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clang-p2996/llvm/test/Transforms/InstCombine/objsize.ll
Nuno Lopes 952e069393 [NFC] remove 'br undef' from InstCombine test cases 
This is UB and allows the compiler to give any result, so these tests weren't meaningful
InstCombine tests are now clean of 'br undef'
2022-06-10 15:28:57 +01:00

385 lines
14 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; Test a pile of objectsize bounds checking.
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
; We need target data to get the sizes of the arrays and structures.
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
@a = private global [60 x i8] zeroinitializer, align 1 ; <[60 x i8]*>
@.str = private constant [8 x i8] c"abcdefg\00" ; <[8 x i8]*>
define i32 @foo() nounwind {
; CHECK-LABEL: @foo(
; CHECK-NEXT: ret i32 60
;
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
ret i32 %1
}
define i8* @bar() nounwind {
; CHECK-LABEL: @bar(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RETVAL:%.*]] = alloca i8*, align 4
; CHECK-NEXT: br i1 true, label [[COND_TRUE:%.*]], label [[COND_FALSE:%.*]]
; CHECK: cond.true:
; CHECK-NEXT: [[TMP0:%.*]] = load i8*, i8** [[RETVAL]], align 4
; CHECK-NEXT: ret i8* [[TMP0]]
; CHECK: cond.false:
; CHECK-NEXT: ret i8* undef
;
entry:
%retval = alloca i8*
%0 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @a, i32 0, i32 0), i1 false, i1 false, i1 false)
%cmp = icmp ne i32 %0, -1
br i1 %cmp, label %cond.true, label %cond.false
cond.true:
%1 = load i8*, i8** %retval
ret i8* %1
cond.false:
%2 = load i8*, i8** %retval
ret i8* %2
}
define i32 @f() nounwind {
; CHECK-LABEL: @f(
; CHECK-NEXT: ret i32 0
;
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr ([60 x i8], [60 x i8]* @a, i32 1, i32 0), i1 false, i1 false, i1 false)
ret i32 %1
}
@window = external global [0 x i8]
define i1 @baz() nounwind {
; CHECK-LABEL: @baz(
; CHECK-NEXT: [[TMP1:%.*]] = tail call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 0), i1 false, i1 false, i1 false)
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP1]], -1
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 0), i1 false, i1 false, i1 false)
%2 = icmp eq i32 %1, -1
ret i1 %2
}
define void @test1(i8* %q, i32 %x) nounwind noinline {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 10), i1 false, i1 false, i1 false)
; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[TMP0]], -1
; CHECK-NEXT: br i1 [[TMP1]], label %"47", label %"46"
; CHECK: "46":
; CHECK-NEXT: unreachable
; CHECK: "47":
; CHECK-NEXT: unreachable
;
entry:
%0 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([0 x i8], [0 x i8]* @window, i32 0, i32 10), i1 false, i1 false, i1 false) ; <i64> [#uses=1]
%1 = icmp eq i32 %0, -1 ; <i1> [#uses=1]
br i1 %1, label %"47", label %"46"
"46": ; preds = %entry
unreachable
"47": ; preds = %entry
unreachable
}
@.str5 = private constant [9 x i32] [i32 97, i32 98, i32 99, i32 100, i32 0, i32
101, i32 102, i32 103, i32 0], align 4
define i32 @test2() nounwind {
; CHECK-LABEL: @test2(
; CHECK-NEXT: ret i32 34
;
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr (i8, i8* bitcast ([9 x i32]* @.str5 to i8*), i32 2), i1 false, i1 false, i1 false)
ret i32 %1
}
; rdar://7674946
@array = internal global [480 x float] zeroinitializer ; <[480 x float]*> [#uses=1]
declare i8* @__memcpy_chk(i8*, i8*, i32, i32) nounwind
