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llvm-project/llvm/test/Analysis/StackSafetyAnalysis/lifetime.ll
Nikita Popov c23b4fbdbb
[IR] Remove size argument from lifetime intrinsics (#150248) 
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).
2025-08-08 11:09:34 +02:00

958 lines
25 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
call void @llvm.lifetime.start.p0(ptr %z)
; CHECK: call void @llvm.lifetime.start.p0(ptr %z)
; CHECK-NEXT: Alive: <z>
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x z>
call void @capture32(ptr %x)
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; CHECK-NEXT: Alive: <z>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <y z>
call void @capture32(ptr %y)
call void @llvm.lifetime.end.p0(ptr %y)
; CHECK: call void @llvm.lifetime.end.p0(ptr %y)
; CHECK-NEXT: Alive: <z>
call void @capture32(ptr %z)
call void @llvm.lifetime.end.p0(ptr %z)
; CHECK: call void @llvm.lifetime.end.p0(ptr %z)
; 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
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x y>
call void @capture32(ptr %x)
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; CHECK-NEXT: Alive: <y>
call void @capture32(ptr %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
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <x y>
call void @capture32(ptr %x)
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; CHECK-NEXT: Alive: <y>
call void @capture32(ptr %y)
call void @llvm.lifetime.end.p0(ptr %y)
; CHECK: call void @llvm.lifetime.end.p0(ptr %y)
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0(ptr %z)
; CHECK: call void @llvm.lifetime.start.p0(ptr %z)
; CHECK-NEXT: Alive: <z>
call void @capture64(ptr %z)
call void @llvm.lifetime.end.p0(ptr %z)
; CHECK: call void @llvm.lifetime.end.p0(ptr %z)
; 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
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <x y>
call void @llvm.lifetime.start.p0(ptr %z)
; CHECK: call void @llvm.lifetime.start.p0(ptr %z)
; CHECK-NEXT: Alive: <x y z>
call void @capture32(ptr %x)
call void @capture32(ptr %y)
call void @capture64(ptr %z)
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; CHECK-NEXT: Alive: <y z>
call void @llvm.lifetime.end.p0(ptr %y)
; CHECK: call void @llvm.lifetime.end.p0(ptr %y)
; CHECK-NEXT: Alive: <z>
call void @llvm.lifetime.end.p0(ptr %z)
; CHECK: call void @llvm.lifetime.end.p0(ptr %z)
; 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
call void @llvm.lifetime.start.p0(ptr %x1)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x1)
; CHECK-NEXT: Alive: <x1>
call void @llvm.lifetime.start.p0(ptr %x2)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x2)
; CHECK-NEXT: Alive: <x1 x2>
call void @capture64(ptr nonnull %x1)
call void @capture64(ptr 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>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <x1 x2 y>
call void @capture64(ptr 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>
call void @llvm.lifetime.start.p0(ptr %y1)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y1)
; CHECK-NEXT: Alive: <x1 x2 y y1>
call void @capture64(ptr nonnull %y1)
call void @llvm.lifetime.end.p0(ptr %y1)
; CHECK: call void @llvm.lifetime.end.p0(ptr %y1)
; CHECK-NEXT: Alive: <x1 x2 y>
br label %if.end
if.else: ; preds = %if.then
; CHECK: if.else:
; CHECK-NEXT: Alive: <x1 x2 y>
call void @llvm.lifetime.start.p0(ptr %y2)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y2)
; CHECK-NEXT: Alive: <x1 x2 y y2>
call void @capture64(ptr nonnull %y2)
call void @llvm.lifetime.end.p0(ptr %y2)
; CHECK: call void @llvm.lifetime.end.p0(ptr %y2)
; 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.p0(ptr %y)
; CHECK: call void @llvm.lifetime.end.p0(ptr %y)
; CHECK-NEXT: Alive: <x1 x2>
br label %if.end9
if.else4: ; preds = %entry
; CHECK: if.else4:
; CHECK-NEXT: Alive: <x1 x2>
