474 lines
15 KiB
LLVM
474 lines
15 KiB
LLVM
; 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 @iv_known_non_negative_constant_trip_count() {
|
|
; CHECK-LABEL: @iv_known_non_negative_constant_trip_count(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[IV]], 2
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT_1:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit.1:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%cmp = icmp slt i8 %iv, 2
|
|
br i1 %cmp, label %loop.latch, label %exit.1
|
|
|
|
loop.latch:
|
|
%t.1 = icmp ugt i8 2, %iv
|
|
call void @use(i1 %t.1)
|
|
%t.2 = icmp sgt i8 2, %iv
|
|
call void @use(i1 %t.2)
|
|
%f.1 = icmp ule i8 2, %iv
|
|
call void @use(i1 %f.1)
|
|
%f.2 = icmp sle i8 2, %iv
|
|
call void @use(i1 %f.2)
|
|
%c.0 = icmp ugt i8 %iv, 2
|
|
call void @use(i1 %c.0)
|
|
%iv.next = add nuw nsw i8 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit.1:
|
|
ret void
|
|
}
|
|
|
|
define void @iv_known_non_negative_constant_trip_count_no_nsw_flag(i8 %N) {
|
|
; CHECK-LABEL: @iv_known_non_negative_constant_trip_count_no_nsw_flag(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[IV]], 2
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT_1:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[T_1:%.*]] = icmp ugt i8 [[N:%.*]], [[IV]]
|
|
; CHECK-NEXT: call void @use(i1 [[T_1]])
|
|
; CHECK-NEXT: [[T_2:%.*]] = icmp sgt i8 [[N]], [[IV]]
|
|
; CHECK-NEXT: call void @use(i1 [[T_2]])
|
|
; CHECK-NEXT: [[F_1:%.*]] = icmp ule i8 [[N]], [[IV]]
|
|
; CHECK-NEXT: call void @use(i1 [[F_1]])
|
|
; CHECK-NEXT: [[F_2:%.*]] = icmp sle i8 [[N]], [[IV]]
|
|
; CHECK-NEXT: call void @use(i1 [[F_2]])
|
|
; CHECK-NEXT: [[C_0:%.*]] = icmp ugt i8 [[IV]], 2
|
|
; CHECK-NEXT: call void @use(i1 [[C_0]])
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw i8 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit.1:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%cmp = icmp slt i8 %iv, 2
|
|
br i1 %cmp, label %loop.latch, label %exit.1
|
|
|
|
loop.latch:
|
|
%t.1 = icmp ugt i8 %N, %iv
|
|
call void @use(i1 %t.1)
|
|
%t.2 = icmp sgt i8 %N, %iv
|
|
call void @use(i1 %t.2)
|
|
%f.1 = icmp ule i8 %N, %iv
|
|
call void @use(i1 %f.1)
|
|
%f.2 = icmp sle i8 %N, %iv
|
|
call void @use(i1 %f.2)
|
|
%c.0 = icmp ugt i8 %iv, 2
|
|
call void @use(i1 %c.0)
|
|
%iv.next = add nuw i8 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit.1:
|
|
ret void
|
|
}
|
|
|
|
define void @iv_known_non_negative_variable_trip_count(i8 %N) {
|
|
; CHECK-LABEL: @iv_known_non_negative_variable_trip_count(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[IV]], [[N:%.*]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT_1:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: [[C_0:%.*]] = icmp ugt i8 [[IV]], 2
|
|
; CHECK-NEXT: call void @use(i1 [[C_0]])
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit.1:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%cmp = icmp slt i8 %iv, %N
|
|
br i1 %cmp, label %loop.latch, label %exit.1
|
|
|
|
loop.latch:
|
|
%t.1 = icmp ugt i8 %N, %iv
|
|
call void @use(i1 %t.1)
|
|
%t.2 = icmp sgt i8 %N, %iv
|
|
call void @use(i1 %t.2)
|
|
%f.1 = icmp ule i8 %N, %iv
|
|
call void @use(i1 %f.1)
|
|
%f.2 = icmp sle i8 %N, %iv
|
|
call void @use(i1 %f.2)
|
|
%c.0 = icmp ugt i8 %iv, 2
|
|
call void @use(i1 %c.0)
|
|
%iv.next = add nuw nsw i8 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit.1:
|
|
ret void
|
|
}
|
|
|
|
define void @iv_may_signed_wrap_variable_trip_count(i8 %N) {
|
|
; CHECK-LABEL: @iv_may_signed_wrap_variable_trip_count(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[IV]], [[N:%.*]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT_1:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[T_1:%.*]] = icmp ugt i8 [[N]], [[IV]]
|
|
; CHECK-NEXT: call void @use(i1 [[T_1]])
