3e39cfe5b4
This reverts commit 0c03f48480.
Going to fix forward size regression instead due to more dependent patches needing to be reverted otherwise.
59 lines
2.0 KiB
LLVM
59 lines
2.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes='default<Os>' -S %s | FileCheck %s
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target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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declare void @use(i16)
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define void @test_remove_check_with_incrementing_integer_induction(i16 %start, i8 %len.n, i16 %a) {
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; CHECK-LABEL: @test_remove_check_with_incrementing_integer_induction(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[LEN:%.*]] = zext i8 [[LEN_N:%.*]] to i16
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; CHECK-NEXT: [[LEN_NEG_NOT:%.*]] = icmp ult i16 [[LEN]], [[A:%.*]]
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; CHECK-NEXT: [[C1:%.*]] = icmp ne i8 [[LEN_N]], 0
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; CHECK-NEXT: [[OR_COND3:%.*]] = and i1 [[LEN_NEG_NOT]], [[C1]]
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; CHECK-NEXT: br i1 [[OR_COND3]], label [[LOOP_LATCH_PREHEADER:%.*]], label [[EXIT:%.*]]
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; CHECK: loop.latch.preheader:
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; CHECK-NEXT: [[TMP0:%.*]] = add i16 [[A]], -1
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; CHECK-NEXT: [[TMP1:%.*]] = add nsw i16 [[LEN]], -1
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; CHECK-NEXT: [[UMIN:%.*]] = tail call i16 @llvm.umin.i16(i16 [[TMP0]], i16 [[TMP1]])
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; CHECK-NEXT: br label [[LOOP_LATCH:%.*]]
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; CHECK: loop.latch:
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; CHECK-NEXT: [[IV2:%.*]] = phi i16 [ [[IV_NEXT:%.*]], [[LOOP_LATCH]] ], [ 0, [[LOOP_LATCH_PREHEADER]] ]
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; CHECK-NEXT: tail call void @use(i16 [[IV2]])
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i16 [[IV2]], 1
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; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i16 [[IV2]], [[UMIN]]
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; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[LOOP_LATCH]]
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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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%len = zext i8 %len.n to i16
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%upper = add nuw nsw i16 %start, %len
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%len.neg = icmp uge i16 %len, %a
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br i1 %len.neg, label %exit, label %loop.ph
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loop.ph:
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br label %loop.header
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loop.header:
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%iv = phi i16 [ 0, %loop.ph ], [ %iv.next, %loop.latch ]
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%c = icmp eq i16 %iv, %len
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br i1 %c, label %exit, label %for.body
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for.body:
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%t.1 = icmp uge i16 %iv, 0
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%t.2 = icmp ult i16 %iv, %a
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%and = and i1 %t.1, %t.2
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br i1 %and, label %loop.latch, label %exit
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loop.latch:
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call void @use(i16 %iv)
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%iv.next = add nuw nsw i16 %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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