438 lines
14 KiB
LLVM
438 lines
14 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
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declare void @use(i1)
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define void @loop_phi_pos_start_value(i32 %y, i1 %c, i32 %n) {
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; CHECK-LABEL: @loop_phi_pos_start_value(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C:%.*]], label [[LOOP_HEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[X:%.*]] = phi i32 [ 10, [[ENTRY:%.*]] ], [ [[X_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C_1:%.*]] = icmp slt i32 [[X]], [[N:%.*]]
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; CHECK-NEXT: br i1 [[C_1]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[F_1:%.*]] = icmp sle i32 [[X]], [[N]]
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[T_1:%.*]] = icmp sgt i32 [[X]], [[N]]
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: [[T_2:%.*]] = icmp sge i32 [[X]], 10
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; CHECK-NEXT: call void @use(i1 [[T_2]])
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; CHECK-NEXT: [[C_2:%.*]] = icmp sle i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_2]])
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; CHECK-NEXT: [[C_3:%.*]] = icmp sgt i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_3]])
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; CHECK-NEXT: [[C_4:%.*]] = icmp sge i32 [[X]], 0
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; CHECK-NEXT: call void @use(i1 [[C_4]])
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; CHECK-NEXT: [[C_5:%.*]] = icmp sge i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_5]])
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; CHECK-NEXT: [[X_NEXT]] = add nsw i32 [[X]], 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: [[C_6:%.*]] = icmp sgt i32 [[Y:%.*]], 10
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; CHECK-NEXT: call void @use(i1 [[C_6]])
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; CHECK-NEXT: ret void
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;
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entry:
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br i1 %c, label %loop.header, label %exit
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loop.header:
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%x = phi i32 [ 10, %entry ], [ %x.next, %loop.latch ]
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%c.1 = icmp slt i32 %x, %n
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br i1 %c.1, label %loop.latch, label %exit
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loop.latch:
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%f.1 = icmp sle i32 %x, %n
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call void @use(i1 %f.1)
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%t.1 = icmp sgt i32 %x, %n
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call void @use(i1 %t.1)
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%t.2 = icmp sge i32 %x, 10
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call void @use(i1 %t.2)
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%c.2 = icmp sle i32 %x, 9
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call void @use(i1 %c.2)
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%c.3 = icmp sgt i32 %x, 9
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call void @use(i1 %c.3)
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%c.4 = icmp sge i32 %x, 0
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call void @use(i1 %c.4)
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%c.5 = icmp sge i32 %x, 9
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call void @use(i1 %c.5)
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%x.next = add nsw i32 %x, 1
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br label %loop.header
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exit:
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%c.6 = icmp sgt i32 %y, 10
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call void @use(i1 %c.6)
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ret void
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}
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define void @loop_phi_neg_start_value(i32 %y, i1 %c, i32 %n) {
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; CHECK-LABEL: @loop_phi_neg_start_value(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C:%.*]], label [[LOOP_HEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[X:%.*]] = phi i32 [ -10, [[ENTRY:%.*]] ], [ [[X_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C_1:%.*]] = icmp slt i32 [[X]], [[N:%.*]]
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; CHECK-NEXT: br i1 [[C_1]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[F_1:%.*]] = icmp sle i32 [[X]], [[N]]
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[T_1:%.*]] = icmp sgt i32 [[X]], [[N]]
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: [[T_2:%.*]] = icmp sge i32 [[X]], -10
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; CHECK-NEXT: call void @use(i1 [[T_2]])
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; CHECK-NEXT: [[C_2:%.*]] = icmp sle i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_2]])
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; CHECK-NEXT: [[C_3:%.*]] = icmp sgt i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_3]])
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; CHECK-NEXT: [[C_4:%.*]] = icmp sge i32 [[X]], 0
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; CHECK-NEXT: call void @use(i1 [[C_4]])
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; CHECK-NEXT: [[C_5:%.*]] = icmp sge i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_5]])
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; CHECK-NEXT: [[X_NEXT]] = add nsw i32 [[X]], 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: [[C_6:%.*]] = icmp sgt i32 [[Y:%.*]], 10
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; CHECK-NEXT: call void @use(i1 [[C_6]])
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; CHECK-NEXT: ret void