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: [[F_1:%.*]] = icmp ule i8 [[N]], [[IV]]
|
|
; CHECK-NEXT: call void @use(i1 [[F_1]])
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: [[C_0:%.*]] = icmp ugt i8 [[IV]], 2
|
|
; CHECK-NEXT: call void @use(i1 [[C_0]])
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw i8 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit.1:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%cmp = icmp slt i8 %iv, %N
|
|
br i1 %cmp, label %loop.latch, label %exit.1
|
|
|
|
loop.latch:
|
|
%t.1 = icmp ugt i8 %N, %iv
|
|
call void @use(i1 %t.1)
|
|
%t.2 = icmp sgt i8 %N, %iv
|
|
call void @use(i1 %t.2)
|
|
%f.1 = icmp ule i8 %N, %iv
|
|
call void @use(i1 %f.1)
|
|
%f.2 = icmp sle i8 %N, %iv
|
|
call void @use(i1 %f.2)
|
|
%c.0 = icmp ugt i8 %iv, 2
|
|
call void @use(i1 %c.0)
|
|
%iv.next = add nuw i8 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit.1:
|
|
ret void
|
|
}
|
|
|
|
define void @iv_known_non_negative_iv_constant_trip_count_sgt() {
|
|
; CHECK-LABEL: @iv_known_non_negative_iv_constant_trip_count_sgt(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 2, [[IV]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT_1:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit.1:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%cmp = icmp sgt i8 2, %iv
|
|
br i1 %cmp, label %loop.latch, label %exit.1
|
|
|
|
loop.latch:
|
|
%t.1 = icmp ugt i8 %iv, 2
|
|
call void @use(i1 %t.1)
|
|
%t.2 = icmp sgt i8 2, %iv
|
|
call void @use(i1 %t.2)
|
|
%f.1 = icmp ule i8 2, %iv
|
|
call void @use(i1 %f.1)
|
|
%f.2 = icmp sle i8 2, %iv
|
|
call void @use(i1 %f.2)
|
|
%c.0 = icmp ugt i8 %iv, 2
|
|
call void @use(i1 %c.0)
|
|
%iv.next = add nsw nuw i8 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit.1:
|
|
ret void
|
|
}
|
|
|
|
define void @iv_known_non_negative_iv_variable_trip_count_sgt(i8 %N) {
|
|
; CHECK-LABEL: @iv_known_non_negative_iv_variable_trip_count_sgt(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[N:%.*]], [[IV]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT_1:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: [[C_0:%.*]] = icmp ugt i8 [[IV]], 2
|
|
; CHECK-NEXT: call void @use(i1 [[C_0]])
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit.1:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%cmp = icmp sgt i8 %N, %iv
|
|
br i1 %cmp, label %loop.latch, label %exit.1
|
|
|
|
loop.latch:
|
|
%t.1 = icmp ugt i8 %iv, %N
|
|
call void @use(i1 %t.1)
|
|
%t.2 = icmp sgt i8 %N, %iv
|
|
call void @use(i1 %t.2)
|
|
%f.1 = icmp ule i8 %N, %iv
|
|
call void @use(i1 %f.1)
|
|
%f.2 = icmp sle i8 %N, %iv
|
|
call void @use(i1 %f.2)
|
|
%c.0 = icmp ugt i8 %iv, 2
|
|
call void @use(i1 %c.0)
|
|
%iv.next = add nsw nuw i8 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit.1:
|
|
ret void
|
|
}
|
|
|
|
|
|
define void @iv_known_non_negative_iv_variable_trip_count_sgt_ops_flipped(i8 %N) {
|
|
; CHECK-LABEL: @iv_known_non_negative_iv_variable_trip_count_sgt_ops_flipped(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[IV]], [[N:%.*]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT_1:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[T_1:%.*]] = icmp ugt i8 [[IV]], [[N]]
|
|
; CHECK-NEXT: call void @use(i1 [[T_1]])
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: [[F_1:%.*]] = icmp ule i8 [[N]], [[IV]]
|
|
; CHECK-NEXT: call void @use(i1 [[F_1]])
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: [[C_0:%.*]] = icmp ugt i8 [[IV]], 2
|
|
; CHECK-NEXT: call void @use(i1 [[C_0]])
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit.1:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%cmp = icmp sgt i8 %iv, %N
|
|
br i1 %cmp, label %loop.latch, label %exit.1
|
|
|
|
loop.latch:
|
|
%t.1 = icmp ugt i8 %iv, %N
|
|
call void @use(i1 %t.1)
|
|
