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6ebfd72f37
it inserted rather than using LoopInfo::getCanonicalInductionVariable to rediscover it, since that doesn't work on non-canonical loops. This fixes infinite recurrsion on such loops; PR7562. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109419 91177308-0d34-0410-b5e6-96231b3b80d8
56 lines
2.1 KiB
LLVM
56 lines
2.1 KiB
LLVM
; RUN: opt -indvars %s -disable-output
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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declare i32 @putchar(i8) nounwind
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define void @t2(i1* %P) nounwind {
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; <label>:0
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br label %1
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; <label>:1 ; preds = %1, %0
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%2 = phi double [ 9.000000e+00, %0 ], [ %4, %1 ] ; <double> [#uses=1]
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%3 = tail call i32 @putchar(i8 72) ; <i32> [#uses=0]
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%4 = fadd double %2, -1.000000e+00 ; <double> [#uses=2]
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%5 = fcmp ult double %4, 0.000000e+00 ; <i1> [#uses=1]
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store i1 %5, i1* %P
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br i1 %5, label %6, label %1
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; <label>:6 ; preds = %1
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ret void
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}
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; PR7562
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define void @fannkuch() nounwind {
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entry: ; preds = %entry
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br label %bb12
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bb12: ; preds = %bb29, %entry
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%i.1 = phi i32 [ undef, %entry ], [ %i.0, %bb29 ] ; <i32> [#uses=2]
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%r.1 = phi i32 [ undef, %entry ], [ %r.0, %bb29 ] ; <i32> [#uses=2]
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br i1 undef, label %bb13, label %bb24
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bb13: ; preds = %bb12
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br label %bb24
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bb24: ; preds = %bb30, %bb13, %bb12
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%i.2 = phi i32 [ %i.1, %bb13 ], [ %i.0, %bb30 ], [ %i.1, %bb12 ] ; <i32> [#uses=1]
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%r.0 = phi i32 [ %r.1, %bb13 ], [ %2, %bb30 ], [ %r.1, %bb12 ] ; <i32> [#uses=3]
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br label %bb28
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bb27: ; preds = %bb28
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%0 = add nsw i32 %i.0, 1 ; <i32> [#uses=1]
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br label %bb28
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bb28: ; preds = %bb27, %bb26
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%i.0 = phi i32 [ %i.2, %bb24 ], [ %0, %bb27 ] ; <i32> [#uses=4]
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%1 = icmp slt i32 %i.0, %r.0 ; <i1> [#uses=1]
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br i1 %1, label %bb27, label %bb29
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bb29: ; preds = %bb28
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br i1 undef, label %bb12, label %bb30
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bb30: ; preds = %bb29
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%2 = add nsw i32 %r.0, 1 ; <i32> [#uses=1]
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br label %bb24
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}
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