; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt -passes=instcombine -S < %s | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128-p7:32:32"
target triple = "x86_64-apple-macosx10.14.0"
; Function Attrs: nounwind ssp uwtable
define i64 @weird_identity_but_ok(i64 %sz) {
; CHECK-LABEL: define i64 @weird_identity_but_ok
; CHECK-SAME: (i64 [[SZ:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = icmp ne i64 [[SZ]], -1
; CHECK-NEXT: call void @llvm.assume(i1 [[TMP0]])
; CHECK-NEXT: ret i64 [[SZ]]
;
entry:
%call = tail call ptr @malloc(i64 %sz)
%calc_size = tail call i64 @llvm.objectsize.i64.p0(ptr %call, i1 false, i1 true, i1 true)
tail call void @free(ptr %call)
ret i64 %calc_size
}
define i64 @phis_are_neat(i1 %which) {
; CHECK-LABEL: define i64 @phis_are_neat
; CHECK-SAME: (i1 [[WHICH:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[WHICH]], label [[FIRST_LABEL:%.*]], label [[SECOND_LABEL:%.*]]
; CHECK: first_label:
; CHECK-NEXT: br label [[JOIN_LABEL:%.*]]
; CHECK: second_label:
; CHECK-NEXT: br label [[JOIN_LABEL]]
; CHECK: join_label:
; CHECK-NEXT: [[TMP0:%.*]] = phi i64 [ 10, [[FIRST_LABEL]] ], [ 30, [[SECOND_LABEL]] ]
; CHECK-NEXT: ret i64 [[TMP0]]
;
entry:
br i1 %which, label %first_label, label %second_label
first_label:
%first_call = call ptr @malloc(i64 10)
br label %join_label
second_label:
%second_call = call ptr @malloc(i64 30)
br label %join_label
join_label:
%joined = phi ptr [ %first_call, %first_label ], [ %second_call, %second_label ]
%calc_size = tail call i64 @llvm.objectsize.i64.p0(ptr %joined, i1 false, i1 true, i1 true)
ret i64 %calc_size
}
define i64 @internal_pointer(i64 %sz) {
; CHECK-LABEL: define i64 @internal_pointer
; CHECK-SAME: (i64 [[SZ:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.usub.sat.i64(i64 [[SZ]], i64 2)
; CHECK-NEXT: ret i64 [[TMP0]]
;
entry:
%ptr = call ptr @malloc(i64 %sz)
%ptr2 = getelementptr inbounds i8, ptr %ptr, i32 2
%calc_size = call i64 @llvm.objectsize.i64.p0(ptr %ptr2, i1 false, i1 true, i1 true)
ret i64 %calc_size
}
define i64 @uses_nullptr_no_fold() {
; CHECK-LABEL: define i64 @uses_nullptr_no_fold() {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RES:%.*]] = call i64 @llvm.objectsize.i64.p0(ptr null, i1 false, i1 true, i1 true)
; CHECK-NEXT: ret i64 [[RES]]
;
entry:
%res = call i64 @llvm.objectsize.i64.p0(ptr null, i1 false, i1 true, i1 true)
ret i64 %res
}
define i64 @uses_nullptr_fold() {
; CHECK-LABEL: define i64 @uses_nullptr_fold() {
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 0
;
entry:
; NOTE: the third parameter to this call is false, unlike above.
%res = call i64 @llvm.objectsize.i64.p0(ptr null, i1 false, i1 false, i1 true)
ret i64 %res
}
@d = common global i8 0, align 1
@c = common global i32 0, align 4
; Function Attrs: nounwind
define void @f() {
; CHECK-LABEL: define void @f() {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[DOTPR:%.*]] = load i32, ptr @c, align 4
; CHECK-NEXT: [[TOBOOL4:%.*]] = icmp eq i32 [[DOTPR]], 0
; CHECK-NEXT: br i1 [[TOBOOL4]], label [[FOR_END:%.*]], label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[DP_05:%.*]] = phi ptr [ [[ADD_PTR:%.*]], [[FOR_BODY]] ], [ @d, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[TMP0:%.*]] = tail call i64 @llvm.objectsize.i64.p0(ptr [[DP_05]], i1 false, i1 true, i1 true)
; CHECK-NEXT: [[CONV:%.*]] = trunc i64 [[TMP0]] to i32
; CHECK-NEXT: tail call void @bury(i32 [[CONV]])
; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr @c, align 4
; CHECK-NEXT: [[IDX_EXT:%.*]] = sext i32 [[TMP1]] to i64
; CHECK-NEXT: [[ADD_PTR]] = getelementptr inbounds i8, ptr [[DP_05]], i64 [[IDX_EXT]]
; CHECK-NEXT: [[ADD:%.*]] = shl nsw i32 [[TMP1]], 1
; CHECK-NEXT: store i32 [[ADD]], ptr @c, align 4
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[TMP1]], 0
; CHECK-NEXT: br i1 [[TOBOOL]], label [[FOR_END]], label [[FOR_BODY]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
%.pr = load i32, ptr @c, align 4
%tobool4 = icmp eq i32 %.pr, 0
br i1 %tobool4, label %for.end, label %for.body
for.body: ; preds = %entry, %for.body
%dp.05 = phi ptr [ %add.ptr, %for.body ], [ @d, %entry ]
%0 = tail call i64 @llvm.objectsize.i64.p0(ptr %dp.05, i1 false, i1 true, i1 true)