%t.2 = icmp sgt i8 %iv, %N
|
|
call void @use(i1 %t.2)
|
|
%f.1 = icmp ule i8 %N, %iv
|
|
call void @use(i1 %f.1)
|
|
%f.2 = icmp sle i8 %N, %iv
|
|
call void @use(i1 %f.2)
|
|
%c.0 = icmp ugt i8 %iv, 2
|
|
call void @use(i1 %c.0)
|
|
%iv.next = add nsw nuw i8 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit.1:
|
|
ret void
|
|
}
|
|
|
|
define void @iv_known_non_negative_iv_constant_trip_count_sge() {
|
|
; CHECK-LABEL: @iv_known_non_negative_iv_constant_trip_count_sge(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i8 2, [[IV]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT_1:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit.1:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%cmp = icmp sge i8 2, %iv
|
|
br i1 %cmp, label %loop.latch, label %exit.1
|
|
|
|
loop.latch:
|
|
%t.1 = icmp uge i8 2, %iv
|
|
call void @use(i1 %t.1)
|
|
%t.2 = icmp sge i8 2, %iv
|
|
call void @use(i1 %t.2)
|
|
%f.1 = icmp ult i8 2, %iv
|
|
call void @use(i1 %f.1)
|
|
%f.2 = icmp slt i8 2, %iv
|
|
call void @use(i1 %f.2)
|
|
%c.0 = icmp ugt i8 %iv, 2
|
|
call void @use(i1 %c.0)
|
|
%iv.next = add nsw nuw i8 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit.1:
|
|
ret void
|
|
}
|
|
|
|
define void @iv_known_non_negative_iv_variable_trip_count_sge(i8 %N) {
|
|
; CHECK-LABEL: @iv_known_non_negative_iv_variable_trip_count_sge(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i8 [[N:%.*]], [[IV]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT_1:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: [[C_0:%.*]] = icmp ugt i8 [[IV]], 2
|
|
; CHECK-NEXT: call void @use(i1 [[C_0]])
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit.1:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%cmp = icmp sge i8 %N, %iv
|
|
br i1 %cmp, label %loop.latch, label %exit.1
|
|
|
|
loop.latch:
|
|
%t.1 = icmp uge i8 %N, %iv
|
|
call void @use(i1 %t.1)
|
|
%t.2 = icmp sge i8 %N, %iv
|
|
call void @use(i1 %t.2)
|
|
%f.1 = icmp ult i8 %N, %iv
|
|
call void @use(i1 %f.1)
|
|
%f.2 = icmp slt i8 %N, %iv
|
|
call void @use(i1 %f.2)
|
|
%c.0 = icmp ugt i8 %iv, 2
|
|
call void @use(i1 %c.0)
|
|
%iv.next = add nsw nuw i8 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit.1:
|
|
ret void
|
|
}
|
|
|
|
define void @iv_known_non_negative_iv_variable_trip_count_sge_operands_swapped(i8 %N) {
|
|
; CHECK-LABEL: @iv_known_non_negative_iv_variable_trip_count_sge_operands_swapped(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp sge i8 [[IV]], [[N:%.*]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT_1:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[T_1:%.*]] = icmp uge i8 [[N]], [[IV]]
|
|
; CHECK-NEXT: call void @use(i1 [[T_1]])
|
|
; CHECK-NEXT: [[T_2:%.*]] = icmp sge i8 [[N]], [[IV]]
|
|
; CHECK-NEXT: call void @use(i1 [[T_2]])
|
|
; CHECK-NEXT: [[F_1:%.*]] = icmp ult i8 [[N]], [[IV]]
|
|
; CHECK-NEXT: call void @use(i1 [[F_1]])
|
|
; CHECK-NEXT: [[F_2:%.*]] = icmp slt i8 [[N]], [[IV]]
|
|
; CHECK-NEXT: call void @use(i1 [[F_2]])
|
|
; CHECK-NEXT: [[C_0:%.*]] = icmp ugt i8 [[IV]], 2
|
|
; CHECK-NEXT: call void @use(i1 [[C_0]])
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i8 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit.1:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i8 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%cmp = icmp sge i8 %iv, %N
|
|
br i1 %cmp, label %loop.latch, label %exit.1
|
|
|
|
loop.latch:
|
|
%t.1 = icmp uge i8 %N, %iv
|
|
call void @use(i1 %t.1)
|
|
%t.2 = icmp sge i8 %N, %iv
|
|
call void @use(i1 %t.2)
|
|
%f.1 = icmp ult i8 %N, %iv
|
|
call void @use(i1 %f.1)
|
|
%f.2 = icmp slt i8 %N, %iv
|
|
call void @use(i1 %f.2)
|
|
%c.0 = icmp ugt i8 %iv, 2
|
|
call void @use(i1 %c.0)
|
|
%iv.next = add nsw nuw i8 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit.1:
|
|
ret void
|
|
}
|