declare i32 @llvm.objectsize.i32.p0i8(i8*, i1, i1, i1) nounwind readonly
declare i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)*, i1, i1, i1) nounwind readonly
declare i8* @__inline_memcpy_chk(i8*, i8*, i32) nounwind inlinehint
define void @test3(i1 %c1, i8* %ptr1, i8* %ptr2, i8* %ptr3) nounwind {
; CHECK-LABEL: @test3(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C1:%.*]], label [[BB11:%.*]], label [[BB12:%.*]]
; CHECK: bb11:
; CHECK-NEXT: unreachable
; CHECK: bb12:
; CHECK-NEXT: [[TMP0:%.*]] = call i8* @__inline_memcpy_chk(i8* bitcast (float* getelementptr inbounds ([480 x float], [480 x float]* @array, i32 0, i32 1) to i8*), i8* [[PTR3:%.*]], i32 512) #[[ATTR3:[0-9]+]]
; CHECK-NEXT: unreachable
;
entry:
br i1 %c1, label %bb11, label %bb12
bb11:
%0 = getelementptr inbounds float, float* getelementptr inbounds ([480 x float], [480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
%1 = bitcast float* %0 to i8* ; <i8*> [#uses=1]
%2 = call i32 @llvm.objectsize.i32.p0i8(i8* %1, i1 false, i1 false, i1 false) ; <i32> [#uses=1]
%3 = call i8* @__memcpy_chk(i8* %ptr1, i8* %ptr2, i32 512, i32 %2) nounwind ; <i8*> [#uses=0]
unreachable
bb12:
%4 = getelementptr inbounds float, float* getelementptr inbounds ([480 x float], [480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
%5 = bitcast float* %4 to i8* ; <i8*> [#uses=1]
%6 = call i8* @__inline_memcpy_chk(i8* %5, i8* %ptr3, i32 512) nounwind inlinehint ; <i8*> [#uses=0]
unreachable
}
; rdar://7718857
%struct.data = type { [100 x i32], [100 x i32], [1024 x i8] }
define i32 @test4(i8** %esc) nounwind ssp {
; CHECK-LABEL: @test4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = alloca [[STRUCT_DATA:%.*]], align 8
; CHECK-NEXT: [[TMP1:%.*]] = bitcast %struct.data* [[TMP0]] to i8*
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* noundef nonnull align 8 dereferenceable(1824) [[TMP1]], i8 0, i32 1824, i1 false) #[[ATTR0:[0-9]+]]
; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8** [[ESC:%.*]] to %struct.data**
; CHECK-NEXT: store %struct.data* [[TMP0]], %struct.data** [[TMP2]], align 4
; CHECK-NEXT: ret i32 0
;
entry:
%0 = alloca %struct.data, align 8
%1 = bitcast %struct.data* %0 to i8*
%2 = call i32 @llvm.objectsize.i32.p0i8(i8* %1, i1 false, i1 false, i1 false) nounwind
%3 = call i8* @__memset_chk(i8* %1, i32 0, i32 1824, i32 %2) nounwind
store i8* %1, i8** %esc
ret i32 0
}
; rdar://7782496
@s = external global i8*
define i8* @test5(i32 %n) nounwind ssp {
; CHECK-LABEL: @test5(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = tail call noalias dereferenceable_or_null(20) i8* @malloc(i32 20) #[[ATTR0]]
; CHECK-NEXT: [[TMP1:%.*]] = load i8*, i8** @s, align 8
; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* noundef nonnull align 1 dereferenceable(10) [[TMP0]], i8* noundef nonnull align 1 dereferenceable(10) [[TMP1]], i32 10, i1 false) #[[ATTR0]]
; CHECK-NEXT: ret i8* [[TMP0]]
;
entry:
%0 = tail call noalias i8* @malloc(i32 20) nounwind
%1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %0, i1 false, i1 false, i1 false)
%2 = load i8*, i8** @s, align 8
%3 = tail call i8* @__memcpy_chk(i8* %0, i8* %2, i32 10, i32 %1) nounwind
ret i8* %0
}
define void @test6(i32 %n) nounwind ssp {
; CHECK-LABEL: @test6(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = tail call noalias dereferenceable_or_null(20) i8* @malloc(i32 20) #[[ATTR0]]
; CHECK-NEXT: [[TMP1:%.*]] = load i8*, i8** @s, align 8
