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clang-p2996/llvm/test/Analysis/StackSafetyAnalysis/lifetime.ll
Peter Collingbourne 6f85225ef3 StackLifetime: Remove asserts for multiple lifetime intrinsics. 
According to the langref, it is valid to have multiple consecutive
lifetime start or end intrinsics on the same object.

For llvm.lifetime.start:
"If ptr [...] is a stack object that is already alive, it simply
fills all bytes of the object with poison."

For llvm.lifetime.end:
"Calling llvm.lifetime.end on an already dead alloca is no-op."

However, we currently fail an assertion in such cases. I've observed
the assertion failure when the loop vectorization pass duplicates
the intrinsic.

We can conservatively handle these intrinsics by ignoring all but
the first one, which can be implemented by removing the assertions.

Differential Revision: https://reviews.llvm.org/D108337
2021-08-18 18:45:28 -07:00

960 lines
28 KiB
LLVM
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; RUN: opt -passes='print<stack-lifetime><may>' -disable-output %s 2>&1 | FileCheck %s --check-prefixes=CHECK,MAY
; RUN: opt -passes='print<stack-lifetime><must>' -disable-output %s 2>&1 | FileCheck %s --check-prefixes=CHECK,MUST
define void @f() {
; CHECK-LABEL: define void @f()
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i32, align 4
%y = alloca i32, align 4
; CHECK: %y = alloca i32, align 4
; CHECK-NEXT: Alive: <>
%z = alloca i32, align 4
%x0 = bitcast i32* %x to i8*
%y0 = bitcast i32* %y to i8*
%z0 = bitcast i32* %z to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %z0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %z0)
; CHECK-NEXT: Alive: <z>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <x z>
call void @capture32(i32* %x)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <z>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <y z>
call void @capture32(i32* %y)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <z>
call void @capture32(i32* %z)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %z0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %z0)
; CHECK-NEXT: Alive: <>
ret void
}
define void @no_markers() {
; CHECK-LABEL: define void @no_markers()
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <y>
%x = alloca i32, align 4
%y = alloca i32, align 4
%x0 = bitcast i32* %x to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <x y>
call void @capture32(i32* %x)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <y>
call void @capture32(i32* %y)
ret void
}
define void @g() {
; CHECK-LABEL: define void @g()
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i32, align 4
%y = alloca i32, align 4
%z = alloca i64, align 4
%x0 = bitcast i32* %x to i8*
%y0 = bitcast i32* %y to i8*
%z0 = bitcast i64* %z to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <x y>
call void @capture32(i32* %x)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <y>
call void @capture32(i32* %y)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %z0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %z0)
; CHECK-NEXT: Alive: <z>
call void @capture64(i64* %z)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %z0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %z0)
; CHECK-NEXT: Alive: <>
ret void
; CHECK: ret void
; CHECK-NEXT: Alive: <>
}
define void @h() {
; CHECK-LABEL: define void @h()
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i32, align 16
; CHECK: %x = alloca i32, align 16
; CHECK-NEXT: Alive: <>
%z = alloca i64, align 4
%y = alloca i32, align 4
%x0 = bitcast i32* %x to i8*
%y0 = bitcast i32* %y to i8*
%z0 = bitcast i64* %z to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <x y>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %z0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %z0)
; CHECK-NEXT: Alive: <x y z>
call void @capture32(i32* %x)
call void @capture32(i32* %y)
call void @capture64(i64* %z)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <y z>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <z>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %z0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %z0)
; CHECK-NEXT: Alive: <>
ret void
}
define void @i(i1 zeroext %a, i1 zeroext %b) {
; CHECK-LABEL: define void @i(i1 zeroext %a, i1 zeroext %b)
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x1 = alloca i64, align 8
%x2 = alloca i64, align 8
%y = alloca i64, align 8
%y1 = alloca i64, align 8
%y2 = alloca i64, align 8
%z = alloca i64, align 8
%z1 = alloca i64, align 8
%z2 = alloca i64, align 8
%0 = bitcast i64* %x1 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %0)
; CHECK-NEXT: Alive: <x1>
%1 = bitcast i64* %x2 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %1)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %1)
