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Diffstat (limited to 'test/Transforms/SimplifyCFG')
-rw-r--r-- | test/Transforms/SimplifyCFG/CoveredLookupTable.ll | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/CoveredLookupTable.ll b/test/Transforms/SimplifyCFG/CoveredLookupTable.ll new file mode 100644 index 0000000..8b45a59 --- /dev/null +++ b/test/Transforms/SimplifyCFG/CoveredLookupTable.ll @@ -0,0 +1,48 @@ +; RUN: opt -simplifycfg -S %s | FileCheck %s +; rdar://15268442 + +target datalayout = "e-p:64:64:64-S128-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f16:16:16-f32:32:32-f64:64:64-f128:128:128-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" +target triple = "x86_64-apple-darwin12.0.0" + +; CHECK-LABEL: define i3 @coveredswitch_test( +; CHECK: entry: +; CHECK-NEXT: sub i3 %input, -4 +; CHECK-NEXT: zext i3 %switch.tableidx to i24 +; CHECK-NEXT: mul i24 %switch.cast, 3 +; CHECK-NEXT: lshr i24 7507338, %switch.shiftamt +; CHECK-NEXT: trunc i24 %switch.downshift to i3 +; CHECK-NEXT: ret i3 %switch.masked + +define i3 @coveredswitch_test(i3 %input) { +entry: + switch i3 %input, label %bb8 [ + i3 0, label %bb7 + i3 1, label %bb + i3 2, label %bb3 + i3 3, label %bb4 + i3 4, label %bb5 + i3 5, label %bb6 + ] + +bb: ; preds = %entry + br label %bb8 + +bb3: ; preds = %entry + br label %bb8 + +bb4: ; preds = %entry + br label %bb8 + +bb5: ; preds = %entry + br label %bb8 + +bb6: ; preds = %entry + br label %bb8 + +bb7: ; preds = %entry + br label %bb8 + +bb8: ; preds = %bb7, %bb6, %bb5, %bb4, %bb3, %bb, %entry + %result = phi i3 [ 0, %bb7 ], [ 1, %bb6 ], [ 2, %bb5 ], [ 3, %bb4 ], [ 4, %bb3 ], [ 5, %bb ], [ 6, %entry ] + ret i3 %result +} |