c23b4fbdbb
Now that #149310 has restricted lifetime intrinsics to only work on allocas, we can also drop the explicit size argument. Instead, the size is implied by the alloca. This removes the ability to only mark a prefix of an alloca alive/dead. We never used that capability, so we should remove the need to handle that possibility everywhere (though many key places, including stack coloring, did not actually respect this).
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(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(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(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(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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