; CHECK-NEXT: Alive: <x1 x2>
call void @capture64(i64* nonnull %x1)
call void @capture64(i64* nonnull %x2)
br i1 %a, label %if.then, label %if.else4
; CHECK: br i1 %a, label %if.then, label %if.else4
; CHECK-NEXT: Alive: <x1 x2>
if.then: ; preds = %entry
; CHECK: if.then:
; CHECK-NEXT: Alive: <x1 x2>
%2 = bitcast i64* %y to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %2)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %2)
; CHECK-NEXT: Alive: <x1 x2 y>
call void @capture64(i64* nonnull %y)
br i1 %b, label %if.then3, label %if.else
if.then3: ; preds = %if.then
; CHECK: if.then3:
; CHECK-NEXT: Alive: <x1 x2 y>
%3 = bitcast i64* %y1 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %3)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %3)
; CHECK-NEXT: Alive: <x1 x2 y y1>
call void @capture64(i64* nonnull %y1)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %3)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %3)
; CHECK-NEXT: Alive: <x1 x2 y>
br label %if.end
if.else: ; preds = %if.then
; CHECK: if.else:
; CHECK-NEXT: Alive: <x1 x2 y>
%4 = bitcast i64* %y2 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %4)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %4)
; CHECK-NEXT: Alive: <x1 x2 y y2>
call void @capture64(i64* nonnull %y2)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %4)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %4)
; CHECK-NEXT: Alive: <x1 x2 y>
br label %if.end
if.end: ; preds = %if.else, %if.then3
; CHECK: if.end:
; CHECK-NEXT: Alive: <x1 x2 y>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %2)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %2)
; CHECK-NEXT: Alive: <x1 x2>
br label %if.end9
if.else4: ; preds = %entry
; CHECK: if.else4:
; CHECK-NEXT: Alive: <x1 x2>
%5 = bitcast i64* %z to i8*
; CHECK: %5 = bitcast i64* %z to i8*
; CHECK-NEXT: Alive: <x1 x2>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %5)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %5)
; CHECK-NEXT: Alive: <x1 x2 z>
call void @capture64(i64* nonnull %z)
br i1 %b, label %if.then6, label %if.else7
if.then6: ; preds = %if.else4
; CHECK: if.then6:
; CHECK-NEXT: Alive: <x1 x2 z>
%6 = bitcast i64* %z1 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %6)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %6)
; CHECK-NEXT: Alive: <x1 x2 z z1>
call void @capture64(i64* nonnull %z1)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %6)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %6)
; CHECK-NEXT: Alive: <x1 x2 z>
br label %if.end8
if.else7: ; preds = %if.else4
; CHECK: if.else7:
; CHECK-NEXT: Alive: <x1 x2 z>
%7 = bitcast i64* %z2 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %7)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %7)
; CHECK-NEXT: Alive: <x1 x2 z z2>
call void @capture64(i64* nonnull %z2)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %7)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %7)
; CHECK-NEXT: Alive: <x1 x2 z>
br label %if.end8
if.end8: ; preds = %if.else7, %if.then6
; CHECK: if.end8:
; CHECK-NEXT: Alive: <x1 x2 z>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %5)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %5)
; CHECK-NEXT: Alive: <x1 x2>
br label %if.end9
if.end9: ; preds = %if.end8, %if.end
; CHECK: if.end9:
; CHECK-NEXT: Alive: <x1 x2>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %1)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %1)
; CHECK-NEXT: Alive: <x1>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %0)
; CHECK-NEXT: Alive: <>
ret void
}
define void @no_merge1(i1 %d) {
; CHECK-LABEL: define void @no_merge1(i1 %d)
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i32, align 4
%y = alloca i32, align 4
%x0 = bitcast i32* %x to i8*
%y0 = bitcast i32* %y to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <x>
call void @capture32(i32* %x)
br i1 %d, label %bb2, label %bb3
bb2: ; preds = %entry
; CHECK: bb2:
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <x y>
call void @capture32(i32* %y)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <>
ret void
bb3: ; preds = %entry
; CHECK: bb3:
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <>
ret void
}
define void @merge1(i1 %d) {
; CHECK-LABEL: define void @merge1(i1 %d)
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i32, align 4
%y = alloca i32, align 4
%x0 = bitcast i32* %x to i8*
%y0 = bitcast i32* %y to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <x>
call void @capture32(i32* %x)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <>
br i1 %d, label %bb2, label %bb3
bb2: ; preds = %entry
; CHECK: bb2:
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <y>
call void @capture32(i32* %y)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <>
ret void
bb3: ; preds = %entry
