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