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;
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entry:
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br i1 %c, label %loop.header, label %exit
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loop.header:
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%x = phi i32 [ -10, %entry ], [ %x.next, %loop.latch ]
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%c.1 = icmp slt i32 %x, %n
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br i1 %c.1, label %loop.latch, label %exit
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loop.latch:
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%f.1 = icmp sle i32 %x, %n
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call void @use(i1 %f.1)
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%t.1 = icmp sgt i32 %x, %n
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call void @use(i1 %t.1)
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%t.2 = icmp sge i32 %x, -10
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call void @use(i1 %t.2)
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%c.2 = icmp sle i32 %x, 9
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call void @use(i1 %c.2)
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%c.3 = icmp sgt i32 %x, 9
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call void @use(i1 %c.3)
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%c.4 = icmp sge i32 %x, 0
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call void @use(i1 %c.4)
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%c.5 = icmp sge i32 %x, 9
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call void @use(i1 %c.5)
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%x.next = add nsw i32 %x, 1
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br label %loop.header
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exit:
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%c.6 = icmp sgt i32 %y, 10
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call void @use(i1 %c.6)
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ret void
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}
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define void @loop_count_down(i32 %y, i1 %c, i32 %n) {
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; CHECK-LABEL: @loop_count_down(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C:%.*]], label [[LOOP_HEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[X:%.*]] = phi i32 [ [[N:%.*]], [[ENTRY:%.*]] ], [ [[X_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C_1:%.*]] = icmp sge i32 [[X]], 0
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; CHECK-NEXT: br i1 [[C_1]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[F_1:%.*]] = icmp sle i32 [[X]], [[N]]
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; CHECK-NEXT: call void @use(i1 [[F_1]])
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; CHECK-NEXT: [[T_1:%.*]] = icmp sgt i32 [[X]], [[N]]
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; CHECK-NEXT: call void @use(i1 [[T_1]])
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; CHECK-NEXT: [[T_2:%.*]] = icmp sge i32 [[X]], 0
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[T_3:%.*]] = icmp sge i32 [[X]], -1
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[C_2:%.*]] = icmp sle i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_2]])
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; CHECK-NEXT: [[C_3:%.*]] = icmp sgt i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_3]])
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; CHECK-NEXT: [[C_4:%.*]] = icmp sge i32 [[X]], 1
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; CHECK-NEXT: call void @use(i1 [[C_4]])
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; CHECK-NEXT: [[C_5:%.*]] = icmp sge i32 [[X]], 2
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; CHECK-NEXT: call void @use(i1 [[C_5]])
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; CHECK-NEXT: [[X_NEXT]] = add nsw i32 [[X]], 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: [[C_6:%.*]] = icmp sgt i32 [[Y:%.*]], 10
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; CHECK-NEXT: call void @use(i1 [[C_6]])
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; CHECK-NEXT: ret void
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;
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entry:
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br i1 %c, label %loop.header, label %exit
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loop.header:
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%x = phi i32 [ %n, %entry ], [ %x.next, %loop.latch ]
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%c.1 = icmp sge i32 %x, 0
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br i1 %c.1, label %loop.latch, label %exit
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loop.latch:
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%f.1 = icmp sle i32 %x, %n
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call void @use(i1 %f.1)
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%t.1 = icmp sgt i32 %x, %n
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call void @use(i1 %t.1)
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%t.2 = icmp sge i32 %x, 0
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call void @use(i1 %t.2)
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%t.3 = icmp sge i32 %x, -1
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call void @use(i1 %t.3)
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%c.2 = icmp sle i32 %x, 9
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call void @use(i1 %c.2)
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%c.3 = icmp sgt i32 %x, 9
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call void @use(i1 %c.3)
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%c.4 = icmp sge i32 %x, 1
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call void @use(i1 %c.4)
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%c.5 = icmp sge i32 %x, 2
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call void @use(i1 %c.5)
