47 lines
1.4 KiB
LLVM
47 lines
1.4 KiB
LLVM
|
; RUN: opt -hexagon-loop-idiom -loop-deletion -gvn -S < %s
|
||
|
|
; REQUIRES: asserts
|
||
|
|
|
||
|
|
; This tests that the HexagonLoopIdiom pass does not mark LCSSA information
|
||
|
|
; as preserved. The pass calls SimplifyInstruction is a couple of places,
|
||
|
|
; which can invalidate LCSSA. Specifically, the uses of a LCSSA phi variable
|
||
|
|
; are replaced by the incoming value.
|
||
|
|
|
||
|
|
define hidden void @test() local_unnamed_addr #0 {
|
||
|
|
entry:
|
||
|
|
br label %if.then63
|
||
|
|
|
||
|
|
if.then63:
|
||
|
|
br i1 undef, label %do.body311, label %if.end375
|
||
|
|
|
||
|
|
do.body311:
|
||
|
|
br i1 undef, label %do.end318, label %do.body311
|
||
|
|
|
||
|
|
do.end318:
|
||
|
|
br i1 undef, label %if.end322, label %if.end375
|
||
|
|
|
||
|
|
if.end322:
|
||
|
|
%sub325 = sub i32 undef, undef
|
||
|
|
br i1 undef, label %do.end329, label %do.body311
|
||
|
|
|
||
|
|
do.end329:
|
||
|
|
%sub325.lcssa = phi i32 [ %sub325, %if.end322 ]
|
||
|
|
br label %do.body330
|
||
|
|
|
||
|
|
do.body330:
|
||
|
|
%row_width.7 = phi i32 [ %sub325.lcssa, %do.end329 ], [ %dec334, %do.body330 ]
|
||
|
|
%sp.5 = phi i8* [ undef, %do.end329 ], [ %incdec.ptr331, %do.body330 ]
|
||
|
|
%dp.addr.5 = phi i8* [ undef, %do.end329 ], [ %incdec.ptr332, %do.body330 ]
|
||
|
|
%0 = load i8, i8* %sp.5, align 1
|
||
|
|
store i8 %0, i8* %dp.addr.5, align 1
|
||
|
|
%incdec.ptr332 = getelementptr inbounds i8, i8* %dp.addr.5, i32 1
|
||
|
|
%incdec.ptr331 = getelementptr inbounds i8, i8* %sp.5, i32 1
|
||
|
|
%dec334 = add i32 %row_width.7, -1
|
||
|
|
%cmp335 = icmp eq i32 %dec334, 0
|
||
|
|
br i1 %cmp335, label %if.end375, label %do.body330
|
||
|
|
|
||
|
|
if.end375:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
attributes #0 = { nounwind }
|