mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-14 11:32:34 +00:00
a58a04921d
it may be used in contexts where preheader insertion may have failed due to an indirectbr. Make LoopSimplify's LoopSimplify::SeparateNestedLoop properly fail in the case that it would require splitting an indirectbr edge. These fix PR5502. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89484 91177308-0d34-0410-b5e6-96231b3b80d8
101 lines
1.6 KiB
LLVM
101 lines
1.6 KiB
LLVM
; RUN: opt < %s -loopsimplify -lcssa -verify-loop-info -verify-dom-info -S \
|
|
; RUN: | grep -F {indirectbr i8* %x, \[label %L0, label %L1\]} \
|
|
; RUN: | count 6
|
|
|
|
; LoopSimplify should not try to transform loops when indirectbr is involved.
|
|
|
|
define void @entry(i8* %x) {
|
|
entry:
|
|
indirectbr i8* %x, [ label %L0, label %L1 ]
|
|
|
|
L0:
|
|
br label %L0
|
|
|
|
L1:
|
|
ret void
|
|
}
|
|
|
|
define void @backedge(i8* %x) {
|
|
entry:
|
|
br label %L0
|
|
|
|
L0:
|
|
br label %L1
|
|
|
|
L1:
|
|
indirectbr i8* %x, [ label %L0, label %L1 ]
|
|
}
|
|
|
|
define i64 @exit(i8* %x) {
|
|
entry:
|
|
br label %L2
|
|
|
|
L2:
|
|
%z = bitcast i64 0 to i64
|
|
indirectbr i8* %x, [ label %L0, label %L1 ]
|
|
|
|
L0:
|
|
br label %L2
|
|
|
|
L1:
|
|
ret i64 %z
|
|
}
|
|
|
|
define i64 @criticalexit(i8* %x, i1 %a) {
|
|
entry:
|
|
br i1 %a, label %L1, label %L2
|
|
|
|
L2:
|
|
%z = bitcast i64 0 to i64
|
|
indirectbr i8* %x, [ label %L0, label %L1 ]
|
|
|
|
L0:
|
|
br label %L2
|
|
|
|
L1:
|
|
%y = phi i64 [ %z, %L2 ], [ 1, %entry ]
|
|
ret i64 %y
|
|
}
|
|
|
|
define i64 @exit_backedge(i8* %x) {
|
|
entry:
|
|
br label %L0
|
|
|
|
L0:
|
|
%z = bitcast i64 0 to i64
|
|
indirectbr i8* %x, [ label %L0, label %L1 ]
|
|
|
|
L1:
|
|
ret i64 %z
|
|
}
|
|
|
|
define i64 @criticalexit_backedge(i8* %x, i1 %a) {
|
|
entry:
|
|
br i1 %a, label %L0, label %L1
|
|
|
|
L0:
|
|
%z = bitcast i64 0 to i64
|
|
indirectbr i8* %x, [ label %L0, label %L1 ]
|
|
|
|
L1:
|
|
%y = phi i64 [ %z, %L0 ], [ 1, %entry ]
|
|
ret i64 %y
|
|
}
|
|
|
|
define void @pr5502() nounwind {
|
|
entry:
|
|
br label %while.cond
|
|
|
|
while.cond:
|
|
br i1 undef, label %while.body, label %while.end
|
|
|
|
while.body:
|
|
indirectbr i8* undef, [label %end_opcode, label %end_opcode]
|
|
|
|
end_opcode:
|
|
br i1 false, label %end_opcode, label %while.cond
|
|
|
|
while.end:
|
|
ret void
|
|
}
|