2011-04-05 08:32:44 +08:00
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; RUN: llc < %s -march=x86 -stats -regalloc=linearscan |& grep {Number of loads added} | grep 2
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; RUN: llc < %s -march=x86 -stats -regalloc=linearscan |& grep {Number of register spills} | grep 1
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; RUN: llc < %s -march=x86 -stats -regalloc=linearscan |& grep {Number of machine instrs printed} | grep 34
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2009-02-11 16:24:21 +08:00
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; PR3495
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target triple = "i386-pc-linux-gnu"
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@x = external global [8 x i32], align 32 ; <[8 x i32]*> [#uses=1]
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@rows = external global [8 x i32], align 32 ; <[8 x i32]*> [#uses=2]
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@up = external global [15 x i32], align 32 ; <[15 x i32]*> [#uses=2]
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@down = external global [15 x i32], align 32 ; <[15 x i32]*> [#uses=1]
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define i32 @queens(i32 %c) nounwind {
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entry:
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%tmp91 = add i32 %c, 1 ; <i32> [#uses=3]
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%tmp135 = getelementptr [8 x i32]* @x, i32 0, i32 %tmp91 ; <i32*> [#uses=1]
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br label %bb
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bb: ; preds = %bb569, %entry
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%r25.0.reg2mem.0 = phi i32 [ 0, %entry ], [ %indvar.next715, %bb569 ] ; <i32> [#uses=4]
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%tmp27 = getelementptr [8 x i32]* @rows, i32 0, i32 %r25.0.reg2mem.0 ; <i32*> [#uses=1]
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%tmp28 = load i32* %tmp27, align 4 ; <i32> [#uses=1]
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%tmp29 = icmp eq i32 %tmp28, 0 ; <i1> [#uses=1]
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br i1 %tmp29, label %bb569, label %bb31
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bb31: ; preds = %bb
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%tmp35 = sub i32 %r25.0.reg2mem.0, 0 ; <i32> [#uses=1]
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%tmp36 = getelementptr [15 x i32]* @up, i32 0, i32 %tmp35 ; <i32*> [#uses=1]
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%tmp37 = load i32* %tmp36, align 4 ; <i32> [#uses=1]
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%tmp38 = icmp eq i32 %tmp37, 0 ; <i1> [#uses=1]
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br i1 %tmp38, label %bb569, label %bb41
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bb41: ; preds = %bb31
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%tmp54 = sub i32 %r25.0.reg2mem.0, %c ; <i32> [#uses=1]
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%tmp55 = add i32 %tmp54, 7 ; <i32> [#uses=1]
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%tmp62 = getelementptr [15 x i32]* @up, i32 0, i32 %tmp55 ; <i32*> [#uses=2]
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store i32 0, i32* %tmp62, align 4
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br label %bb92
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bb92: ; preds = %bb545, %bb41
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%r20.0.reg2mem.0 = phi i32 [ 0, %bb41 ], [ %indvar.next711, %bb545 ] ; <i32> [#uses=5]
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%tmp94 = getelementptr [8 x i32]* @rows, i32 0, i32 %r20.0.reg2mem.0 ; <i32*> [#uses=1]
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%tmp95 = load i32* %tmp94, align 4 ; <i32> [#uses=0]
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%tmp112 = add i32 %r20.0.reg2mem.0, %tmp91 ; <i32> [#uses=1]
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%tmp113 = getelementptr [15 x i32]* @down, i32 0, i32 %tmp112 ; <i32*> [#uses=2]
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%tmp114 = load i32* %tmp113, align 4 ; <i32> [#uses=1]
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%tmp115 = icmp eq i32 %tmp114, 0 ; <i1> [#uses=1]
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br i1 %tmp115, label %bb545, label %bb118
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bb118: ; preds = %bb92
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%tmp122 = sub i32 %r20.0.reg2mem.0, %tmp91 ; <i32> [#uses=0]
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store i32 0, i32* %tmp113, align 4
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store i32 %r20.0.reg2mem.0, i32* %tmp135, align 4
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br label %bb142
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bb142: ; preds = %bb142, %bb118
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%k18.0.reg2mem.0 = phi i32 [ 0, %bb118 ], [ %indvar.next709, %bb142 ] ; <i32> [#uses=1]
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%indvar.next709 = add i32 %k18.0.reg2mem.0, 1 ; <i32> [#uses=2]
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%exitcond710 = icmp eq i32 %indvar.next709, 8 ; <i1> [#uses=1]
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br i1 %exitcond710, label %bb155, label %bb142
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bb155: ; preds = %bb142
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%tmp156 = tail call i32 @putchar(i32 10) nounwind ; <i32> [#uses=0]
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br label %bb545
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bb545: ; preds = %bb155, %bb92
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%indvar.next711 = add i32 %r20.0.reg2mem.0, 1 ; <i32> [#uses=2]
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%exitcond712 = icmp eq i32 %indvar.next711, 8 ; <i1> [#uses=1]
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br i1 %exitcond712, label %bb553, label %bb92
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bb553: ; preds = %bb545
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store i32 1, i32* %tmp62, align 4
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br label %bb569
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bb569: ; preds = %bb553, %bb31, %bb
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%indvar.next715 = add i32 %r25.0.reg2mem.0, 1 ; <i32> [#uses=1]
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br label %bb
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}
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declare i32 @putchar(i32)
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