summary: jump threading horribly broken
           Product: new-bugs
           Version: unspecified
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: baldrick at free.fr
                CC: llvmbugs at cs.uiuc.edu

Compiling this:

define i32 @jt() {
        br i1 true, label %bb3, label %bb

bb:             ; preds = %entry

bb3:            ; preds = %entry
        ret i32 0

with opt -jump-threading gives:

define i32 @jt() {

bb3:            ; No predecessors!
        ret i32 0

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