; CHECK-NEXT: [[TMP2:%.*]] = tail call i8* @__memcpy_chk(i8* [[TMP0]], i8* [[TMP1]], i32 30, i32 20) #[[ATTR0]]
; CHECK-NEXT: ret void
;
entry:
%0 = tail call noalias i8* @malloc(i32 20) nounwind
%1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %0, i1 false, i1 false, i1 false)
%2 = load i8*, i8** @s, align 8
%3 = tail call i8* @__memcpy_chk(i8* %0, i8* %2, i32 30, i32 %1) nounwind
ret void
}
declare i8* @__memset_chk(i8*, i32, i32, i32) nounwind
declare noalias i8* @malloc(i32) nounwind
define i32 @test7(i8** %esc) {
; CHECK-LABEL: @test7(
; CHECK-NEXT: [[ALLOC:%.*]] = call noalias dereferenceable_or_null(48) i8* @malloc(i32 48) #[[ATTR0]]
; CHECK-NEXT: store i8* [[ALLOC]], i8** [[ESC:%.*]], align 4
; CHECK-NEXT: ret i32 32
;
%alloc = call noalias i8* @malloc(i32 48) nounwind
store i8* %alloc, i8** %esc
%gep = getelementptr inbounds i8, i8* %alloc, i32 16
%objsize = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 false, i1 false, i1 false) nounwind readonly
ret i32 %objsize
}
declare noalias i8* @calloc(i32, i32) nounwind
define i32 @test8(i8** %esc) {
; CHECK-LABEL: @test8(
; CHECK-NEXT: [[ALLOC:%.*]] = call noalias dereferenceable_or_null(35) i8* @calloc(i32 5, i32 7) #[[ATTR0]]
; CHECK-NEXT: store i8* [[ALLOC]], i8** [[ESC:%.*]], align 4
; CHECK-NEXT: ret i32 30
;
%alloc = call noalias i8* @calloc(i32 5, i32 7) nounwind
store i8* %alloc, i8** %esc
%gep = getelementptr inbounds i8, i8* %alloc, i32 5
%objsize = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 false, i1 false, i1 false) nounwind readonly
ret i32 %objsize
}
declare noalias i8* @strdup(i8* nocapture) nounwind
declare noalias i8* @strndup(i8* nocapture, i32) nounwind
define i32 @test9(i8** %esc) {
; CHECK-LABEL: @test9(
; CHECK-NEXT: [[CALL:%.*]] = tail call dereferenceable_or_null(8) i8* @strdup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0)) #[[ATTR0]]
; CHECK-NEXT: store i8* [[CALL]], i8** [[ESC:%.*]], align 8
; CHECK-NEXT: ret i32 8
;
%call = tail call i8* @strdup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0)) nounwind
store i8* %call, i8** %esc, align 8
%1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
ret i32 %1
}
define i32 @test10(i8** %esc) {
; CHECK-LABEL: @test10(
; CHECK-NEXT: [[CALL:%.*]] = tail call dereferenceable_or_null(4) i8* @strndup(i8* dereferenceable(8) getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0), i32 3) #[[ATTR0]]
; CHECK-NEXT: store i8* [[CALL]], i8** [[ESC:%.*]], align 8
; CHECK-NEXT: ret i32 4
;
%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 3) nounwind
store i8* %call, i8** %esc, align 8
%1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
ret i32 %1
}
define i32 @test11(i8** %esc) {
; CHECK-LABEL: @test11(
; CHECK-NEXT: [[STRDUP:%.*]] = tail call dereferenceable_or_null(8) i8* @strdup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0))
; CHECK-NEXT: store i8* [[STRDUP]], i8** [[ESC:%.*]], align 8
; CHECK-NEXT: ret i32 8
;
%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 7) nounwind
store i8* %call, i8** %esc, align 8
%1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
ret i32 %1
}
define i32 @test12(i8** %esc) {
; CHECK-LABEL: @test12(
; CHECK-NEXT: [[STRDUP:%.*]] = tail call dereferenceable_or_null(8) i8* @strdup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0))
; CHECK-NEXT: store i8* [[STRDUP]], i8** [[ESC:%.*]], align 8