; CHECK: bb3:
; CHECK-NEXT: Alive: <>
ret void
}
define void @merge2_noend(i1 %d) {
; CHECK-LABEL: define void @merge2_noend(i1 %d)
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i32, align 4
%y = alloca i32, align 4
%x0 = bitcast i32* %x to i8*
%y0 = bitcast i32* %y to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <x>
call void @capture32(i32* %x)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <>
br i1 %d, label %bb2, label %bb3
bb2: ; preds = %entry
; CHECK: bb2:
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <y>
call void @capture32(i32* %y)
ret void
bb3: ; preds = %entry
; CHECK: bb3:
; CHECK-NEXT: Alive: <>
ret void
}
define void @merge3_noend(i1 %d) {
; CHECK-LABEL: define void @merge3_noend(i1 %d)
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i32, align 4
%y = alloca i32, align 4
%x0 = bitcast i32* %x to i8*
%y0 = bitcast i32* %y to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <x>
call void @capture32(i32* %x)
br i1 %d, label %bb2, label %bb3
bb2: ; preds = %entry
; CHECK: bb2:
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <y>
call void @capture32(i32* %y)
ret void
bb3: ; preds = %entry
; CHECK: bb3:
; CHECK-NEXT: Alive: <x>
ret void
}
define void @nomerge4_nostart(i1 %d) {
; CHECK-LABEL: define void @nomerge4_nostart(i1 %d)
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <x>
%x = alloca i32, align 4
%y = alloca i32, align 4
%x0 = bitcast i32* %x to i8*
%y0 = bitcast i32* %y to i8*
call void @capture32(i32* %x)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %x0)
; CHECK-NEXT: Alive: <x>
br i1 %d, label %bb2, label %bb3
bb2: ; preds = %entry
; CHECK: bb2:
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %y0)
; CHECK-NEXT: Alive: <x y>
call void @capture32(i32* %y)
ret void
bb3: ; preds = %entry
; CHECK: bb3:
; CHECK-NEXT: Alive: <x>
ret void
}
define void @array_merge() {
; CHECK-LABEL: define void @array_merge()
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%A.i1 = alloca [100 x i32], align 4
%B.i2 = alloca [100 x i32], align 4
%A.i = alloca [100 x i32], align 4
%B.i = alloca [100 x i32], align 4
%0 = bitcast [100 x i32]* %A.i to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %0)
; CHECK-NEXT: Alive: <A.i>
%1 = bitcast [100 x i32]* %B.i to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %1)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %1)
; CHECK-NEXT: Alive: <A.i B.i>
call void @capture100x32([100 x i32]* %A.i)
; CHECK: call void @capture100x32([100 x i32]* %A.i)
; CHECK-NEXT: Alive: <A.i B.i>
call void @capture100x32([100 x i32]* %B.i)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %0)
; CHECK-NEXT: Alive: <B.i>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %1)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %1)
; CHECK-NEXT: Alive: <>
%2 = bitcast [100 x i32]* %A.i1 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %2)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %2)
; CHECK-NEXT: Alive: <A.i1>
%3 = bitcast [100 x i32]* %B.i2 to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %3)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %3)
; CHECK-NEXT: Alive: <A.i1 B.i2>
call void @capture100x32([100 x i32]* %A.i1)
call void @capture100x32([100 x i32]* %B.i2)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %2)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %2)
; CHECK-NEXT: Alive: <B.i2>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %3)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %3)
; CHECK-NEXT: Alive: <>
ret void
}
define void @myCall_pr15707() {
; CHECK-LABEL: define void @myCall_pr15707()
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%buf1 = alloca i8, i32 100000, align 16
%buf2 = alloca i8, i32 100000, align 16
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %buf1)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %buf1)
; CHECK-NEXT: Alive: <buf1>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %buf1)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %buf1)
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %buf1)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %buf1)
; CHECK-NEXT: Alive: <buf1>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %buf2)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %buf2)
; CHECK-NEXT: Alive: <buf1 buf2>
call void @capture8(i8* %buf1)
call void @capture8(i8* %buf2)
ret void
}
define void @bad_range() {
; CHECK-LABEL: define void @bad_range()
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <A.i1 B.i2>
%A.i1 = alloca [100 x i32], align 4
%B.i2 = alloca [100 x i32], align 4
%A.i = alloca [100 x i32], align 4
%B.i = alloca [100 x i32], align 4
%0 = bitcast [100 x i32]* %A.i to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %0)
; CHECK-NEXT: Alive: <A.i A.i1 B.i2>
