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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=loop-unroll -unroll-runtime %s -o - | FileCheck %s
; RUN: opt -S -passes=loop-unroll -unroll-runtime -unroll-max-upperbound=6 %s -o - | FileCheck %s --check-prefix=UPPER
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
@global = dso_local local_unnamed_addr global i32 0, align 4
@global.1 = dso_local local_unnamed_addr global ptr null, align 4
; Check that loop in hoge_3, with a runtime upperbound of 3, is not unrolled.
define dso_local void @hoge_3(i8 %arg) {
; CHECK-LABEL: @hoge_3(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[X:%.*]] = load i32, ptr @global, align 4
; CHECK-NEXT: [[Y:%.*]] = load ptr, ptr @global.1, align 4
; CHECK-NEXT: [[TMP0:%.*]] = icmp ult i32 [[X]], 17
; CHECK-NEXT: br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
; CHECK: loop.preheader:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[IV_NEXT:%.*]], [[LOOP]] ], [ [[X]], [[LOOP_PREHEADER]] ]
; CHECK-NEXT: [[PTR:%.*]] = phi ptr [ [[PTR_NEXT:%.*]], [[LOOP]] ], [ [[Y]], [[LOOP_PREHEADER]] ]
; CHECK-NEXT: [[IV_NEXT]] = add nuw i32 [[IV]], 8
; CHECK-NEXT: [[PTR_NEXT]] = getelementptr inbounds i8, ptr [[PTR]], i32 1
; CHECK-NEXT: store i8 [[ARG:%.*]], ptr [[PTR_NEXT]], align 1
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[IV_NEXT]], 17
; CHECK-NEXT: br i1 [[TMP1]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; CHECK: exit.loopexit:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
; UPPER-LABEL: @hoge_3(
; UPPER-NEXT: entry:
; UPPER-NEXT: [[X:%.*]] = load i32, ptr @global, align 4
; UPPER-NEXT: [[Y:%.*]] = load ptr, ptr @global.1, align 4
; UPPER-NEXT: [[TMP0:%.*]] = icmp ult i32 [[X]], 17
; UPPER-NEXT: br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
; UPPER: loop.preheader:
; UPPER-NEXT: br label [[LOOP:%.*]]
; UPPER: loop:
; UPPER-NEXT: [[IV:%.*]] = phi i32 [ [[IV_NEXT:%.*]], [[LOOP]] ], [ [[X]], [[LOOP_PREHEADER]] ]
; UPPER-NEXT: [[PTR:%.*]] = phi ptr [ [[PTR_NEXT:%.*]], [[LOOP]] ], [ [[Y]], [[LOOP_PREHEADER]] ]
; UPPER-NEXT: [[IV_NEXT]] = add nuw i32 [[IV]], 8
; UPPER-NEXT: [[PTR_NEXT]] = getelementptr inbounds i8, ptr [[PTR]], i32 1
; UPPER-NEXT: store i8 [[ARG:%.*]], ptr [[PTR_NEXT]], align 1
; UPPER-NEXT: [[TMP1:%.*]] = icmp ult i32 [[IV_NEXT]], 17
; UPPER-NEXT: br i1 [[TMP1]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; UPPER: exit.loopexit:
; UPPER-NEXT: br label [[EXIT]]
; UPPER: exit:
; UPPER-NEXT: ret void
;
entry:
%x = load i32, ptr @global, align 4
%y = load ptr, ptr @global.1, align 4
%0 = icmp ult i32 %x, 17
br i1 %0, label %loop, label %exit
loop:
%iv = phi i32 [ %x, %entry ], [ %iv.next, %loop ]
%ptr = phi ptr [ %y, %entry ], [ %ptr.next, %loop ]
%iv.next = add nuw i32 %iv, 8
%ptr.next = getelementptr inbounds i8, ptr %ptr, i32 1
store i8 %arg, ptr %ptr.next, align 1
%1 = icmp ult i32 %iv.next, 17
br i1 %1, label %loop, label %exit
exit:
ret void
}
; Check that loop in hoge_5, with a runtime upperbound of 5, is unrolled when -unroll-max-upperbound=4
define dso_local void @hoge_5(i8 %arg) {
; CHECK-LABEL: @hoge_5(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[X:%.*]] = load i32, ptr @global, align 4
; CHECK-NEXT: [[Y:%.*]] = load ptr, ptr @global.1, align 4
; CHECK-NEXT: [[TMP0:%.*]] = icmp ult i32 [[X]], 17
; CHECK-NEXT: br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
; CHECK: loop.preheader:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[IV_NEXT:%.*]], [[LOOP]] ], [ [[X]], [[LOOP_PREHEADER]] ]
