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55 lines
1.9 KiB
LLVM
55 lines
1.9 KiB
LLVM
; RUN: llc < %s -march=x86 -stats |& grep {Number of blocks eliminated} | grep 6
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; PR1296
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64"
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target triple = "i686-apple-darwin8"
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define i32 @foo(i32 %A, i32 %B, i32 %C) nounwind {
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entry:
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switch i32 %A, label %out [
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i32 1, label %bb
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i32 0, label %bb13
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i32 2, label %bb35
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]
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bb: ; preds = %cond_next, %entry
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%i.144.1 = phi i32 [ 0, %entry ], [ %tmp7, %cond_next ] ; <i32> [#uses=2]
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%tmp4 = and i32 %i.144.1, %B ; <i32> [#uses=1]
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icmp eq i32 %tmp4, 0 ; <i1>:0 [#uses=1]
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br i1 %0, label %cond_next, label %out
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cond_next: ; preds = %bb
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%tmp7 = add i32 %i.144.1, 1 ; <i32> [#uses=2]
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icmp slt i32 %tmp7, 1000 ; <i1>:1 [#uses=1]
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br i1 %1, label %bb, label %out
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bb13: ; preds = %cond_next18, %entry
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%i.248.1 = phi i32 [ 0, %entry ], [ %tmp20, %cond_next18 ] ; <i32> [#uses=2]
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%tmp16 = and i32 %i.248.1, %C ; <i32> [#uses=1]
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icmp eq i32 %tmp16, 0 ; <i1>:2 [#uses=1]
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br i1 %2, label %cond_next18, label %out
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cond_next18: ; preds = %bb13
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%tmp20 = add i32 %i.248.1, 1 ; <i32> [#uses=2]
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icmp slt i32 %tmp20, 1000 ; <i1>:3 [#uses=1]
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br i1 %3, label %bb13, label %out
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bb27: ; preds = %bb35
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%tmp30 = and i32 %i.3, %C ; <i32> [#uses=1]
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icmp eq i32 %tmp30, 0 ; <i1>:4 [#uses=1]
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br i1 %4, label %cond_next32, label %out
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cond_next32: ; preds = %bb27
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%indvar.next = add i32 %i.3, 1 ; <i32> [#uses=1]
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br label %bb35
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bb35: ; preds = %entry, %cond_next32
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%i.3 = phi i32 [ %indvar.next, %cond_next32 ], [ 0, %entry ] ; <i32> [#uses=3]
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icmp slt i32 %i.3, 1000 ; <i1>:5 [#uses=1]
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br i1 %5, label %bb27, label %out
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out: ; preds = %bb27, %bb35, %bb13, %cond_next18, %bb, %cond_next, %entry
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%result.0 = phi i32 [ 0, %entry ], [ 1, %bb ], [ 0, %cond_next ], [ 1, %bb13 ], [ 0, %cond_next18 ], [ 1, %bb27 ], [ 0, %bb35 ] ; <i32> [#uses=1]
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ret i32 %result.0
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}
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