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|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt -passes=function-attrs -S < %s | FileCheck %s
@g = global ptr null ; <ptr> [#uses=1]
define ptr @c1(ptr %q) {
; CHECK-LABEL: define ptr @c1
; CHECK-SAME: (ptr readnone returned [[Q:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: ret ptr [[Q]]
;
ret ptr %q
}
; It would also be acceptable to mark %q as readnone. Update @c3 too.
define void @c2(ptr %q) {
; CHECK-LABEL: define void @c2
; CHECK-SAME: (ptr [[Q:%.*]]) #[[ATTR1:[0-9]+]] {
; CHECK-NEXT: store ptr [[Q]], ptr @g, align 8
; CHECK-NEXT: ret void
;
store ptr %q, ptr @g
ret void
}
define void @c3(ptr %q) {
; CHECK-LABEL: define void @c3
; CHECK-SAME: (ptr [[Q:%.*]]) #[[ATTR2:[0-9]+]] {
; CHECK-NEXT: call void @c2(ptr [[Q]])
; CHECK-NEXT: ret void
;
call void @c2(ptr %q)
ret void
}
define i1 @c4(ptr %q, i32 %bitno) {
; CHECK-LABEL: define i1 @c4
; CHECK-SAME: (ptr [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: [[TMP:%.*]] = ptrtoint ptr [[Q]] to i32
; CHECK-NEXT: [[TMP2:%.*]] = lshr i32 [[TMP]], [[BITNO]]
; CHECK-NEXT: [[BIT:%.*]] = trunc i32 [[TMP2]] to i1
; CHECK-NEXT: br i1 [[BIT]], label [[L1:%.*]], label [[L0:%.*]]
; CHECK: l0:
; CHECK-NEXT: ret i1 false
; CHECK: l1:
; CHECK-NEXT: ret i1 true
;
%tmp = ptrtoint ptr %q to i32
%tmp2 = lshr i32 %tmp, %bitno
%bit = trunc i32 %tmp2 to i1
br i1 %bit, label %l1, label %l0
l0:
ret i1 0 ; escaping value not caught by def-use chaining.
l1:
ret i1 1 ; escaping value not caught by def-use chaining.
}
; c4b is c4 but without the escaping part
define i1 @c4b(ptr %q, i32 %bitno) {
; CHECK-LABEL: define i1 @c4b
; CHECK-SAME: (ptr [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: [[TMP:%.*]] = ptrtoint ptr [[Q]] to i32
; CHECK-NEXT: [[TMP2:%.*]] = lshr i32 [[TMP]], [[BITNO]]
; CHECK-NEXT: [[BIT:%.*]] = trunc i32 [[TMP2]] to i1
; CHECK-NEXT: br i1 [[BIT]], label [[L1:%.*]], label [[L0:%.*]]
; CHECK: l0:
; CHECK-NEXT: ret i1 false
; CHECK: l1:
; CHECK-NEXT: ret i1 false
;
%tmp = ptrtoint ptr %q to i32
%tmp2 = lshr i32 %tmp, %bitno
%bit = trunc i32 %tmp2 to i1
br i1 %bit, label %l1, label %l0
l0:
ret i1 0 ; not escaping!
l1:
ret i1 0 ; not escaping!
