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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188971 91177308-0d34-0410-b5e6-96231b3b80d8
44 lines
1.1 KiB
LLVM
44 lines
1.1 KiB
LLVM
; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
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; PR3275
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; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'func_15'
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; CHECK-NOT: /u -1
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@g_16 = external global i16 ; <i16*> [#uses=3]
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@.str = external constant [4 x i8] ; <[4 x i8]*> [#uses=0]
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define void @func_15() nounwind {
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entry:
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%0 = load i16* @g_16, align 2 ; <i16> [#uses=1]
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%1 = icmp sgt i16 %0, 0 ; <i1> [#uses=1]
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br i1 %1, label %bb2, label %bb.nph
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bb.nph: ; preds = %entry
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%g_16.promoted = load i16* @g_16 ; <i16> [#uses=1]
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br label %bb
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bb: ; preds = %bb1, %bb.nph
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%g_16.tmp.0 = phi i16 [ %g_16.promoted, %bb.nph ], [ %2, %bb1 ] ; <i16> [#uses=1]
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%2 = add i16 %g_16.tmp.0, -1 ; <i16> [#uses=3]
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br label %bb1
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bb1: ; preds = %bb
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%3 = icmp sgt i16 %2, 0 ; <i1> [#uses=1]
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br i1 %3, label %bb1.bb2_crit_edge, label %bb
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bb1.bb2_crit_edge: ; preds = %bb1
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store i16 %2, i16* @g_16
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br label %bb2
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bb2: ; preds = %bb1.bb2_crit_edge, %entry
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br label %return
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return: ; preds = %bb2
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ret void
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}
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declare i32 @main() nounwind
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declare i32 @printf(i8*, ...) nounwind
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