forked from OSchip/llvm-project
233 lines
7.0 KiB
LLVM
233 lines
7.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -S < %s -indvars | FileCheck %s
|
|
; RUN: opt -S < %s -passes=indvars | FileCheck %s
|
|
|
|
declare i1 @cond()
|
|
declare void @exit(i32 %code)
|
|
|
|
define void @test_01(i32* %p, i32 %shift) {
|
|
; CHECK-LABEL: @test_01(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[P:%.*]], align 4, !range [[RNG0:![0-9]+]]
|
|
; CHECK-NEXT: [[X_SHIFTED:%.*]] = lshr i32 [[X]], [[SHIFT:%.*]]
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
|
; CHECK: loop:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
|
|
; CHECK-NEXT: [[LESS_THAN_SHIFTED:%.*]] = icmp slt i32 [[IV]], [[X_SHIFTED]]
|
|
; CHECK-NEXT: br i1 [[LESS_THAN_SHIFTED]], label [[GUARDED:%.*]], label [[FAILURE:%.*]]
|
|
; CHECK: guarded:
|
|
; CHECK-NEXT: br i1 true, label [[BACKEDGE]], label [[NEVER_HAPPENS:%.*]]
|
|
; CHECK: backedge:
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
|
|
; CHECK-NEXT: [[LOOP_COND:%.*]] = call i1 @cond()
|
|
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[LOOP]], label [[DONE:%.*]]
|
|
; CHECK: done:
|
|
; CHECK-NEXT: ret void
|
|
; CHECK: failure:
|
|
; CHECK-NEXT: call void @exit(i32 1)
|
|
; CHECK-NEXT: unreachable
|
|
; CHECK: never_happens:
|
|
; CHECK-NEXT: call void @exit(i32 0)
|
|
; CHECK-NEXT: unreachable
|
|
;
|
|
entry:
|
|
%x = load i32, i32* %p, !range !0
|
|
%x.shifted = lshr i32 %x, %shift
|
|
br label %loop
|
|
|
|
loop:
|
|
%iv = phi i32 [0, %entry], [%iv.next, %backedge]
|
|
%less.than.shifted = icmp slt i32 %iv, %x.shifted
|
|
br i1 %less.than.shifted, label %guarded, label %failure
|
|
|
|
guarded:
|
|
%less.than.x = icmp slt i32 %iv, %x
|
|
br i1 %less.than.x, label %backedge, label %never_happens
|
|
|
|
backedge:
|
|
%iv.next = add nuw nsw i32 %iv, 1
|
|
%loop.cond = call i1 @cond()
|
|
br i1 %loop.cond, label %loop, label %done
|
|
|
|
done:
|
|
ret void
|
|
|
|
failure:
|
|
call void @exit(i32 1)
|
|
unreachable
|
|
|
|
never_happens:
|
|
call void @exit(i32 0)
|
|
unreachable
|
|
}
|
|
|
|
define void @test_02(i32* %p, i32 %shift) {
|
|
; CHECK-LABEL: @test_02(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[P:%.*]], align 4, !range [[RNG0]]
|
|
; CHECK-NEXT: [[X_SHIFTED:%.*]] = lshr i32 [[X]], [[SHIFT:%.*]]
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
|
; CHECK: loop:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
|
|
; CHECK-NEXT: [[LESS_THAN_SHIFTED:%.*]] = icmp sgt i32 [[X_SHIFTED]], [[IV]]
|
|
; CHECK-NEXT: br i1 [[LESS_THAN_SHIFTED]], label [[GUARDED:%.*]], label [[FAILURE:%.*]]
|
|
; CHECK: guarded:
|
|
; CHECK-NEXT: br i1 true, label [[BACKEDGE]], label [[NEVER_HAPPENS:%.*]]
|
|
; CHECK: backedge:
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
|
|
; CHECK-NEXT: [[LOOP_COND:%.*]] = call i1 @cond()
|
|
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[LOOP]], label [[DONE:%.*]]
|
|
; CHECK: done:
|
|
; CHECK-NEXT: ret void
|
|
; CHECK: failure:
|
|
; CHECK-NEXT: call void @exit(i32 1)
|
|
; CHECK-NEXT: unreachable
|
|
; CHECK: never_happens:
|
|
; CHECK-NEXT: call void @exit(i32 0)
|
|
; CHECK-NEXT: unreachable
|
|
;
|
|
entry:
|
|
%x = load i32, i32* %p, !range !0
|
|
%x.shifted = lshr i32 %x, %shift
|
|
br label %loop
|
|
|
|
loop:
|
|
%iv = phi i32 [0, %entry], [%iv.next, %backedge]
|
|
%less.than.shifted = icmp sgt i32 %x.shifted, %iv
|
|
br i1 %less.than.shifted, label %guarded, label %failure
|
|
|
|
guarded:
|
|
%less.than.x = icmp sgt i32 %x, %iv
|
|
br i1 %less.than.x, label %backedge, label %never_happens
|
|
|
|
backedge:
|
|
%iv.next = add nuw nsw i32 %iv, 1
|
|
%loop.cond = call i1 @cond()
|
|
br i1 %loop.cond, label %loop, label %done
|
|
|
|
done:
|
|
ret void
|
|
|
|
failure:
