forked from OSchip/llvm-project
79 lines
1.5 KiB
LLVM
79 lines
1.5 KiB
LLVM
; RUN: opt < %s -passes='print<phi-values>' -disable-output 2>&1 | FileCheck %s
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; This test has a phi with a large number of incoming values that are all the
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; same phi, and that phi depends on this phi. This is to check that phi values
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; analysis doesn't repeatedly add a phis values to itself until it segfaults.
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; CHECK-LABEL: PHI Values for function: fn
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define void @fn(i8* %arg) {
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entry:
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br label %for.body
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for.body:
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; CHECK: PHI %phi1 has values:
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; CHECK-DAG: i8* %arg
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; CHECK-DAG: i8* undef
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%phi1 = phi i8* [ %arg, %entry ], [ %phi2, %end ]
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switch i32 undef, label %end [
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i32 1, label %bb1
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i32 2, label %bb2
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i32 3, label %bb3
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i32 4, label %bb4
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i32 5, label %bb5
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i32 6, label %bb6
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i32 7, label %bb7
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i32 8, label %bb8
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i32 9, label %bb9
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i32 10, label %bb10
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i32 11, label %bb11
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i32 12, label %bb12
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i32 13, label %bb13
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]
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bb1:
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br label %end
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bb2:
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br label %end
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bb3:
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br label %end
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bb4:
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br label %end
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bb5:
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br label %end
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bb6:
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br label %end
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bb7:
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br label %end
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bb8:
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br label %end
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bb9:
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br label %end
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bb10:
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br label %end
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bb11:
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br label %end
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bb12:
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br label %end
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bb13:
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br label %end
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end:
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; CHECK: PHI %phi2 has values:
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; CHECK-DAG: i8* %arg
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; CHECK-DAG: i8* undef
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%phi2 = phi i8* [ %phi1, %for.body ], [ %phi1, %bb1 ], [ %phi1, %bb2 ], [ %phi1, %bb3 ], [ %phi1, %bb4 ], [ %phi1, %bb5 ], [ %phi1, %bb6 ], [ %phi1, %bb7 ], [ undef, %bb8 ], [ %phi1, %bb9 ], [ %phi1, %bb10 ], [ %phi1, %bb11 ], [ %phi1, %bb12 ], [ %phi1, %bb13 ]
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br label %for.body
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}
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