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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
declare void @use(i1)
define void @loop_iv_cond_variable_bound(i32 %n) {
; CHECK-LABEL: @loop_iv_cond_variable_bound(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[T_1:%.*]] = icmp ule i32 [[IV]], [[N:%.*]]
; CHECK-NEXT: call void @use(i1 [[T_1]])
; CHECK-NEXT: [[T_2:%.*]] = icmp sge i32 [[IV]], 0
; CHECK-NEXT: call void @use(i1 [[T_2]])
; CHECK-NEXT: [[T_3:%.*]] = icmp sge i32 [[IV]], -1
; CHECK-NEXT: call void @use(i1 [[T_3]])
; CHECK-NEXT: [[C_1:%.*]] = icmp ult i32 [[IV]], [[N]]
; CHECK-NEXT: call void @use(i1 [[C_1]])
; CHECK-NEXT: [[C_2:%.*]] = icmp ugt i32 [[IV]], 1
; CHECK-NEXT: call void @use(i1 [[C_2]])
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[IV]], [[N]]
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
%t.1 = icmp ule i32 %iv, %n
call void @use(i1 %t.1)
%t.2 = icmp sge i32 %iv, 0
call void @use(i1 %t.2)
%t.3 = icmp sge i32 %iv, -1
call void @use(i1 %t.3)
%c.1 = icmp ult i32 %iv, %n
call void @use(i1 %c.1)
%c.2 = icmp ugt i32 %iv, 1
call void @use(i1 %c.2)
%cmp = icmp ult i32 %iv, %n
%iv.next = add nuw nsw i32 %iv, 1
br i1 %cmp, label %loop, label %exit
exit:
ret void
}
define void @loop_iv_cond_constant_bound() {
; CHECK-LABEL: @loop_iv_cond_constant_bound(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[T_1:%.*]] = icmp ule i32 [[IV]], 2
; CHECK-NEXT: call void @use(i1 [[T_1]])
; CHECK-NEXT: [[T_2:%.*]] = icmp sge i32 [[IV]], 0
; CHECK-NEXT: call void @use(i1 [[T_2]])
; CHECK-NEXT: [[T_3:%.*]] = icmp sge i32 [[IV]], -1
; CHECK-NEXT: call void @use(i1 [[T_3]])
; CHECK-NEXT: [[C_1:%.*]] = icmp ult i32 [[IV]], 2
; CHECK-NEXT: call void @use(i1 [[C_1]])
; CHECK-NEXT: [[C_2:%.*]] = icmp ugt i32 [[IV]], 1
; CHECK-NEXT: call void @use(i1 [[C_2]])
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[IV]], 2
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
%t.1 = icmp ule i32 %iv, 2
call void @use(i1 %t.1)
%t.2 = icmp sge i32 %iv, 0
call void @use(i1 %t.2)
%t.3 = icmp sge i32 %iv, -1
call void @use(i1 %t.3)
%c.1 = icmp ult i32 %iv, 2
call void @use(i1 %c.1)
%c.2 = icmp ugt i32 %iv, 1
call void @use(i1 %c.2)
%cmp = icmp ult i32 %iv, 2
%iv.next = add nuw nsw i32 %iv, 1
br i1 %cmp, label %loop, label %exit
exit:
ret void
}
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