%conv = trunc i64 %0 to i32
tail call void @bury(i32 %conv) #3
%1 = load i32, ptr @c, align 4
%idx.ext = sext i32 %1 to i64
%add.ptr.offs = add i64 %idx.ext, 0
%2 = add i64 undef, %add.ptr.offs
%add.ptr = getelementptr inbounds i8, ptr %dp.05, i64 %idx.ext
%add = shl nsw i32 %1, 1
store i32 %add, ptr @c, align 4
%tobool = icmp eq i32 %1, 0
br i1 %tobool, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
define void @bdos_cmpm1(i64 %alloc) {
; CHECK-LABEL: define void @bdos_cmpm1
; CHECK-SAME: (i64 [[ALLOC:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[OBJ:%.*]] = call ptr @malloc(i64 [[ALLOC]])
; CHECK-NEXT: [[TMP0:%.*]] = icmp ne i64 [[ALLOC]], -1
; CHECK-NEXT: call void @llvm.assume(i1 [[TMP0]])
; CHECK-NEXT: br i1 false, label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: call void @fortified_chk(ptr [[OBJ]], i64 [[ALLOC]])
; CHECK-NEXT: br label [[IF_END:%.*]]
; CHECK: if.else:
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: ret void
;
entry:
%obj = call ptr @malloc(i64 %alloc)
%objsize = call i64 @llvm.objectsize.i64.p0(ptr %obj, i1 0, i1 0, i1 1)
%cmp.not = icmp eq i64 %objsize, -1
br i1 %cmp.not, label %if.else, label %if.then
if.then:
call void @fortified_chk(ptr %obj, i64 %objsize)
br label %if.end
if.else:
call void @unfortified(ptr %obj, i64 %objsize)
br label %if.end
if.end: ; preds = %if.else, %if.then
ret void
}
define void @bdos_cmpm1_expr(i64 %alloc, i64 %part) {
; CHECK-LABEL: define void @bdos_cmpm1_expr
; CHECK-SAME: (i64 [[ALLOC:%.*]], i64 [[PART:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SZ:%.*]] = udiv i64 [[ALLOC]], [[PART]]
; CHECK-NEXT: [[OBJ:%.*]] = call ptr @malloc(i64 [[SZ]])
; CHECK-NEXT: [[TMP0:%.*]] = icmp ne i64 [[SZ]], -1
; CHECK-NEXT: call void @llvm.assume(i1 [[TMP0]])
; CHECK-NEXT: br i1 false, label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.then:
; CHECK-NEXT: call void @fortified_chk(ptr [[OBJ]], i64 [[SZ]])
; CHECK-NEXT: br label [[IF_END:%.*]]
; CHECK: if.else:
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: ret void
;
entry:
%sz = udiv i64 %alloc, %part
%obj = call ptr @malloc(i64 %sz)
%objsize = call i64 @llvm.objectsize.i64.p0(ptr %obj, i1 0, i1 0, i1 1)
%cmp.not = icmp eq i64 %objsize, -1
br i1 %cmp.not, label %if.else, label %if.then
if.then:
call void @fortified_chk(ptr %obj, i64 %objsize)
br label %if.end
if.else:
call void @unfortified(ptr %obj, i64 %objsize)
br label %if.end
if.end: ; preds = %if.else, %if.then
ret void
}
@p7 = internal addrspace(7) global i8 0
; Gracefully handle AS cast when the address spaces have different pointer widths.
define i64 @as_cast(i1 %c) {
; CHECK-LABEL: define i64 @as_cast
; CHECK-SAME: (i1 [[C:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = select i1 [[C]], i64 64, i64 0
; CHECK-NEXT: ret i64 [[TMP0]]
;
entry:
%p0 = tail call ptr @malloc(i64 64)
%gep = getelementptr i8, ptr addrspace(7) @p7, i32 1
%as = addrspacecast ptr addrspace(7) %gep to ptr
%select = select i1 %c, ptr %p0, ptr %as
%calc_size = tail call i64 @llvm.objectsize.i64.p0(ptr %select, i1 false, i1 true, i1 true)
ret i64 %calc_size
}
define i64 @constexpr_as_cast(i1 %c) {
; CHECK-LABEL: define i64 @constexpr_as_cast
; CHECK-SAME: (i1 [[C:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = select i1 [[C]], i64 64, i64 0
; CHECK-NEXT: ret i64 [[TMP0]]
;
entry:
%p0 = tail call ptr @malloc(i64 64)
%select = select i1 %c, ptr %p0, ptr addrspacecast (ptr addrspace(7) getelementptr (i8, ptr addrspace(7) @p7, i32 1) to ptr)
%calc_size = tail call i64 @llvm.objectsize.i64.p0(ptr %select, i1 false, i1 true, i1 true)
ret i64 %calc_size
}
declare void @bury(i32) local_unnamed_addr #2
; Function Attrs: nounwind allocsize(0)
declare ptr @malloc(i64) nounwind allocsize(0) allockind("alloc,uninitialized") "alloc-family"="malloc"
declare ptr @get_unknown_buffer()
; Function Attrs: nounwind
declare void @free(ptr nocapture) nounwind allockind("free") "alloc-family"="malloc"
; Function Attrs: nounwind readnone speculatable
declare i64 @llvm.objectsize.i64.p0(ptr, i1, i1, i1)
declare void @fortified_chk(ptr, i64)
declare void @unfortified(ptr, i64)
Codebase Browser
llvm