%z.cast = bitcast ptr %z to ptr
; CHECK: %z.cast = bitcast ptr %z to ptr
; CHECK-NEXT: Alive: <x1 x2>
call void @llvm.lifetime.start.p0(ptr %z)
; CHECK: call void @llvm.lifetime.start.p0(ptr %z)
; CHECK-NEXT: Alive: <x1 x2 z>
call void @capture64(ptr 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>
call void @llvm.lifetime.start.p0(ptr %z1)
; CHECK: call void @llvm.lifetime.start.p0(ptr %z1)
; CHECK-NEXT: Alive: <x1 x2 z z1>
call void @capture64(ptr nonnull %z1)
call void @llvm.lifetime.end.p0(ptr %z1)
; CHECK: call void @llvm.lifetime.end.p0(ptr %z1)
; CHECK-NEXT: Alive: <x1 x2 z>
br label %if.end8
if.else7: ; preds = %if.else4
; CHECK: if.else7:
; CHECK-NEXT: Alive: <x1 x2 z>
call void @llvm.lifetime.start.p0(ptr %z2)
; CHECK: call void @llvm.lifetime.start.p0(ptr %z2)
; CHECK-NEXT: Alive: <x1 x2 z z2>
call void @capture64(ptr nonnull %z2)
call void @llvm.lifetime.end.p0(ptr %z2)
; CHECK: call void @llvm.lifetime.end.p0(ptr %z2)
; 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.p0(ptr %z)
; CHECK: call void @llvm.lifetime.end.p0(ptr %z)
; 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.p0(ptr %x2)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x2)
; CHECK-NEXT: Alive: <x1>
call void @llvm.lifetime.end.p0(ptr %x1)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x1)
; 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
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
call void @capture32(ptr %x)
br i1 %d, label %bb2, label %bb3
bb2: ; preds = %entry
; CHECK: bb2:
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <x y>
call void @capture32(ptr %y)
call void @llvm.lifetime.end.p0(ptr %y)
; CHECK: call void @llvm.lifetime.end.p0(ptr %y)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; CHECK-NEXT: Alive: <>
ret void
bb3: ; preds = %entry
; CHECK: bb3:
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; 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
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
call void @capture32(ptr %x)
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; CHECK-NEXT: Alive: <>
br i1 %d, label %bb2, label %bb3
bb2: ; preds = %entry
; CHECK: bb2:
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <y>
call void @capture32(ptr %y)
call void @llvm.lifetime.end.p0(ptr %y)
; CHECK: call void @llvm.lifetime.end.p0(ptr %y)
; 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
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
call void @capture32(ptr %x)
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; CHECK-NEXT: Alive: <>
br i1 %d, label %bb2, label %bb3
bb2: ; preds = %entry
; CHECK: bb2:
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <y>
call void @capture32(ptr %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
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
call void @capture32(ptr %x)
br i1 %d, label %bb2, label %bb3
bb2: ; preds = %entry
; CHECK: bb2:
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <y>
call void @capture32(ptr %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
call void @capture32(ptr %x)
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; 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.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <x y>
call void @capture32(ptr %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
call void @llvm.lifetime.start.p0(ptr %A.i)
; CHECK: call void @llvm.lifetime.start.p0(ptr %A.i)
; CHECK-NEXT: Alive: <A.i>
call void @llvm.lifetime.start.p0(ptr %B.i)
; CHECK: call void @llvm.lifetime.start.p0(ptr %B.i)
; CHECK-NEXT: Alive: <A.i B.i>
call void @capture100x32(ptr %A.i)
; CHECK: call void @capture100x32(ptr %A.i)
; CHECK-NEXT: Alive: <A.i B.i>
call void @capture100x32(ptr %B.i)
call void @llvm.lifetime.end.p0(ptr %A.i)
; CHECK: call void @llvm.lifetime.end.p0(ptr %A.i)
; CHECK-NEXT: Alive: <B.i>
call void @llvm.lifetime.end.p0(ptr %B.i)