%1 = bitcast [100 x i32]* %B.i to i8*
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %1)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %1)
; CHECK-NEXT: Alive: <A.i A.i1 B.i B.i2>
call void @capture100x32([100 x i32]* %A.i)
call void @capture100x32([100 x i32]* %B.i)
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %0)
; CHECK-NEXT: Alive: <A.i1 B.i B.i2>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %1)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %1)
; CHECK-NEXT: Alive: <A.i1 B.i2>
br label %block2
block2: ; preds = %entry
; CHECK: block2:
; CHECK-NEXT: Alive: <A.i1 B.i2>
call void @capture100x32([100 x i32]* %A.i)
call void @capture100x32([100 x i32]* %B.i)
ret void
}
%struct.Klass = type { i32, i32 }
define i32 @shady_range(i32 %argc, i8** nocapture %argv) {
; CHECK-LABEL: define i32 @shady_range(i32 %argc, i8** nocapture %argv)
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%a.i = alloca [4 x %struct.Klass], align 16
%b.i = alloca [4 x %struct.Klass], align 16
%a8 = bitcast [4 x %struct.Klass]* %a.i to i8*
%b8 = bitcast [4 x %struct.Klass]* %b.i to i8*
%z2 = getelementptr inbounds [4 x %struct.Klass], [4 x %struct.Klass]* %a.i, i64 0, i64 0, i32 0
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %a8)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %a8)
; CHECK-NEXT: Alive: <a.i>
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b8)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 -1, i8* %b8)
; CHECK-NEXT: Alive: <a.i b.i>
call void @capture8(i8* %a8)
call void @capture8(i8* %b8)
%z3 = load i32, i32* %z2, align 16
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %a8)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %a8)
; CHECK-NEXT: Alive: <b.i>
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b8)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 -1, i8* %b8)
; CHECK-NEXT: Alive: <>
ret i32 %z3
}
define void @end_loop() {
; CHECK-LABEL: define void @end_loop()
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i8, align 4
call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK-NEXT: Alive: <x>
br label %l2
l2: ; preds = %l2, %entry
; CHECK: l2:
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
call void @capture8(i8* %x)
call void @llvm.lifetime.end.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 1, i8* %x)
; CHECK-NEXT: Alive: <>
br label %l2
}
define void @start_loop() {
; CHECK-LABEL: define void @start_loop()
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i8, align 4
%y = alloca i8, align 4
call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK-NEXT: Alive: <x>
br label %l2
l2: ; preds = %l2, %entry
; CHECK: l2:
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0i8(i64 1, i8* %y)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %y)
; CHECK-NEXT: Alive: <x y>
call void @capture8(i8* %y)
call void @llvm.lifetime.end.p0i8(i64 1, i8* %y)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 1, i8* %y)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK-NEXT: Alive: <x>
call void @capture8(i8* %x)
br label %l2
}
%struct.char_array = type { [500 x i8] }
define dso_local void @gep_test(i32 %cond) {
; CHECK-LABEL: define dso_local void @gep_test
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%a = alloca %struct.char_array, align 8
%b = alloca %struct.char_array, align 8
%tobool.not = icmp eq i32 %cond, 0
br i1 %tobool.not, label %if.else, label %if.then
if.then: ; preds = %entry
; CHECK: if.then:
; CHECK-NEXT: Alive: <>
%0 = getelementptr inbounds %struct.char_array, %struct.char_array* %a, i64 0, i32 0, i64 0
call void @llvm.lifetime.start.p0i8(i64 500, i8* nonnull %0)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 500, i8* nonnull %0)
; CHECK-NEXT: Alive: <a>
tail call void @capture8(i8* %0)
call void @llvm.lifetime.end.p0i8(i64 500, i8* nonnull %0)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 500, i8* nonnull %0)
; CHECK-NEXT: Alive: <>
br label %if.end
if.else: ; preds = %entry
; CHECK: if.else:
; CHECK-NEXT: Alive: <>
%1 = getelementptr inbounds %struct.char_array, %struct.char_array* %b, i64 0, i32 0, i64 0
call void @llvm.lifetime.start.p0i8(i64 500, i8* nonnull %1)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 500, i8* nonnull %1)
; CHECK-NEXT: Alive: <b>
tail call void @capture8(i8* %1)
call void @llvm.lifetime.end.p0i8(i64 500, i8* nonnull %1)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 500, i8* nonnull %1)
; CHECK-NEXT: Alive: <>
br label %if.end
if.end: ; preds = %if.else, %if.then
; CHECK: if.end:
; CHECK-NEXT: Alive: <>
ret void
}
define void @if_must(i1 %a) {
; CHECK-LABEL: define void @if_must
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i8, align 4
%y = alloca i8, align 4
br i1 %a, label %if.then, label %if.else
