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3831005eb1
This fixes many bugs. I will add more test cases in a separate check-in. Some day, the code that manipulates CFG and updates dom. info could use refactoring help. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60554 91177308-0d34-0410-b5e6-96231b3b80d8
67 lines
2.2 KiB
LLVM
67 lines
2.2 KiB
LLVM
; RUN: llvm-as < %s | opt -loop-index-split -stats -disable-output |& grep "1 loop-index-split"
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; PR 2869
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@w = external global [2 x [2 x i32]] ; <[2 x [2 x i32]]*> [#uses=5]
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declare i32 @f() nounwind
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define i32 @main() noreturn nounwind {
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entry:
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br label %bb1.i.outer
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bb1.i.outer: ; preds = %bb5.i, %entry
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%i.0.reg2mem.0.ph.i.ph = phi i32 [ 0, %entry ], [ %indvar.next1, %bb5.i ] ; <i32> [#uses=3]
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br label %bb1.i
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bb1.i: ; preds = %bb3.i, %bb1.i.outer
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%j.0.reg2mem.0.i = phi i32 [ 0, %bb1.i.outer ], [ %indvar.next, %bb3.i ] ; <i32> [#uses=3]
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%0 = icmp eq i32 %i.0.reg2mem.0.ph.i.ph, %j.0.reg2mem.0.i ; <i1> [#uses=1]
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br i1 %0, label %bb2.i, label %bb3.i
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bb2.i: ; preds = %bb1.i
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%1 = getelementptr [2 x [2 x i32]]* @w, i32 0, i32 %i.0.reg2mem.0.ph.i.ph, i32 %j.0.reg2mem.0.i ; <i32*> [#uses=1]
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store i32 1, i32* %1, align 4
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br label %bb3.i
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bb3.i: ; preds = %bb2.i, %bb1.i
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%indvar.next = add i32 %j.0.reg2mem.0.i, 1 ; <i32> [#uses=2]
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%exitcond = icmp eq i32 %indvar.next, 2 ; <i1> [#uses=1]
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br i1 %exitcond, label %bb5.i, label %bb1.i
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bb5.i: ; preds = %bb3.i
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%indvar.next1 = add i32 %i.0.reg2mem.0.ph.i.ph, 1 ; <i32> [#uses=2]
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%exitcond2 = icmp eq i32 %indvar.next1, 2 ; <i1> [#uses=1]
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br i1 %exitcond2, label %f.exit, label %bb1.i.outer
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f.exit: ; preds = %bb5.i
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%2 = load i32* getelementptr ([2 x [2 x i32]]* @w, i32 0, i32 0, i32 0), align 4 ; <i32> [#uses=1]
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%3 = icmp eq i32 %2, 1 ; <i1> [#uses=1]
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br i1 %3, label %bb, label %bb3
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bb: ; preds = %f.exit
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%4 = load i32* getelementptr ([2 x [2 x i32]]* @w, i32 0, i32 1, i32 1), align 4 ; <i32> [#uses=1]
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%5 = icmp eq i32 %4, 1 ; <i1> [#uses=1]
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br i1 %5, label %bb1, label %bb3
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bb1: ; preds = %bb
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%6 = load i32* getelementptr ([2 x [2 x i32]]* @w, i32 0, i32 1, i32 0), align 4 ; <i32> [#uses=1]
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%7 = icmp eq i32 %6, 0 ; <i1> [#uses=1]
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br i1 %7, label %bb2, label %bb3
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bb2: ; preds = %bb1
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%8 = load i32* getelementptr ([2 x [2 x i32]]* @w, i32 0, i32 0, i32 1), align 4 ; <i32> [#uses=1]
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%9 = icmp eq i32 %8, 0 ; <i1> [#uses=1]
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br i1 %9, label %bb4, label %bb3
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bb3: ; preds = %bb2, %bb1, %bb, %f.exit
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tail call void @abort() noreturn nounwind
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unreachable
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bb4: ; preds = %bb2
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ret i32 0
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}
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declare void @abort() noreturn nounwind
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declare void @exit(i32) noreturn nounwind
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