; CHECK: call void @llvm.lifetime.end.p0(ptr %B.i)
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0(ptr %A.i1)
; CHECK: call void @llvm.lifetime.start.p0(ptr %A.i1)
; CHECK-NEXT: Alive: <A.i1>
call void @llvm.lifetime.start.p0(ptr %B.i2)
; CHECK: call void @llvm.lifetime.start.p0(ptr %B.i2)
; CHECK-NEXT: Alive: <A.i1 B.i2>
call void @capture100x32(ptr %A.i1)
call void @capture100x32(ptr %B.i2)
call void @llvm.lifetime.end.p0(ptr %A.i1)
; CHECK: call void @llvm.lifetime.end.p0(ptr %A.i1)
; CHECK-NEXT: Alive: <B.i2>
call void @llvm.lifetime.end.p0(ptr %B.i2)
; CHECK: call void @llvm.lifetime.end.p0(ptr %B.i2)
; 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.p0(ptr %buf1)
; CHECK: call void @llvm.lifetime.start.p0(ptr %buf1)
; CHECK-NEXT: Alive: <buf1>
call void @llvm.lifetime.end.p0(ptr %buf1)
; CHECK: call void @llvm.lifetime.end.p0(ptr %buf1)
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0(ptr %buf1)
; CHECK: call void @llvm.lifetime.start.p0(ptr %buf1)
; CHECK-NEXT: Alive: <buf1>
call void @llvm.lifetime.start.p0(ptr %buf2)
; CHECK: call void @llvm.lifetime.start.p0(ptr %buf2)
; CHECK-NEXT: Alive: <buf1 buf2>
call void @capture8(ptr %buf1)
call void @capture8(ptr %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
call void @llvm.lifetime.start.p0(ptr %A.i)
; CHECK: call void @llvm.lifetime.start.p0(ptr %A.i)
; CHECK-NEXT: Alive: <A.i A.i1 B.i2>
call void @llvm.lifetime.start.p0(ptr %B.i)
; CHECK: call void @llvm.lifetime.start.p0(ptr %B.i)
; CHECK-NEXT: Alive: <A.i A.i1 B.i B.i2>
call void @capture100x32(ptr %A.i)
call void @capture100x32(ptr %B.i)
call void @llvm.lifetime.end.p0(ptr %A.i)
; CHECK: call void @llvm.lifetime.end.p0(ptr %A.i)
; CHECK-NEXT: Alive: <A.i1 B.i B.i2>
call void @llvm.lifetime.end.p0(ptr %B.i)
; CHECK: call void @llvm.lifetime.end.p0(ptr %B.i)
; 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(ptr %A.i)
call void @capture100x32(ptr %B.i)
ret void
}
%struct.Klass = type { i32, i32 }
define i32 @shady_range(i32 %argc, ptr captures(none) %argv) {
; CHECK-LABEL: define i32 @shady_range(i32 %argc, ptr captures(none) %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
call void @llvm.lifetime.start.p0(ptr %a.i)
; CHECK: call void @llvm.lifetime.start.p0(ptr %a.i)
; CHECK-NEXT: Alive: <a.i>
call void @llvm.lifetime.start.p0(ptr %b.i)
; CHECK: call void @llvm.lifetime.start.p0(ptr %b.i)
; CHECK-NEXT: Alive: <a.i b.i>
call void @capture8(ptr %a.i)
call void @capture8(ptr %b.i)
%z3 = load i32, ptr %a.i, align 16
call void @llvm.lifetime.end.p0(ptr %a.i)
; CHECK: call void @llvm.lifetime.end.p0(ptr %a.i)
; CHECK-NEXT: Alive: <b.i>
call void @llvm.lifetime.end.p0(ptr %b.i)
; CHECK: call void @llvm.lifetime.end.p0(ptr %b.i)
; 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.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
br label %l2
l2: ; preds = %l2, %entry
; CHECK: l2:
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
call void @capture8(ptr %x)
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %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.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
br label %l2
l2: ; preds = %l2, %entry
; CHECK: l2:
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <x y>
call void @capture8(ptr %y)
call void @llvm.lifetime.end.p0(ptr %y)
; CHECK: call void @llvm.lifetime.end.p0(ptr %y)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
call void @capture8(ptr %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: <>
call void @llvm.lifetime.start.p0(ptr nonnull %a)
; CHECK: call void @llvm.lifetime.start.p0(ptr nonnull %a)
; CHECK-NEXT: Alive: <a>
tail call void @capture8(ptr %a)
call void @llvm.lifetime.end.p0(ptr nonnull %a)
; CHECK: call void @llvm.lifetime.end.p0(ptr nonnull %a)
; CHECK-NEXT: Alive: <>
br label %if.end
if.else: ; preds = %entry
; CHECK: if.else:
