72 lines
2.7 KiB
LLVM
72 lines
2.7 KiB
LLVM
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||
|
|
; RUN: opt -loop-reduce -loop-unroll -unroll-runtime -verify-scev -verify-loop-lcssa < %s -S | FileCheck %s
|
||
|
|
|
||
|
|
; Test case for PR43458. We check that we do properly invalidate LCSSA phi
|
||
|
|
; users in SCEV. Run -loop-reduce first, so SCEV is already populated.
|
||
|
|
|
||
|
|
define void @spam() {
|
||
|
|
; CHECK-LABEL: @spam(
|
||
|
|
; CHECK-NEXT: bb:
|
||
|
|
; CHECK-NEXT: br label [[BB3:%.*]]
|
||
|
|
; CHECK: bb3:
|
||
|
|
; CHECK-NEXT: br i1 false, label [[BB9:%.*]], label [[BB5_PREHEADER:%.*]]
|
||
|
|
; CHECK: bb5.preheader:
|
||
|
|
; CHECK-NEXT: br label [[BB5:%.*]]
|
||
|
|
; CHECK: bb5:
|
||
|
|
; CHECK-NEXT: br label [[BB9]]
|
||
|
|
; CHECK: bb9:
|
||
|
|
; CHECK-NEXT: [[TMP10:%.*]] = phi i64 [ 0, [[BB3]] ], [ 5, [[BB5]] ]
|
||
|
|
; CHECK-NEXT: [[TMP11:%.*]] = trunc i64 [[TMP10]] to i32
|
||
|
|
; CHECK-NEXT: [[TMP21:%.*]] = sext i32 [[TMP11]] to i64
|
||
|
|
; CHECK-NEXT: [[TMP22:%.*]] = icmp slt i64 0, [[TMP21]]
|
||
|
|
; CHECK-NEXT: br i1 [[TMP22]], label [[BB24_PREHEADER:%.*]], label [[BB29:%.*]]
|
||
|
|
; CHECK: bb24.preheader:
|
||
|
|
; CHECK-NEXT: br label [[BB24:%.*]]
|
||
|
|
; CHECK: bb24:
|
||
|
|
; CHECK-NEXT: [[TMP25:%.*]] = phi i64 [ [[TMP26:%.*]], [[BB24]] ], [ 0, [[BB24_PREHEADER]] ]
|
||
|
|
; CHECK-NEXT: [[TMP26]] = add nuw nsw i64 [[TMP25]], 1
|
||
|
|
; CHECK-NEXT: [[TMP27:%.*]] = icmp slt i64 [[TMP26]], [[TMP21]]
|
||
|
|
; CHECK-NEXT: br i1 [[TMP27]], label [[BB24]], label [[BB29_LOOPEXIT:%.*]]
|
||
|
|
; CHECK: bb29.loopexit:
|
||
|
|
; CHECK-NEXT: br label [[BB29]]
|
||
|
|
; CHECK: bb29:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
;
|
||
|
|
bb:
|
||
|
|
br label %bb3
|
||
|
|
|
||
|
|
bb3: ; preds = %bb9, %bb
|
||
|
|
%pv1 = phi i64 [ 0, %bb ], [ %iv1, %bb9]
|
||
|
|
%c1 = icmp eq i64 %pv1, 5
|
||
|
|
br i1 %c1, label %bb9, label %bb5
|
||
|
|
|
||
|
|
bb5: ; preds = %bb5, %bb3
|
||
|
|
%pv = phi i64 [ 0, %bb3], [ %tmp6, %bb5]
|
||
|
|
%tmp6 = add nsw i64 %pv, 1
|
||
|
|
%cond = icmp eq i64 %tmp6, 5
|
||
|
|
br i1 %cond, label %bb8, label %bb5
|
||
|
|
|
||
|
|
bb8: ; preds = %bb5
|
||
|
|
br label %bb9
|
||
|
|
|
||
|
|
bb9: ; preds = %bb8, %bb3
|
||
|
|
%tmp10 = phi i64 [ 0, %bb3 ], [ %tmp6, %bb8 ]
|
||
|
|
%tmp11 = trunc i64 %tmp10 to i32
|
||
|
|
%iv1 = add nsw i64 %pv1, 1
|
||
|
|
br i1 false, label %bb3, label %bb20
|
||
|
|
|
||
|
|
bb20: ; preds = %bb9
|
||
|
|
%tmp21 = sext i32 %tmp11 to i64
|
||
|
|
%tmp22 = icmp slt i64 0, %tmp21
|
||
|
|
br i1 %tmp22, label %bb24, label %bb29
|
||
|
|
|
||
|
|
bb24: ; preds = %bb24, %bb20
|
||
|
|
%tmp25 = phi i64 [ %tmp26, %bb24 ], [ 0, %bb20 ]
|
||
|
|
%tmp26 = add nuw nsw i64 %tmp25, 1
|
||
|
|
%tmp27 = icmp slt i64 %tmp26, %tmp21
|
||
|
|
br i1 %tmp27, label %bb24, label %bb29
|
||
|
|
|
||
|
|
bb29: ; preds = %bb24, %bb20
|
||
|
|
ret void
|
||
|
|
}
|