; CHECK-NEXT: ret i32 8
;
%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 8) nounwind
store i8* %call, i8** %esc, align 8
%1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
ret i32 %1
}
define i32 @test13(i8** %esc) {
; CHECK-LABEL: @test13(
; CHECK-NEXT: [[STRDUP:%.*]] = tail call dereferenceable_or_null(8) i8* @strdup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i32 0, i32 0))
; CHECK-NEXT: store i8* [[STRDUP]], i8** [[ESC:%.*]], align 8
; CHECK-NEXT: ret i32 8
;
%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0), i32 57) nounwind
store i8* %call, i8** %esc, align 8
%1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %call, i1 true, i1 false, i1 false)
ret i32 %1
}
@globalalias = internal alias [60 x i8], [60 x i8]* @a
define i32 @test18() {
; CHECK-LABEL: @test18(
; CHECK-NEXT: ret i32 60
;
%bc = bitcast [60 x i8]* @globalalias to i8*
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* %bc, i1 false, i1 false, i1 false)
ret i32 %1
}
@globalalias2 = weak alias [60 x i8], [60 x i8]* @a
define i32 @test19() {
; CHECK-LABEL: @test19(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p0i8(i8* getelementptr inbounds ([60 x i8], [60 x i8]* @globalalias2, i32 0, i32 0), i1 false, i1 false, i1 false)
; CHECK-NEXT: ret i32 [[TMP1]]
;
%bc = bitcast [60 x i8]* @globalalias2 to i8*
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* %bc, i1 false, i1 false, i1 false)
ret i32 %1
}
define i32 @test20() {
; CHECK-LABEL: @test20(
; CHECK-NEXT: ret i32 0
;
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 false, i1 false, i1 false)
ret i32 %1
}
define i32 @test21() {
; CHECK-LABEL: @test21(
; CHECK-NEXT: ret i32 0
;
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 true, i1 false, i1 false)
ret i32 %1
}
define i32 @test22() {
; CHECK-LABEL: @test22(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 false, i1 true, i1 false)
; CHECK-NEXT: ret i32 [[TMP1]]
;
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 false, i1 true, i1 false)
ret i32 %1
}
define i32 @test23() {
; CHECK-LABEL: @test23(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 true, i1 true, i1 false)
; CHECK-NEXT: ret i32 [[TMP1]]
;
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* null, i1 true, i1 true, i1 false)
ret i32 %1
}
; 1 is an arbitrary non-zero address space.
define i32 @test24() {
; CHECK-LABEL: @test24(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 false, i1 false, i1 false)
; CHECK-NEXT: ret i32 [[TMP1]]
;
%1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 false,
i1 false, i1 false)
ret i32 %1
}
define i32 @test25() {
; CHECK-LABEL: @test25(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 true, i1 false, i1 false)
; CHECK-NEXT: ret i32 [[TMP1]]
;
%1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 true,
i1 false, i1 false)
ret i32 %1
}
define i32 @test26() {
; CHECK-LABEL: @test26(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 false, i1 true, i1 false)
; CHECK-NEXT: ret i32 [[TMP1]]
;
%1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 false,
i1 true, i1 false)
ret i32 %1
}
define i32 @test27() {
; CHECK-LABEL: @test27(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 true, i1 true, i1 false)
; CHECK-NEXT: ret i32 [[TMP1]]
;
%1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* null, i1 true,
i1 true, i1 false)
ret i32 %1
}
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