}
@lookup_table = global [2 x i1] [ i1 0, i1 1 ]
define i1 @c5(ptr %q, i32 %bitno) {
; CHECK-LABEL: define i1 @c5
; CHECK-SAME: (ptr [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR3:[0-9]+]] {
; CHECK-NEXT: [[TMP:%.*]] = ptrtoint ptr [[Q]] to i32
; CHECK-NEXT: [[TMP2:%.*]] = lshr i32 [[TMP]], [[BITNO]]
; CHECK-NEXT: [[BIT:%.*]] = and i32 [[TMP2]], 1
; CHECK-NEXT: [[LOOKUP:%.*]] = getelementptr [2 x i1], ptr @lookup_table, i32 0, i32 [[BIT]]
; CHECK-NEXT: [[VAL:%.*]] = load i1, ptr [[LOOKUP]], align 1
; CHECK-NEXT: ret i1 [[VAL]]
;
%tmp = ptrtoint ptr %q to i32
%tmp2 = lshr i32 %tmp, %bitno
%bit = and i32 %tmp2, 1
; subtle escape mechanism follows
%lookup = getelementptr [2 x i1], ptr @lookup_table, i32 0, i32 %bit
%val = load i1, ptr %lookup
ret i1 %val
}
declare void @throw_if_bit_set(ptr, i8) readonly
define i1 @c6(ptr %q, i8 %bit) personality ptr @__gxx_personality_v0 {
; CHECK-LABEL: define i1 @c6
; CHECK-SAME: (ptr readonly [[Q:%.*]], i8 [[BIT:%.*]]) #[[ATTR5:[0-9]+]] personality ptr @__gxx_personality_v0 {
; CHECK-NEXT: invoke void @throw_if_bit_set(ptr [[Q]], i8 [[BIT]])
; CHECK-NEXT: to label [[RET0:%.*]] unwind label [[RET1:%.*]]
; CHECK: ret0:
; CHECK-NEXT: ret i1 false
; CHECK: ret1:
; CHECK-NEXT: [[EXN:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT: cleanup
; CHECK-NEXT: ret i1 true
;
invoke void @throw_if_bit_set(ptr %q, i8 %bit)
to label %ret0 unwind label %ret1
ret0:
ret i1 0
ret1:
%exn = landingpad {ptr, i32}
cleanup
ret i1 1
}
declare i32 @__gxx_personality_v0(...)
define ptr @lookup_bit(ptr %q, i32 %bitno) readnone nounwind {
; CHECK-LABEL: define nonnull ptr @lookup_bit
; CHECK-SAME: (ptr [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: [[TMP:%.*]] = ptrtoint ptr [[Q]] to i32
; CHECK-NEXT: [[TMP2:%.*]] = lshr i32 [[TMP]], [[BITNO]]
; CHECK-NEXT: [[BIT:%.*]] = and i32 [[TMP2]], 1
; CHECK-NEXT: [[LOOKUP:%.*]] = getelementptr [2 x i1], ptr @lookup_table, i32 0, i32 [[BIT]]
; CHECK-NEXT: ret ptr [[LOOKUP]]
;
%tmp = ptrtoint ptr %q to i32
%tmp2 = lshr i32 %tmp, %bitno
%bit = and i32 %tmp2, 1
%lookup = getelementptr [2 x i1], ptr @lookup_table, i32 0, i32 %bit
ret ptr %lookup
}
define i1 @c7(ptr %q, i32 %bitno) {
; CHECK-LABEL: define i1 @c7
; CHECK-SAME: (ptr readonly [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR6:[0-9]+]] {
; CHECK-NEXT: [[PTR:%.*]] = call ptr @lookup_bit(ptr [[Q]], i32 [[BITNO]])
; CHECK-NEXT: [[VAL:%.*]] = load i1, ptr [[PTR]], align 1
; CHECK-NEXT: ret i1 [[VAL]]
;
%ptr = call ptr @lookup_bit(ptr %q, i32 %bitno)
%val = load i1, ptr %ptr
ret i1 %val
}
define i32 @nc1(ptr %q, ptr %p, i1 %b) {
; CHECK-LABEL: define i32 @nc1
; CHECK-SAME: (ptr [[Q:%.*]], ptr nocapture [[P:%.*]], i1 [[B:%.*]]) #[[ATTR7:[0-9]+]] {
; CHECK-NEXT: e:
; CHECK-NEXT: br label [[L:%.*]]
; CHECK: l:
; CHECK-NEXT: [[X:%.*]] = phi ptr [ [[P]], [[E:%.*]] ]
; CHECK-NEXT: [[Y:%.*]] = phi ptr [ [[Q]], [[E]] ]
; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[B]], ptr [[X]], ptr [[Y]]
; CHECK-NEXT: [[VAL:%.*]] = load i32, ptr [[TMP2]], align 4
; CHECK-NEXT: store i32 0, ptr [[X]], align 4
; CHECK-NEXT: store ptr [[Y]], ptr @g, align 8
; CHECK-NEXT: ret i32 [[VAL]]
;
e:
br label %l
l:
%x = phi ptr [ %p, %e ]
%y = phi ptr [ %q, %e ]
%tmp2 = select i1 %b, ptr %x, ptr %y
%val = load i32, ptr %tmp2 ; <i32> [#uses=1]
store i32 0, ptr %x
store ptr %y, ptr @g
ret i32 %val
}
define i32 @nc1_addrspace(ptr %q, ptr addrspace(1) %p, i1 %b) {
; CHECK-LABEL: define i32 @nc1_addrspace
; CHECK-SAME: (ptr [[Q:%.*]], ptr addrspace(1) nocapture [[P:%.*]], i1 [[B:%.*]]) #[[ATTR7]] {
; CHECK-NEXT: e:
; CHECK-NEXT: br label [[L:%.*]]
; CHECK: l:
; CHECK-NEXT: [[X:%.*]] = phi ptr addrspace(1) [ [[P]], [[E:%.*]] ]
; CHECK-NEXT: [[Y:%.*]] = phi ptr [ [[Q]], [[E]] ]
; CHECK-NEXT: [[TMP:%.*]] = addrspacecast ptr addrspace(1) [[X]] to ptr
; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[B]], ptr [[TMP]], ptr [[Y]]
; CHECK-NEXT: [[VAL:%.*]] = load i32, ptr [[TMP2]], align 4
; CHECK-NEXT: store i32 0, ptr [[TMP]], align 4
; CHECK-NEXT: store ptr [[Y]], ptr @g, align 8
; CHECK-NEXT: ret i32 [[VAL]]
;
e:
br label %l
l:
%x = phi ptr addrspace(1) [ %p, %e ]
%y = phi ptr [ %q, %e ]
%tmp = addrspacecast ptr addrspace(1) %x to ptr ; <ptr> [#uses=2]
%tmp2 = select i1 %b, ptr %tmp, ptr %y
%val = load i32, ptr %tmp2 ; <i32> [#uses=1]
store i32 0, ptr %tmp
store ptr %y, ptr @g
ret i32 %val
}
define void @nc2(ptr %p, ptr %q) {
; CHECK-LABEL: define void @nc2
; CHECK-SAME: (ptr nocapture [[P:%.*]], ptr [[Q:%.*]]) #[[ATTR7]] {
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @nc1(ptr [[Q]], ptr [[P]], i1 false)
; CHECK-NEXT: ret void
;
%1 = call i32 @nc1(ptr %q, ptr %p, i1 0) ; <i32> [#uses=0]
ret void
}
define void @nc3(ptr %p) {
; CHECK-LABEL: define void @nc3
; CHECK-SAME: (ptr nocapture readonly [[P:%.*]]) {
; CHECK-NEXT: call void [[P]]()
; CHECK-NEXT: ret void
;
call void %p()
ret void
}
declare void @external(ptr) readonly nounwind
define void @nc4(ptr %p) {
; CHECK-LABEL: define void @nc4
; CHECK-SAME: (ptr nocapture readonly [[P:%.*]]) #[[ATTR9:[0-9]+]] {
; CHECK-NEXT: call void @external(ptr [[P]])
; CHECK-NEXT: ret void
;
call void @external(ptr %p)
ret void
}
define void @nc5(ptr %f, ptr %p) {
; CHECK-LABEL: define void @nc5
; CHECK-SAME: (ptr nocapture readonly [[F:%.*]], ptr nocapture [[P:%.*]]) {
; CHECK-NEXT: call void [[F]](ptr [[P]]) #[[ATTR8:[0-9]+]]
; CHECK-NEXT: call void [[F]](ptr nocapture [[P]])
; CHECK-NEXT: ret void
;
call void %f(ptr %p) readonly nounwind
call void %f(ptr nocapture %p)
ret void
}
; It would be acceptable to add readnone to %y1_1 and %y1_2.