; CHECK: br i1 %a, label %if.then, label %if.else
; CHECK-NEXT: Alive: <>
if.then:
; CHECK: if.then:
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0i8(i64 1, i8* %y)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %y)
; CHECK-NEXT: Alive: <y>
br label %if.end
; CHECK: br label %if.end
; CHECK-NEXT: Alive: <y>
if.else:
; CHECK: if.else:
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0i8(i64 1, i8* %y)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %y)
; CHECK-NEXT: Alive: <y>
call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK-NEXT: Alive: <x y>
br label %if.end
; CHECK: br label %if.end
; CHECK-NEXT: Alive: <x y>
if.end:
; CHECK: if.end:
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <y>
ret void
}
define void @unreachable() {
; CHECK-LABEL: define void @unreachable
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i8, align 4
%y = alloca i8, align 4
call void @llvm.lifetime.start.p0i8(i64 1, i8* %y)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %y)
; CHECK-NEXT: Alive: <y>
call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK-NEXT: Alive: <x y>
br label %end
; CHECK: br label %end
; CHECK-NEXT: Alive: <x y>
dead:
; CHECK: dead:
; CHECK-NOT: Alive:
call void @llvm.lifetime.start.p0i8(i64 4, i8* %y)
br label %end
; CHECK: br label %end
; CHECK-NOT: Alive:
end:
; CHECK: end:
; CHECK-NEXT: Alive: <x y>
ret void
}
define void @non_alloca(i8* %p) {
; CHECK-LABEL: define void @non_alloca
entry:
; CHECK: entry:
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <>
%x = alloca i8, align 4
%y = alloca i8, align 4
call void @llvm.lifetime.start.p0i8(i64 4, i8* %p)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 4, i8* %p)
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <>
call void @llvm.lifetime.start.p0i8(i64 4, i8* %x)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 4, i8* %x)
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <>
call void @llvm.lifetime.end.p0i8(i64 4, i8* %p)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 4, i8* %p)
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <>
ret void
}
define void @select_alloca(i1 %v) {
; CHECK-LABEL: define void @select_alloca
entry:
; CHECK: entry:
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <>
%x = alloca i8, align 4
%y = alloca i8, align 4
%cxcy = select i1 %v, i8* %x, i8* %y
call void @llvm.lifetime.start.p0i8(i64 1, i8* %cxcy)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %cxcy)
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <>
call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <>
call void @llvm.lifetime.end.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 1, i8* %x)
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <>
ret void
}
define void @alloca_offset() {
; CHECK-LABEL: define void @alloca_offset
entry:
; CHECK: entry:
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
%x = alloca [5 x i32], align 4
%x2 = getelementptr [5 x i32], [5 x i32]* %x, i64 0, i64 1
call void @llvm.lifetime.start.p0i32(i64 20, i32* %x2)
; CHECK: call void @llvm.lifetime.start.p0i32(i64 20, i32* %x2)
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
call void @llvm.lifetime.end.p0i32(i64 20, i32* %x2)
; CHECK: call void @llvm.lifetime.end.p0i32(i64 20, i32* %x2)
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
ret void
}
define void @alloca_size() {
; CHECK-LABEL: define void @alloca_size
entry:
; CHECK: entry:
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
%x = alloca [5 x i32], align 4
%x2 = getelementptr [5 x i32], [5 x i32]* %x, i64 0, i64 0
call void @llvm.lifetime.start.p0i32(i64 15, i32* %x2)
; CHECK: call void @llvm.lifetime.start.p0i32(i64 15, i32* %x2)
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
call void @llvm.lifetime.end.p0i32(i64 15, i32* %x2)
; CHECK: call void @llvm.lifetime.end.p0i32(i64 15, i32* %x2)
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
ret void
}
define void @multiple_start_end() {
; CHECK-LABEL: define void @multiple_start_end
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i8
call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.start.p0i8(i64 1, i8* %x)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.end.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 1, i8* %x)
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.end.p0i8(i64 1, i8* %x)
; CHECK: call void @llvm.lifetime.end.p0i8(i64 1, i8* %x)
; CHECK-NEXT: Alive: <>
ret void
}
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
declare void @llvm.lifetime.start.p0i32(i64, i32* nocapture)
declare void @llvm.lifetime.end.p0i32(i64, i32* nocapture)
declare void @capture8(i8*)
declare void @capture32(i32*)
declare void @capture64(i64*)
declare void @capture100x32([100 x i32]*)
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