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).
101 lines
4.5 KiB
LLVM
101 lines
4.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; Checks that move-auto-init can move instruction passed unclobbering memory
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; instructions.
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; RUN: opt < %s -S -passes='move-auto-init' -verify-memoryssa | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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define i32 @foo(i32 noundef %0, i32 noundef %1, i32 noundef %2) #0 {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: [[TMP4:%.*]] = alloca [100 x i8], align 16
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; CHECK-NEXT: [[TMP5:%.*]] = alloca [2 x i8], align 1
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; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds [100 x i8], ptr [[TMP4]], i64 0, i64 0
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr nonnull [[TMP4]]) #[[ATTR3:[0-9]+]]
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; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [2 x i8], ptr [[TMP5]], i64 0, i64 0
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr nonnull [[TMP5]]) #[[ATTR3]]
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; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds [2 x i8], ptr [[TMP5]], i64 0, i64 1
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; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP1:%.*]], 0
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; CHECK-NEXT: br i1 [[TMP9]], label [[TMP15:%.*]], label [[TMP10:%.*]]
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; CHECK: 10:
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; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(100) [[TMP6]], i8 -86, i64 100, i1 false), !annotation [[META0:![0-9]+]]
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; CHECK-NEXT: [[TMP11:%.*]] = sext i32 [[TMP0:%.*]] to i64
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; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds [100 x i8], ptr [[TMP4]], i64 0, i64 [[TMP11]]
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; CHECK-NEXT: store i8 12, ptr [[TMP12]], align 1
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; CHECK-NEXT: [[TMP13:%.*]] = load i8, ptr [[TMP6]], align 16
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; CHECK-NEXT: [[TMP14:%.*]] = sext i8 [[TMP13]] to i32
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; CHECK-NEXT: br label [[TMP22:%.*]]
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; CHECK: 15:
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; CHECK-NEXT: [[TMP16:%.*]] = icmp eq i32 [[TMP2:%.*]], 0
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; CHECK-NEXT: br i1 [[TMP16]], label [[TMP22]], label [[TMP17:%.*]]
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; CHECK: 17:
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; CHECK-NEXT: store i8 -86, ptr [[TMP7]], align 1, !annotation [[META0]]
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; CHECK-NEXT: store i8 -86, ptr [[TMP8]], align 1, !annotation [[META0]]
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; CHECK-NEXT: [[TMP18:%.*]] = sext i32 [[TMP0]] to i64
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; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds [2 x i8], ptr [[TMP5]], i64 0, i64 [[TMP18]]
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; CHECK-NEXT: store i8 12, ptr [[TMP19]], align 1
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; CHECK-NEXT: [[TMP20:%.*]] = load i8, ptr [[TMP7]], align 1
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; CHECK-NEXT: [[TMP21:%.*]] = sext i8 [[TMP20]] to i32
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; CHECK-NEXT: br label [[TMP22]]
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; CHECK: 22:
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; CHECK-NEXT: [[TMP23:%.*]] = phi i32 [ [[TMP14]], [[TMP10]] ], [ [[TMP21]], [[TMP17]] ], [ 0, [[TMP15]] ]
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr nonnull [[TMP5]]) #[[ATTR3]]
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr nonnull [[TMP4]]) #[[ATTR3]]
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; CHECK-NEXT: ret i32 [[TMP23]]
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;
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%4 = alloca [100 x i8], align 16
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%5 = alloca [2 x i8], align 1
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%6 = getelementptr inbounds [100 x i8], ptr %4, i64 0, i64 0
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call void @llvm.lifetime.start.p0(ptr nonnull %4) #3
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; This memset must move.
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call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(100) %6, i8 -86, i64 100, i1 false), !annotation !0
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%7 = getelementptr inbounds [2 x i8], ptr %5, i64 0, i64 0
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call void @llvm.lifetime.start.p0(ptr nonnull %5) #3
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; This store must move.
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store i8 -86, ptr %7, align 1, !annotation !0
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%8 = getelementptr inbounds [2 x i8], ptr %5, i64 0, i64 1
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; This store must move.
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store i8 -86, ptr %8, align 1, !annotation !0
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%9 = icmp eq i32 %1, 0
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br i1 %9, label %15, label %10
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10:
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%11 = sext i32 %0 to i64
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%12 = getelementptr inbounds [100 x i8], ptr %4, i64 0, i64 %11
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store i8 12, ptr %12, align 1
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%13 = load i8, ptr %6, align 16
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%14 = sext i8 %13 to i32
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br label %22
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15:
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%16 = icmp eq i32 %2, 0
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br i1 %16, label %22, label %17
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17:
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%18 = sext i32 %0 to i64
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%19 = getelementptr inbounds [2 x i8], ptr %5, i64 0, i64 %18
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store i8 12, ptr %19, align 1
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%20 = load i8, ptr %7, align 1
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%21 = sext i8 %20 to i32
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br label %22
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22:
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%23 = phi i32 [ %14, %10 ], [ %21, %17 ], [ 0, %15 ]
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call void @llvm.lifetime.end.p0(ptr nonnull %5) #3
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call void @llvm.lifetime.end.p0(ptr nonnull %4) #3
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ret i32 %23
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}
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declare void @llvm.lifetime.start.p0(ptr nocapture) #1
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declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2
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declare void @llvm.lifetime.end.p0(ptr nocapture) #1
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attributes #0 = { mustprogress nofree nosync nounwind readnone uwtable willreturn }
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attributes #1 = { argmemonly mustprogress nofree nosync nounwind willreturn }
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attributes #2 = { argmemonly mustprogress nofree nounwind willreturn writeonly }
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attributes #3 = { nounwind }
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!0 = !{!"auto-init"}
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