define void @test1_1(ptr %x1_1, ptr %y1_1, i1 %c) {
; CHECK-LABEL: define void @test1_1
; CHECK-SAME: (ptr nocapture readnone [[X1_1:%.*]], ptr [[Y1_1:%.*]], i1 [[C:%.*]]) #[[ATTR10:[0-9]+]] {
; CHECK-NEXT: [[TMP1:%.*]] = call ptr @test1_2(ptr [[X1_1]], ptr [[Y1_1]], i1 [[C]])
; CHECK-NEXT: store ptr null, ptr @g, align 8
; CHECK-NEXT: ret void
;
call ptr @test1_2(ptr %x1_1, ptr %y1_1, i1 %c)
store ptr null, ptr @g
ret void
}
define ptr @test1_2(ptr %x1_2, ptr %y1_2, i1 %c) {
; CHECK-LABEL: define ptr @test1_2
; CHECK-SAME: (ptr nocapture readnone [[X1_2:%.*]], ptr returned [[Y1_2:%.*]], i1 [[C:%.*]]) #[[ATTR10]] {
; CHECK-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; CHECK: t:
; CHECK-NEXT: call void @test1_1(ptr [[X1_2]], ptr [[Y1_2]], i1 [[C]])
; CHECK-NEXT: store ptr null, ptr @g, align 8
; CHECK-NEXT: br label [[F]]
; CHECK: f:
; CHECK-NEXT: ret ptr [[Y1_2]]
;
br i1 %c, label %t, label %f
t:
call void @test1_1(ptr %x1_2, ptr %y1_2, i1 %c)
store ptr null, ptr @g
br label %f
f:
ret ptr %y1_2
}
define void @test2(ptr %x2) {
; CHECK-LABEL: define void @test2
; CHECK-SAME: (ptr nocapture readnone [[X2:%.*]]) #[[ATTR10]] {
; CHECK-NEXT: call void @test2(ptr [[X2]])
; CHECK-NEXT: store ptr null, ptr @g, align 8
; CHECK-NEXT: ret void
;
call void @test2(ptr %x2)
store ptr null, ptr @g
ret void
}
define void @test3(ptr %x3, ptr %y3, ptr %z3) {
; CHECK-LABEL: define void @test3
; CHECK-SAME: (ptr nocapture readnone [[X3:%.*]], ptr nocapture readnone [[Y3:%.*]], ptr nocapture readnone [[Z3:%.*]]) #[[ATTR10]] {
; CHECK-NEXT: call void @test3(ptr [[Z3]], ptr [[Y3]], ptr [[X3]])
; CHECK-NEXT: store ptr null, ptr @g, align 8
; CHECK-NEXT: ret void
;
call void @test3(ptr %z3, ptr %y3, ptr %x3)
store ptr null, ptr @g
ret void
}
define void @test4_1(ptr %x4_1, i1 %c) {
; CHECK-LABEL: define void @test4_1
; CHECK-SAME: (ptr [[X4_1:%.*]], i1 [[C:%.*]]) #[[ATTR10]] {
; CHECK-NEXT: [[TMP1:%.*]] = call ptr @test4_2(ptr [[X4_1]], ptr [[X4_1]], ptr [[X4_1]], i1 [[C]])
; CHECK-NEXT: store ptr null, ptr @g, align 8
; CHECK-NEXT: ret void
;
call ptr @test4_2(ptr %x4_1, ptr %x4_1, ptr %x4_1, i1 %c)
store ptr null, ptr @g
ret void
}
define ptr @test4_2(ptr %x4_2, ptr %y4_2, ptr %z4_2, i1 %c) {
; CHECK-LABEL: define ptr @test4_2
; CHECK-SAME: (ptr nocapture readnone [[X4_2:%.*]], ptr readnone returned [[Y4_2:%.*]], ptr nocapture readnone [[Z4_2:%.*]], i1 [[C:%.*]]) #[[ATTR10]] {
; CHECK-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; CHECK: t:
; CHECK-NEXT: call void @test4_1(ptr null, i1 [[C]])
; CHECK-NEXT: store ptr null, ptr @g, align 8
; CHECK-NEXT: br label [[F]]
; CHECK: f:
; CHECK-NEXT: ret ptr [[Y4_2]]
;
br i1 %c, label %t, label %f
t:
call void @test4_1(ptr null, i1 %c)
store ptr null, ptr @g
br label %f
f:
ret ptr %y4_2
}
declare ptr @test5_1(ptr %x5_1)
define void @test5_2(ptr %x5_2) {
; CHECK-LABEL: define void @test5_2
; CHECK-SAME: (ptr [[X5_2:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = call ptr @test5_1(ptr [[X5_2]])
; CHECK-NEXT: store ptr null, ptr @g, align 8
; CHECK-NEXT: ret void
;
call ptr @test5_1(ptr %x5_2)
store ptr null, ptr @g
ret void
}
declare void @test6_1(ptr %x6_1, ptr nocapture %y6_1, ...)