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%x.next = add nsw i32 %x, 1
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br label %loop.header
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exit:
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%c.6 = icmp sgt i32 %y, 10
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call void @use(i1 %c.6)
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ret void
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}
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define void @loop_latch_may_not_executed(i32 %y, i1 %c, i32 %n) {
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; CHECK-LABEL: @loop_latch_may_not_executed(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C:%.*]], label [[LOOP_HEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[X:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[X_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C_1:%.*]] = icmp ugt i32 [[X]], [[N:%.*]]
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; CHECK-NEXT: br i1 [[C_1]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[F_1:%.*]] = icmp ule i32 [[X]], [[N]]
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: [[T_1:%.*]] = icmp ugt i32 [[X]], [[N]]
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[C_2:%.*]] = icmp ule i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_2]])
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; CHECK-NEXT: [[C_3:%.*]] = icmp ugt i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 [[C_3]])
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; CHECK-NEXT: [[X_NEXT]] = add i32 [[X]], 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: [[C_4:%.*]] = icmp ugt i32 [[Y:%.*]], 10
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; CHECK-NEXT: call void @use(i1 [[C_4]])
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; CHECK-NEXT: ret void
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;
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entry:
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br i1 %c, label %loop.header, label %exit
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loop.header:
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%x = phi i32 [ 0, %entry ], [ %x.next, %loop.latch ]
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%c.1 = icmp ugt i32 %x, %n
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br i1 %c.1, label %loop.latch, label %exit
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loop.latch:
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%f.1 = icmp ule i32 %x, %n
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call void @use(i1 %f.1)
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%t.1 = icmp ugt i32 %x, %n
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call void @use(i1 %t.1)
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%c.2 = icmp ule i32 %x, 9
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call void @use(i1 %c.2)
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%c.3 = icmp ugt i32 %x, 9
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call void @use(i1 %c.3)
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%x.next = add i32 %x, 1
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br label %loop.header
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exit:
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%c.4 = icmp ugt i32 %y, 10
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call void @use(i1 %c.4)
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ret void
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}
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define void @loop_latch_not_executed_constant_bound(i32 %y, i1 %c) {
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; CHECK-LABEL: @loop_latch_not_executed_constant_bound(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C:%.*]], label [[LOOP_HEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[X:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[X_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[C_1:%.*]] = icmp ugt i32 [[X]], 10
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; CHECK-NEXT: br i1 [[C_1]], label [[LOOP_LATCH]], label [[EXIT]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[T_1:%.*]] = icmp ule i32 [[X]], 10
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: [[F_1:%.*]] = icmp ugt i32 [[X]], 10
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[C_2:%.*]] = icmp ule i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 false)
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; CHECK-NEXT: [[C_3:%.*]] = icmp ugt i32 [[X]], 9
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[X_NEXT]] = add i32 [[X]], 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: [[C_4:%.*]] = icmp ugt i32 [[Y:%.*]], 10
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; CHECK-NEXT: call void @use(i1 [[C_4]])
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; CHECK-NEXT: ret void
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;
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entry:
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br i1 %c, label %loop.header, label %exit
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loop.header:
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%x = phi i32 [ 0, %entry ], [ %x.next, %loop.latch ]
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%c.1 = icmp ugt i32 %x, 10
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br i1 %c.1, label %loop.latch, label %exit
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loop.latch:
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%t.1 = icmp ule i32 %x, 10
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call void @use(i1 %t.1)
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%f.1 = icmp ugt i32 %x, 10
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call void @use(i1 %f.1)
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%c.2 = icmp ule i32 %x, 9
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call void @use(i1 %c.2)
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%c.3 = icmp ugt i32 %x, 9
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call void @use(i1 %c.3)
