110 lines
3.3 KiB
LLVM
110 lines
3.3 KiB
LLVM
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; RUN: opt -S -loop-rotate -enable-mssa-loop-dependency=true -verify-memoryssa < %s | FileCheck %s
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; CHECK-LABEL: @multiedge(
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define void @multiedge() {
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entry:
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br label %retry
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retry: ; preds = %sw.epilog, %entry
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br i1 undef, label %cleanup, label %if.end
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if.end: ; preds = %retry
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switch i32 undef, label %sw.epilog [
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i32 -3, label %cleanup
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i32 -5, label %cleanup
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i32 -16, label %cleanup
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i32 -25, label %cleanup
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]
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sw.epilog: ; preds = %if.end
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br label %retry
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cleanup: ; preds = %if.end, %if.end, %if.end, %if.end, %retry
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ret void
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}
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; CHECK-LABEL: @read_line(
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define internal fastcc i32 @read_line(i8* nocapture %f) unnamed_addr {
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entry:
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br label %for.cond
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for.cond: ; preds = %if.end, %entry
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%call = call i8* @prepbuffer(i8* nonnull undef)
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%call1 = call i8* @fgets(i8* %call, i32 8192, i8* %f)
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %for.cond
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ret i32 undef
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if.end: ; preds = %for.cond
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%call4 = call i64 @strlen(i8* %call)
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br label %for.cond
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}
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declare dso_local i8* @prepbuffer(i8*) local_unnamed_addr
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declare dso_local i8* @fgets(i8*, i32, i8* nocapture) local_unnamed_addr
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declare dso_local i64 @strlen(i8* nocapture) local_unnamed_addr
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; CHECK-LABEL: @loop3
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define dso_local fastcc void @loop3() unnamed_addr {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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br i1 undef, label %for.body, label %for.end81
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for.body: ; preds = %for.cond
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%.idx122.val = load i32, i32* undef, align 8
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call fastcc void @cont()
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br label %for.cond
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for.end81: ; preds = %for.cond
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ret void
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}
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; CHECK-LABEL: @loop4
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define dso_local fastcc void @loop4() unnamed_addr {
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entry:
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br label %while.cond
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while.cond: ; preds = %while.body, %entry
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br i1 undef, label %while.end, label %while.body
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while.body: ; preds = %while.cond
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call fastcc void @cont()
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br label %while.cond
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while.end: ; preds = %while.cond
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call fastcc void @cont()
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call fastcc void @cont()
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ret void
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}
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; Function Attrs: inlinehint nounwind uwtable
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declare dso_local fastcc void @cont() unnamed_addr
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@glob_array = internal unnamed_addr constant [3 x i32] [i32 1, i32 0, i32 2], align 4
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; Test against failure in MemorySSAUpdater, when rotate clones instructions as Value.
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; CHECK-LABEL: @loop5
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define dso_local fastcc void @loop5() unnamed_addr {
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entry:
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br label %for.body
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do.cond: ; preds = %for.body
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unreachable
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for.body: ; preds = %if.end, %entry
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%indvar = phi i64 [ %indvar.next, %if.end ], [ 0, %entry ]
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%array = getelementptr inbounds [3 x i32], [3 x i32]* @glob_array, i64 0, i64 %indvar
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%0 = load i32, i32* %array, align 4
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br i1 undef, label %do.cond, label %if.end
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if.end: ; preds = %for.body
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store i32 undef, i32* undef, align 4
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%indvar.next = add nuw nsw i64 %indvar, 1
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br label %for.body
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}
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