86 lines
2.6 KiB
LLVM
86 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -passes='loop(indvars,loop-deletion)' -S %s | FileCheck %s
|
|
|
|
; Make sure indvarsimplify properly forgets the exit value %p.2.lcssa phi after
|
|
; modifying it. Loop deletion is required to show the incorrect use of the cached
|
|
; SCEV value.
|
|
|
|
define void @test(i1 %c) {
|
|
; CHECK-LABEL: @test(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[HEADER_1:%.*]]
|
|
; CHECK: header.1.loopexit:
|
|
; CHECK-NEXT: br label [[HEADER_1_BACKEDGE:%.*]]
|
|
; CHECK: header.1:
|
|
; CHECK-NEXT: br label [[HEADER_2:%.*]]
|
|
; CHECK: header.2:
|
|
; CHECK-NEXT: br i1 [[C:%.*]], label [[LATCH_1:%.*]], label [[LATCH_2:%.*]]
|
|
; CHECK: latch.1:
|
|
; CHECK-NEXT: br label [[HEADER_1_LOOPEXIT:%.*]]
|
|
; CHECK: latch.2:
|
|
; CHECK-NEXT: br label [[HEADER_1_BACKEDGE]]
|
|
; CHECK: header.1.backedge:
|
|
; CHECK-NEXT: br label [[HEADER_1]]
|
|
;
|
|
entry:
|
|
br label %header.1
|
|
|
|
header.1:
|
|
%p.1 = phi i32 [ 0, %entry ], [ %p.2.lcssa, %latch.2 ], [ 0, %latch.1 ]
|
|
br label %header.2
|
|
|
|
header.2:
|
|
%p.2 = phi i32 [ %p.1, %header.1 ], [ %p.2.next, %latch.1 ]
|
|
br i1 %c, label %latch.1, label %latch.2
|
|
|
|
latch.1:
|
|
%p.2.next = add i32 %p.2, 1
|
|
br i1 false, label %header.2, label %header.1
|
|
|
|
latch.2:
|
|
%p.2.lcssa = phi i32 [ %p.2, %header.2 ]
|
|
br label %header.1
|
|
}
|
|
|
|
define i8 @test_pr52023(i1 %c.1, i1 %c.2) {
|
|
; CHECK-LABEL: @test_pr52023(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_1:%.*]]
|
|
; CHECK: loop.1:
|
|
; CHECK-NEXT: [[INC79:%.*]] = phi i8 [ [[TMP0:%.*]], [[LOOP_1_LATCH:%.*]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: [[TMP0]] = add i8 [[INC79]], 1
|
|
; CHECK-NEXT: br label [[LOOP_2:%.*]]
|
|
; CHECK: loop.2:
|
|
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[LOOP_2_LATCH:%.*]], label [[LOOP_1_LATCH]]
|
|
; CHECK: loop.2.latch:
|
|
; CHECK-NEXT: br label [[LOOP_1_LATCH]]
|
|
; CHECK: loop.1.latch:
|
|
; CHECK-NEXT: br i1 [[C_2:%.*]], label [[EXIT:%.*]], label [[LOOP_1]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[INC_LCSSA_LCSSA:%.*]] = phi i8 [ [[TMP0]], [[LOOP_1_LATCH]] ]
|
|
; CHECK-NEXT: ret i8 [[INC_LCSSA_LCSSA]]
|
|
;
|
|
entry:
|
|
br label %loop.1
|
|
|
|
loop.1:
|
|
%inc79 = phi i8 [ %inc.lcssa, %loop.1.latch ], [ 0, %entry ]
|
|
br label %loop.2
|
|
|
|
loop.2:
|
|
%inc6 = phi i8 [ %inc79, %loop.1 ], [ %inc, %loop.2.latch ]
|
|
%inc = add i8 %inc6, 1
|
|
br i1 %c.1, label %loop.2.latch , label %loop.1.latch
|
|
|
|
loop.2.latch:
|
|
br i1 false, label %loop.2, label %loop.1.latch
|
|
|
|
loop.1.latch:
|
|
%inc.lcssa = phi i8 [ %inc, %loop.2.latch ], [ undef, %loop.2 ]
|
|
br i1 %c.2, label %exit, label %loop.1
|
|
|
|
exit:
|
|
%inc.lcssa.lcssa = phi i8 [ %inc.lcssa, %loop.1.latch ]
|
|
ret i8 %inc.lcssa.lcssa
|
|
}
|