|
|
call void @exit(i32 1)
|
|
unreachable
|
|
|
|
never_happens:
|
|
call void @exit(i32 0)
|
|
unreachable
|
|
}
|
|
|
|
define void @test_03(i32* %p, i32 %shift) {
|
|
; CHECK-LABEL: @test_03(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[P:%.*]], align 4, !range [[RNG0]]
|
|
; CHECK-NEXT: [[X_SHIFTED:%.*]] = lshr i32 [[X]], [[SHIFT:%.*]]
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
|
; CHECK: loop:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
|
|
; CHECK-NEXT: [[LESS_THAN_SHIFTED:%.*]] = icmp ult i32 [[IV]], [[X_SHIFTED]]
|
|
; CHECK-NEXT: br i1 [[LESS_THAN_SHIFTED]], label [[GUARDED:%.*]], label [[FAILURE:%.*]]
|
|
; CHECK: guarded:
|
|
; CHECK-NEXT: br i1 true, label [[BACKEDGE]], label [[NEVER_HAPPENS:%.*]]
|
|
; CHECK: backedge:
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
|
|
; CHECK-NEXT: [[LOOP_COND:%.*]] = call i1 @cond()
|
|
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[LOOP]], label [[DONE:%.*]]
|
|
; CHECK: done:
|
|
; CHECK-NEXT: ret void
|
|
; CHECK: failure:
|
|
; CHECK-NEXT: call void @exit(i32 1)
|
|
; CHECK-NEXT: unreachable
|
|
; CHECK: never_happens:
|
|
; CHECK-NEXT: call void @exit(i32 0)
|
|
; CHECK-NEXT: unreachable
|
|
;
|
|
entry:
|
|
%x = load i32, i32* %p, !range !0
|
|
%x.shifted = lshr i32 %x, %shift
|
|
br label %loop
|
|
|
|
loop:
|
|
%iv = phi i32 [0, %entry], [%iv.next, %backedge]
|
|
%less.than.shifted = icmp ult i32 %iv, %x.shifted
|
|
br i1 %less.than.shifted, label %guarded, label %failure
|
|
|
|
guarded:
|
|
%less.than.x = icmp ult i32 %iv, %x
|
|
br i1 %less.than.x, label %backedge, label %never_happens
|
|
|
|
backedge:
|
|
%iv.next = add nuw nsw i32 %iv, 1
|
|
%loop.cond = call i1 @cond()
|
|
br i1 %loop.cond, label %loop, label %done
|
|
|
|
done:
|
|
ret void
|
|
|
|
failure:
|
|
call void @exit(i32 1)
|
|
unreachable
|
|
|
|
never_happens:
|
|
call void @exit(i32 0)
|
|
unreachable
|
|
}
|
|
|
|
define void @test_04(i32* %p, i32 %shift) {
|
|
; CHECK-LABEL: @test_04(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[P:%.*]], align 4, !range [[RNG0]]
|
|
; CHECK-NEXT: [[X_SHIFTED:%.*]] = lshr i32 [[X]], [[SHIFT:%.*]]
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
|
; CHECK: loop:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
|
|
; CHECK-NEXT: [[LESS_THAN_SHIFTED:%.*]] = icmp ugt i32 [[X_SHIFTED]], [[IV]]
|
|
; CHECK-NEXT: br i1 [[LESS_THAN_SHIFTED]], label [[GUARDED:%.*]], label [[FAILURE:%.*]]
|
|
; CHECK: guarded:
|
|
; CHECK-NEXT: br i1 true, label [[BACKEDGE]], label [[NEVER_HAPPENS:%.*]]
|
|
; CHECK: backedge:
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
|
|
; CHECK-NEXT: [[LOOP_COND:%.*]] = call i1 @cond()
|
|
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[LOOP]], label [[DONE:%.*]]
|
|
; CHECK: done:
|
|
; CHECK-NEXT: ret void
|
|
; CHECK: failure:
|
|
; CHECK-NEXT: call void @exit(i32 1)
|
|
; CHECK-NEXT: unreachable
|
|
; CHECK: never_happens:
|
|
; CHECK-NEXT: call void @exit(i32 0)
|
|
; CHECK-NEXT: unreachable
|
|
;
|
|
entry:
|
|
%x = load i32, i32* %p, !range !0
|
|
%x.shifted = lshr i32 %x, %shift
|
|
br label %loop
|
|
|
|
loop:
|
|
%iv = phi i32 [0, %entry], [%iv.next, %backedge]
|
|
%less.than.shifted = icmp ugt i32 %x.shifted, %iv
|
|
br i1 %less.than.shifted, label %guarded, label %failure
|
|
|
|
guarded:
|
|
%less.than.x = icmp ugt i32 %x, %iv
|
|
br i1 %less.than.x, label %backedge, label %never_happens
|
|
|
|
backedge:
|
|
%iv.next = add nuw nsw i32 %iv, 1
|
|
%loop.cond = call i1 @cond()
|
|
br i1 %loop.cond, label %loop, label %done
|
|
|
|
done:
|
|
ret void
|
|
|
|
failure:
|
|
call void @exit(i32 1)
|
|
unreachable
|
|
|
|
never_happens:
|
|
call void @exit(i32 0)
|
|
unreachable
|
|
}
|
|
|
|
!0 = !{i32 0, i32 2147483647}
|