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%x.next = add i32 %x, 1
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br label %loop.header
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exit:
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%c.4 = icmp ugt i32 %y, 10
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call void @use(i1 %c.4)
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ret void
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}
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define void @loop_iv_cond_variable_bound(i32 %n) {
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; CHECK-LABEL: @loop_iv_cond_variable_bound(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[T_1:%.*]] = icmp ule i32 [[IV]], [[N:%.*]]
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; CHECK-NEXT: call void @use(i1 [[T_1]])
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; CHECK-NEXT: [[T_2:%.*]] = icmp sge i32 [[IV]], 0
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; CHECK-NEXT: call void @use(i1 [[T_2]])
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; CHECK-NEXT: [[T_3:%.*]] = icmp sge i32 [[IV]], -1
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; CHECK-NEXT: call void @use(i1 [[T_3]])
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; CHECK-NEXT: [[C_1:%.*]] = icmp ult i32 [[IV]], [[N]]
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; CHECK-NEXT: call void @use(i1 [[C_1]])
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; CHECK-NEXT: [[C_2:%.*]] = icmp ugt i32 [[IV]], 1
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; CHECK-NEXT: call void @use(i1 [[C_2]])
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[IV]], [[N]]
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; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT:%.*]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[T_4:%.*]] = icmp ule i32 [[IV]], [[N]]
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[C_3:%.*]] = icmp ult i32 [[IV]], 2
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; CHECK-NEXT: call void @use(i1 [[C_3]])
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; CHECK-NEXT: [[C_4:%.*]] = icmp ugt i32 [[IV]], 1
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; CHECK-NEXT: call void @use(i1 [[C_4]])
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
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; CHECK-NEXT: br label [[LOOP_HEADER]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
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%t.1 = icmp ule i32 %iv, %n
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call void @use(i1 %t.1)
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%t.2 = icmp sge i32 %iv, 0
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call void @use(i1 %t.2)
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%t.3 = icmp sge i32 %iv, -1
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call void @use(i1 %t.3)
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%c.1 = icmp ult i32 %iv, %n
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call void @use(i1 %c.1)
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%c.2 = icmp ugt i32 %iv, 1
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call void @use(i1 %c.2)
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%cmp = icmp ult i32 %iv, %n
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br i1 %cmp, label %loop.latch, label %exit
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loop.latch:
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%t.4 = icmp ule i32 %iv, %n
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call void @use(i1 %t.4)
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%c.3 = icmp ult i32 %iv, 2
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call void @use(i1 %c.3)
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%c.4 = icmp ugt i32 %iv, 1
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call void @use(i1 %c.4)
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%iv.next = add nuw nsw i32 %iv, 1
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br label %loop.header
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exit:
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ret void
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}
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define void @loop_iv_cond_constant_bound() {
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; CHECK-LABEL: @loop_iv_cond_constant_bound(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
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; CHECK: loop.header:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
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; CHECK-NEXT: [[T_1:%.*]] = icmp ule i32 [[IV]], 2
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; CHECK-NEXT: call void @use(i1 [[T_1]])
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; CHECK-NEXT: [[T_2:%.*]] = icmp sge i32 [[IV]], 0
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; CHECK-NEXT: call void @use(i1 [[T_2]])
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; CHECK-NEXT: [[T_3:%.*]] = icmp sge i32 [[IV]], -1
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; CHECK-NEXT: call void @use(i1 [[T_3]])
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; 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: br i1 [[CMP]], label [[LOOP_LATCH]], label [[EXIT:%.*]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[T_4:%.*]] = icmp ule i32 [[IV]], 2
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: [[C_3:%.*]] = icmp ult i32 [[IV]], 2
|
|
; CHECK-NEXT: call void @use(i1 true)
|
|
; CHECK-NEXT: [[C_4:%.*]] = icmp ugt i32 [[IV]], 1
|
|
; CHECK-NEXT: call void @use(i1 false)
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%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
|
|
br i1 %cmp, label %loop.latch, label %exit
|
|
|
|
loop.latch:
|
|
%t.4 = icmp ule i32 %iv, 2
|
|
call void @use(i1 %t.4)
|
|
|
|
%c.3 = icmp ult i32 %iv, 2
|
|
call void @use(i1 %c.3)
|
|
%c.4 = icmp ugt i32 %iv, 1
|
|
call void @use(i1 %c.4)
|
|
|
|
%iv.next = add nuw nsw i32 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|