; CHECK-NEXT: [[PTR:%.*]] = phi ptr [ [[PTR_NEXT:%.*]], [[LOOP]] ], [ [[Y]], [[LOOP_PREHEADER]] ]
; CHECK-NEXT: [[IV_NEXT]] = add nuw i32 [[IV]], 4
; CHECK-NEXT: [[PTR_NEXT]] = getelementptr inbounds i8, ptr [[PTR]], i32 1
; CHECK-NEXT: store i8 [[ARG:%.*]], ptr [[PTR_NEXT]], align 1
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[IV_NEXT]], 17
; CHECK-NEXT: br i1 [[TMP1]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; CHECK: exit.loopexit:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
; UPPER-LABEL: @hoge_5(
; UPPER-NEXT: entry:
; UPPER-NEXT: [[X:%.*]] = load i32, ptr @global, align 4
; UPPER-NEXT: [[Y:%.*]] = load ptr, ptr @global.1, align 4
; UPPER-NEXT: [[TMP0:%.*]] = icmp ult i32 [[X]], 17
; UPPER-NEXT: br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]]
; UPPER: loop.preheader:
; UPPER-NEXT: br label [[LOOP:%.*]]
; UPPER: loop:
; UPPER-NEXT: [[IV_NEXT:%.*]] = add nuw i32 [[X]], 4
; UPPER-NEXT: [[PTR_NEXT:%.*]] = getelementptr inbounds i8, ptr [[Y]], i32 1
; UPPER-NEXT: store i8 [[ARG:%.*]], ptr [[PTR_NEXT]], align 1
; UPPER-NEXT: [[TMP1:%.*]] = icmp ult i32 [[IV_NEXT]], 17
; UPPER-NEXT: br i1 [[TMP1]], label [[LOOP_1:%.*]], label [[EXIT_LOOPEXIT:%.*]]
; UPPER: loop.1:
; UPPER-NEXT: [[IV_NEXT_1:%.*]] = add nuw i32 [[IV_NEXT]], 4
; UPPER-NEXT: [[PTR_NEXT_1:%.*]] = getelementptr inbounds i8, ptr [[PTR_NEXT]], i32 1
; UPPER-NEXT: store i8 [[ARG]], ptr [[PTR_NEXT_1]], align 1
; UPPER-NEXT: [[TMP2:%.*]] = icmp ult i32 [[IV_NEXT_1]], 17
; UPPER-NEXT: br i1 [[TMP2]], label [[LOOP_2:%.*]], label [[EXIT_LOOPEXIT]]
; UPPER: loop.2:
; UPPER-NEXT: [[IV_NEXT_2:%.*]] = add nuw i32 [[IV_NEXT_1]], 4
; UPPER-NEXT: [[PTR_NEXT_2:%.*]] = getelementptr inbounds i8, ptr [[PTR_NEXT_1]], i32 1
; UPPER-NEXT: store i8 [[ARG]], ptr [[PTR_NEXT_2]], align 1
; UPPER-NEXT: [[TMP3:%.*]] = icmp ult i32 [[IV_NEXT_2]], 17
; UPPER-NEXT: br i1 [[TMP3]], label [[LOOP_3:%.*]], label [[EXIT_LOOPEXIT]]
; UPPER: loop.3:
; UPPER-NEXT: [[IV_NEXT_3:%.*]] = add nuw i32 [[IV_NEXT_2]], 4
; UPPER-NEXT: [[PTR_NEXT_3:%.*]] = getelementptr inbounds i8, ptr [[PTR_NEXT_2]], i32 1
; UPPER-NEXT: store i8 [[ARG]], ptr [[PTR_NEXT_3]], align 1
; UPPER-NEXT: [[TMP4:%.*]] = icmp ult i32 [[IV_NEXT_3]], 17
; UPPER-NEXT: br i1 [[TMP4]], label [[LOOP_4:%.*]], label [[EXIT_LOOPEXIT]]
; UPPER: loop.4:
; UPPER-NEXT: [[IV_NEXT_4:%.*]] = add nuw i32 [[IV_NEXT_3]], 4
; UPPER-NEXT: [[PTR_NEXT_4:%.*]] = getelementptr inbounds i8, ptr [[PTR_NEXT_3]], i32 1
; UPPER-NEXT: store i8 [[ARG]], ptr [[PTR_NEXT_4]], align 1
; UPPER-NEXT: [[TMP5:%.*]] = icmp ult i32 [[IV_NEXT_4]], 17
; UPPER-NEXT: br i1 [[TMP5]], label [[LOOP_5:%.*]], label [[EXIT_LOOPEXIT]]
; UPPER: loop.5:
; UPPER-NEXT: [[PTR_NEXT_5:%.*]] = getelementptr inbounds i8, ptr [[PTR_NEXT_4]], i32 1
; UPPER-NEXT: store i8 [[ARG]], ptr [[PTR_NEXT_5]], align 1
; UPPER-NEXT: br label [[EXIT_LOOPEXIT]]
; UPPER: exit.loopexit:
; UPPER-NEXT: br label [[EXIT]]
; UPPER: exit:
; UPPER-NEXT: ret void
;
entry:
%x = load i32, ptr @global, align 4
%y = load ptr, ptr @global.1, align 4
%0 = icmp ult i32 %x, 17
br i1 %0, label %loop, label %exit
loop:
%iv = phi i32 [ %x, %entry ], [ %iv.next, %loop ]
%ptr = phi ptr [ %y, %entry ], [ %ptr.next, %loop ]
%iv.next = add nuw i32 %iv, 4
%ptr.next = getelementptr inbounds i8, ptr %ptr, i32 1
store i8 %arg, ptr %ptr.next, align 1
%1 = icmp ult i32 %iv.next, 17
br i1 %1, label %loop, label %exit
exit:
ret void
}
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