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33 lines
841 B
LLVM
33 lines
841 B
LLVM
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; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis
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; PR3399
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@g_53 = external global i32 ; <i32*> [#uses=1]
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define i32 @foo() nounwind {
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bb5.thread:
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br label %bb
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bb: ; preds = %bb5, %bb5.thread
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%indvar = phi i32 [ 0, %bb5.thread ], [ %indvar.next, %bb5 ] ; <i32> [#uses=2]
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br i1 false, label %bb5, label %bb1
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bb1: ; preds = %bb
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%l_2.0.reg2mem.0 = sub i32 0, %indvar ; <i32> [#uses=1]
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%0 = volatile load i32* @g_53, align 4 ; <i32> [#uses=1]
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%1 = trunc i32 %l_2.0.reg2mem.0 to i16 ; <i16> [#uses=1]
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%2 = trunc i32 %0 to i16 ; <i16> [#uses=1]
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%3 = mul i16 %2, %1 ; <i16> [#uses=1]
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%4 = icmp eq i16 %3, 0 ; <i1> [#uses=1]
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br i1 %4, label %bb7, label %bb2
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bb2: ; preds = %bb2, %bb1
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br label %bb2
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bb5: ; preds = %bb
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%indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1]
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br label %bb
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bb7: ; preds = %bb1
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ret i32 1
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}
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