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26e4b216c0
implementing folding. Fixes PR2857. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57049 91177308-0d34-0410-b5e6-96231b3b80d8
33 lines
946 B
LLVM
33 lines
946 B
LLVM
; RUN: llvm-as < %s | opt -indvars
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; PR2857
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@foo = external global i32 ; <i32*> [#uses=1]
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define void @test(i32 %n, i32 %arg) {
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entry:
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br i1 false, label %bb.nph, label %return
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bb.nph: ; preds = %entry
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%0 = load i32* @foo, align 4 ; <i32> [#uses=1]
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%1 = sext i32 %0 to i64 ; <i64> [#uses=1]
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br label %bb
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bb: ; preds = %bb, %bb.nph
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%.in = phi i32 [ %2, %bb ], [ %n, %bb.nph ] ; <i32> [#uses=1]
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%val.02 = phi i64 [ %5, %bb ], [ 0, %bb.nph ] ; <i64> [#uses=2]
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%result.01 = phi i64 [ %4, %bb ], [ 0, %bb.nph ] ; <i64> [#uses=1]
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%2 = add i32 %.in, -1 ; <i32> [#uses=2]
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%3 = mul i64 %1, %val.02 ; <i64> [#uses=1]
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%4 = add i64 %3, %result.01 ; <i64> [#uses=2]
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%5 = add i64 %val.02, 1 ; <i64> [#uses=1]
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%6 = icmp sgt i32 %2, 0 ; <i1> [#uses=1]
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br i1 %6, label %bb, label %bb3.bb4_crit_edge
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bb3.bb4_crit_edge: ; preds = %bb
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%.lcssa = phi i64 [ %4, %bb ] ; <i64> [#uses=0]
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ret void
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return: ; preds = %entry
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ret void
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}
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