define void @test6_2(ptr %x6_2, ptr %y6_2, ptr %z6_2) {
; CHECK-LABEL: define void @test6_2
; CHECK-SAME: (ptr [[X6_2:%.*]], ptr nocapture [[Y6_2:%.*]], ptr [[Z6_2:%.*]]) {
; CHECK-NEXT: call void (ptr, ptr, ...) @test6_1(ptr [[X6_2]], ptr [[Y6_2]], ptr [[Z6_2]])
; CHECK-NEXT: store ptr null, ptr @g, align 8
; CHECK-NEXT: ret void
;
call void (ptr, ptr, ...) @test6_1(ptr %x6_2, ptr %y6_2, ptr %z6_2)
store ptr null, ptr @g
ret void
}
define void @test_cmpxchg(ptr %p) {
; CHECK-LABEL: define void @test_cmpxchg
; CHECK-SAME: (ptr nocapture [[P:%.*]]) #[[ATTR11:[0-9]+]] {
; CHECK-NEXT: [[TMP1:%.*]] = cmpxchg ptr [[P]], i32 0, i32 1 acquire monotonic, align 4
; CHECK-NEXT: ret void
;
cmpxchg ptr %p, i32 0, i32 1 acquire monotonic
ret void
}
define void @test_cmpxchg_ptr(ptr %p, ptr %q) {
; CHECK-LABEL: define void @test_cmpxchg_ptr
; CHECK-SAME: (ptr nocapture [[P:%.*]], ptr [[Q:%.*]]) #[[ATTR11]] {
; CHECK-NEXT: [[TMP1:%.*]] = cmpxchg ptr [[P]], ptr null, ptr [[Q]] acquire monotonic, align 8
; CHECK-NEXT: ret void
;
cmpxchg ptr %p, ptr null, ptr %q acquire monotonic
ret void
}
define void @test_atomicrmw(ptr %p) {
; CHECK-LABEL: define void @test_atomicrmw
; CHECK-SAME: (ptr nocapture [[P:%.*]]) #[[ATTR11]] {
; CHECK-NEXT: [[TMP1:%.*]] = atomicrmw add ptr [[P]], i32 1 seq_cst, align 4
; CHECK-NEXT: ret void
;
atomicrmw add ptr %p, i32 1 seq_cst
ret void
}
define void @test_volatile(ptr %x) {
; CHECK-LABEL: define void @test_volatile
; CHECK-SAME: (ptr [[X:%.*]]) #[[ATTR12:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, ptr [[X]], i64 1
; CHECK-NEXT: store volatile i32 0, ptr [[GEP]], align 4
; CHECK-NEXT: ret void
;
entry:
%gep = getelementptr i32, ptr %x, i64 1
store volatile i32 0, ptr %gep, align 4
ret void
}
define void @nocaptureLaunder(ptr %p) {
; CHECK-LABEL: define void @nocaptureLaunder
; CHECK-SAME: (ptr nocapture [[P:%.*]]) #[[ATTR13:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[B:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[P]])
; CHECK-NEXT: store i8 42, ptr [[B]], align 1
; CHECK-NEXT: ret void
;
entry:
%b = call ptr @llvm.launder.invariant.group.p0(ptr %p)
store i8 42, ptr %b
ret void
}
@g2 = global ptr null
define void @captureLaunder(ptr %p) {
; CHECK-LABEL: define void @captureLaunder
; CHECK-SAME: (ptr [[P:%.*]]) #[[ATTR14:[0-9]+]] {
; CHECK-NEXT: [[B:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[P]])
; CHECK-NEXT: store ptr [[B]], ptr @g2, align 8
; CHECK-NEXT: ret void
;
%b = call ptr @llvm.launder.invariant.group.p0(ptr %p)
store ptr %b, ptr @g2
ret void
}
define void @nocaptureStrip(ptr %p) {
; CHECK-LABEL: define void @nocaptureStrip
; CHECK-SAME: (ptr nocapture writeonly [[P:%.*]]) #[[ATTR15:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[B:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr [[P]])
; CHECK-NEXT: store i8 42, ptr [[B]], align 1
; CHECK-NEXT: ret void
;
entry:
%b = call ptr @llvm.strip.invariant.group.p0(ptr %p)
store i8 42, ptr %b
ret void
}
@g3 = global ptr null
define void @captureStrip(ptr %p) {
; CHECK-LABEL: define void @captureStrip
; CHECK-SAME: (ptr [[P:%.*]]) #[[ATTR16:[0-9]+]] {
; CHECK-NEXT: [[B:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr [[P]])
; CHECK-NEXT: store ptr [[B]], ptr @g3, align 8
; CHECK-NEXT: ret void
;
%b = call ptr @llvm.strip.invariant.group.p0(ptr %p)
