148 lines
3.9 KiB
LLVM
148 lines
3.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes='simplifycfg<sink-common-insts;switch-to-lookup>' < %s | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
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define void @pr104567(i8 %x, ptr %f) {
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; CHECK-LABEL: define void @pr104567(
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; CHECK-SAME: i8 [[X:%.*]], ptr [[F:%.*]]) {
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; CHECK-NEXT: [[START:.*:]]
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; CHECK-NEXT: [[Y:%.*]] = alloca [1 x i8], align 1
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 1, ptr nonnull [[Y]])
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; CHECK-NEXT: [[SWITCH_OFFSET:%.*]] = add nsw i8 [[X]], 4
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; CHECK-NEXT: store i8 [[SWITCH_OFFSET]], ptr [[Y]], align 1
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; CHECK-NEXT: call void [[F]](ptr [[Y]])
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 1, ptr nonnull [[Y]])
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; CHECK-NEXT: ret void
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;
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start:
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%y = alloca [1 x i8], align 1
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call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %y)
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switch i8 %x, label %default.unreachable [
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i8 0, label %bb4
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i8 1, label %bb3
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i8 2, label %bb2
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]
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default.unreachable:
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unreachable
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bb4:
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store i8 4, ptr %y, align 1
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br label %bb5
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bb3:
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store i8 5, ptr %y, align 1
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br label %bb5
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bb2:
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store i8 6, ptr %y, align 1
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br label %bb5
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bb5:
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call void %f(ptr %y)
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call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %y)
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ret void
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}
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define i64 @dont_make_div_variable(i64 noundef %x, i64 noundef %i) {
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; CHECK-LABEL: define i64 @dont_make_div_variable(
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; CHECK-SAME: i64 noundef [[X:%.*]], i64 noundef [[I:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: switch i64 [[I]], label %[[SW_DEFAULT:.*]] [
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; CHECK-NEXT: i64 9, label %[[SW_BB:.*]]
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; CHECK-NEXT: i64 10, label %[[SW_BB1:.*]]
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; CHECK-NEXT: i64 11, label %[[SW_BB3:.*]]
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; CHECK-NEXT: i64 12, label %[[SW_BB5:.*]]
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; CHECK-NEXT: ]
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; CHECK: [[SW_BB]]:
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; CHECK-NEXT: [[DIV:%.*]] = udiv i64 [[X]], 9
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; CHECK-NEXT: br label %[[RETURN:.*]]
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; CHECK: [[SW_BB1]]:
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; CHECK-NEXT: [[DIV2:%.*]] = udiv i64 [[X]], 10
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; CHECK-NEXT: br label %[[RETURN]]
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; CHECK: [[SW_BB3]]:
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; CHECK-NEXT: [[DIV4:%.*]] = udiv i64 [[X]], 11
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; CHECK-NEXT: br label %[[RETURN]]
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; CHECK: [[SW_BB5]]:
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; CHECK-NEXT: [[DIV7:%.*]] = udiv i64 [[X]], 12
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; CHECK-NEXT: br label %[[RETURN]]
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; CHECK: [[SW_DEFAULT]]:
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; CHECK-NEXT: unreachable
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; CHECK: [[RETURN]]:
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; CHECK-NEXT: [[DIV6:%.*]] = phi i64 [ [[DIV7]], %[[SW_BB5]] ], [ [[DIV4]], %[[SW_BB3]] ], [ [[DIV2]], %[[SW_BB1]] ], [ [[DIV]], %[[SW_BB]] ]
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; CHECK-NEXT: ret i64 [[DIV6]]
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;
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entry:
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switch i64 %i, label %sw.default [
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i64 9, label %sw.bb
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i64 10, label %sw.bb1
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i64 11, label %sw.bb3
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i64 12, label %sw.bb5
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]
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sw.bb:
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%div = udiv i64 %x, 9
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br label %return
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sw.bb1:
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%div2 = udiv i64 %x, 10
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br label %return
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sw.bb3:
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%div4 = udiv i64 %x, 11
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br label %return
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sw.bb5:
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%div6 = udiv i64 %x, 12
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br label %return
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sw.default:
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unreachable
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return:
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%retval.0 = phi i64 [ %div6, %sw.bb5 ], [ %div4, %sw.bb3 ], [ %div2, %sw.bb1 ], [ %div, %sw.bb ]
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ret i64 %retval.0
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}
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define i64 @okay_to_make_div_variable(i64 noundef %x, i64 noundef %i) {
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; CHECK-LABEL: define i64 @okay_to_make_div_variable(
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; CHECK-SAME: i64 noundef [[X:%.*]], i64 noundef [[I:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: [[SWITCH_TABLEIDX:%.*]] = sub nsw i64 [[I]], 9
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; CHECK-NEXT: [[SWITCH_OFFSET:%.*]] = add nsw i64 [[SWITCH_TABLEIDX]], 9
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; CHECK-NEXT: [[DIV6:%.*]] = udiv i64 [[SWITCH_OFFSET]], [[X]]
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; CHECK-NEXT: ret i64 [[DIV6]]
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;
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entry:
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switch i64 %i, label %sw.default [
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i64 9, label %sw.bb
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i64 10, label %sw.bb1
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i64 11, label %sw.bb3
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i64 12, label %sw.bb5
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]
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sw.bb:
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%div = udiv i64 9, %x
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br label %return
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sw.bb1:
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%div2 = udiv i64 10, %x
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br label %return
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sw.bb3:
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%div4 = udiv i64 11, %x
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br label %return
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sw.bb5:
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%div6 = udiv i64 12, %x
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br label %return
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sw.default:
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unreachable
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return:
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%retval.0 = phi i64 [ %div6, %sw.bb5 ], [ %div4, %sw.bb3 ], [ %div2, %sw.bb1 ], [ %div, %sw.bb ]
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ret i64 %retval.0
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}
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