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0(ptr nonnull %b)
; CHECK: call void @llvm.lifetime.start.p0(ptr nonnull %b)
; CHECK-NEXT: Alive: <b>
tail call void @capture8(ptr %b)
call void @llvm.lifetime.end.p0(ptr nonnull %b)
; CHECK: call void @llvm.lifetime.end.p0(ptr nonnull %b)
; 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.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %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.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <y>
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %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.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <y>
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %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.p0(ptr %y)
br label %end
; CHECK: br label %end
; CHECK-NOT: Alive:
end:
; CHECK: end:
; CHECK-NEXT: Alive: <x y>
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.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; CHECK-NEXT: Alive: <>
ret void
}
define void @if_must1(i1 %a) {
; CHECK-LABEL: define void @if_must1
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:
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <>
call void @llvm.lifetime.end.p0(ptr %y)
; CHECK: call void @llvm.lifetime.end.p0(ptr %y)
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
br label %if.end
; CHECK: br label %if.end
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
if.else:
; CHECK: if.else:
; CHECK-NEXT: Alive: <>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <y>
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x y>
br label %if.then
; CHECK: br label %if.then
; CHECK-NEXT: Alive: <x y>
if.end:
; CHECK: if.end:
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
ret void
}
define void @if_must2(i1 %a) {
; CHECK-LABEL: define void @if_must2
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i8, align 4
%y = alloca i8, align 4
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
br i1 %a, label %if.then, label %if.else
; CHECK: br i1 %a, label %if.then, label %if.else
; CHECK-NEXT: Alive: <x>
if.then:
; CHECK: if.then:
; MAY-NEXT: Alive: <x>
; MUST-NEXT: Alive: <>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <y>
br label %if.end
; CHECK: br label %if.end
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <y>
if.else:
; CHECK: if.else:
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.end.p0(ptr %y)
; CHECK: call void @llvm.lifetime.end.p0(ptr %y)
; CHECK-NEXT: Alive: <x>
call void @llvm.lifetime.end.p0(ptr %x)
; CHECK: call void @llvm.lifetime.end.p0(ptr %x)
; CHECK-NEXT: Alive: <>
br label %if.then
; CHECK: br label %if.then
; CHECK-NEXT: Alive: <>
if.end:
; CHECK: if.end:
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <y>
ret void
}
define void @cycle(i1 %a) {
; CHECK-LABEL: define void @cycle
entry:
; CHECK: entry:
; CHECK-NEXT: Alive: <>
%x = alloca i8, align 4
%y = alloca i8, align 4
call void @llvm.lifetime.start.p0(ptr %x)
; CHECK: call void @llvm.lifetime.start.p0(ptr %x)
; CHECK-NEXT: Alive: <x>
br i1 %a, label %if.then, label %if.end
; CHECK: br i1 %a, label %if.then, label %if.end
; CHECK-NEXT: Alive: <x>
if.then:
; CHECK: if.then:
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <x>
call void @llvm.lifetime.start.p0(ptr %y)
; CHECK: call void @llvm.lifetime.start.p0(ptr %y)
; CHECK-NEXT: Alive: <x y>
br i1 %a, label %if.then, label %if.end
; CHECK: br i1 %a, label %if.then, label %if.end
; CHECK-NEXT: Alive: <x y>
if.end:
; CHECK: if.end:
; MAY-NEXT: Alive: <x y>
; MUST-NEXT: Alive: <x>
ret void
}
declare void @llvm.lifetime.start.p0(ptr captures(none))
declare void @llvm.lifetime.end.p0(ptr captures(none))
declare void @capture8(ptr)
declare void @capture32(ptr)
declare void @capture64(ptr)
declare void @capture100x32(ptr)
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