store ptr %b, ptr @g3
ret void
}
define i1 @captureICmp(ptr %x) {
; CHECK-LABEL: define i1 @captureICmp
; CHECK-SAME: (ptr readnone [[X:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: [[TMP1:%.*]] = icmp eq ptr [[X]], null
; CHECK-NEXT: ret i1 [[TMP1]]
;
%1 = icmp eq ptr %x, null
ret i1 %1
}
define i1 @captureICmpRev(ptr %x) {
; CHECK-LABEL: define i1 @captureICmpRev
; CHECK-SAME: (ptr readnone [[X:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: [[TMP1:%.*]] = icmp eq ptr null, [[X]]
; CHECK-NEXT: ret i1 [[TMP1]]
;
%1 = icmp eq ptr null, %x
ret i1 %1
}
define i1 @nocaptureInboundsGEPICmp(ptr %x) {
; CHECK-LABEL: define i1 @nocaptureInboundsGEPICmp
; CHECK-SAME: (ptr readnone [[X:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[X]], i32 5
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq ptr [[TMP1]], null
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = getelementptr inbounds i32, ptr %x, i32 5
%2 = icmp eq ptr %1, null
ret i1 %2
}
define i1 @nocaptureInboundsGEPICmpRev(ptr %x) {
; CHECK-LABEL: define i1 @nocaptureInboundsGEPICmpRev
; CHECK-SAME: (ptr readnone [[X:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[X]], i32 5
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq ptr null, [[TMP1]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = getelementptr inbounds i32, ptr %x, i32 5
%2 = icmp eq ptr null, %1
ret i1 %2
}
define i1 @nocaptureDereferenceableOrNullICmp(ptr dereferenceable_or_null(4) %x) {
; CHECK-LABEL: define i1 @nocaptureDereferenceableOrNullICmp
; CHECK-SAME: (ptr nocapture readnone dereferenceable_or_null(4) [[X:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: [[TMP1:%.*]] = icmp eq ptr [[X]], null
; CHECK-NEXT: ret i1 [[TMP1]]
;
%1 = icmp eq ptr %x, null
ret i1 %1
}
define i1 @captureDereferenceableOrNullICmp(ptr dereferenceable_or_null(4) %x) null_pointer_is_valid {
; CHECK-LABEL: define i1 @captureDereferenceableOrNullICmp
; CHECK-SAME: (ptr readnone dereferenceable_or_null(4) [[X:%.*]]) #[[ATTR17:[0-9]+]] {
; CHECK-NEXT: [[TMP1:%.*]] = icmp eq ptr [[X]], null
; CHECK-NEXT: ret i1 [[TMP1]]
;
%1 = icmp eq ptr %x, null
ret i1 %1
}
declare void @capture(ptr)
define void @nocapture_fptr(ptr %f, ptr %p) {
; CHECK-LABEL: define void @nocapture_fptr
; CHECK-SAME: (ptr nocapture readonly [[F:%.*]], ptr [[P:%.*]]) {
; CHECK-NEXT: [[RES:%.*]] = call ptr [[F]](ptr [[P]])
; CHECK-NEXT: call void @capture(ptr [[RES]])
; CHECK-NEXT: ret void
;
%res = call ptr %f(ptr %p)
call void @capture(ptr %res)
ret void
}
define void @recurse_fptr(ptr %f, ptr %p) {
; CHECK-LABEL: define void @recurse_fptr
; CHECK-SAME: (ptr nocapture readonly [[F:%.*]], ptr [[P:%.*]]) {
; CHECK-NEXT: [[RES:%.*]] = call ptr [[F]](ptr [[P]])
; CHECK-NEXT: store i8 0, ptr [[RES]], align 1
; CHECK-NEXT: ret void
;
%res = call ptr %f(ptr %p)
store i8 0, ptr %res
ret void
}
define void @readnone_indirec(ptr %f, ptr %p) {
; CHECK-LABEL: define void @readnone_indirec
; CHECK-SAME: (ptr nocapture readonly [[F:%.*]], ptr readnone [[P:%.*]]) #[[ATTR18:[0-9]+]] {
; CHECK-NEXT: call void [[F]](ptr [[P]]) #[[ATTR21:[0-9]+]]
; CHECK-NEXT: ret void
;
call void %f(ptr %p) readnone
ret void
}
declare ptr @llvm.launder.invariant.group.p0(ptr)
declare ptr @llvm.strip.invariant.group.p0(ptr)
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