зеркало из https://github.com/microsoft/clang-1.git
Two more test cases which have been long uncommitted.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133842 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
John McCall
Родитель
4027f09736
Коммит
88c1dfccf8
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// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - | FileCheck %s
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// rdar://problem/9246208
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// CHECK: [[OVR_T:%.*]] = type { i32, i1 }
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// Basic test.
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namespace test0 {
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struct A {
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A();
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int x;
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};
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typedef A elt;
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// CHECK: define [[A:%.*]]* @_ZN5test04testEs(i16 signext
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// CHECK: [[N:%.*]] = sext i16 {{%.*}} to i32
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// CHECK-NEXT: [[T0:%.*]] = call [[OVR_T]] @llvm.umul.with.overflow.i32(i32 [[N]], i32 4)
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// CHECK-NEXT: [[T1:%.*]] = extractvalue [[OVR_T]] [[T0]], 1
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// CHECK-NEXT: [[T2:%.*]] = extractvalue [[OVR_T]] [[T0]], 0
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// CHECK-NEXT: [[T3:%.*]] = select i1 [[T1]], i32 -1, i32 [[T2]]
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// CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T3]])
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// CHECK: icmp ult i32 {{.*}}, [[N]]
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elt *test(short s) {
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return new elt[s];
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}
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}
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// test0 with a nested array.
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namespace test1 {
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struct A {
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A();
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int x;
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};
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typedef A elt[100];
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// CHECK: define [100 x [[A:%.*]]]* @_ZN5test14testEs(i16 signext
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// CHECK: [[N:%.*]] = sext i16 {{%.*}} to i32
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// CHECK-NEXT: [[T0:%.*]] = call [[OVR_T]] @llvm.umul.with.overflow.i32(i32 [[N]], i32 400)
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// CHECK-NEXT: [[T1:%.*]] = extractvalue [[OVR_T]] [[T0]], 1
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// CHECK-NEXT: [[T2:%.*]] = extractvalue [[OVR_T]] [[T0]], 0
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// CHECK-NEXT: [[T3:%.*]] = mul i32 [[N]], 100
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// CHECK-NEXT: [[T4:%.*]] = select i1 [[T1]], i32 -1, i32 [[T2]]
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// CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T4]])
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// CHECK: icmp ult i32 {{.*}}, [[T3]]
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elt *test(short s) {
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return new elt[s];
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}
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}
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// test1 with an array cookie.
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namespace test2 {
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struct A {
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A();
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~A();
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int x;
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};
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typedef A elt[100];
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// CHECK: define [100 x [[A:%.*]]]* @_ZN5test24testEs(i16 signext
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// CHECK: [[N:%.*]] = sext i16 {{%.*}} to i32
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// CHECK-NEXT: [[T0:%.*]] = call [[OVR_T]] @llvm.umul.with.overflow.i32(i32 [[N]], i32 400)
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// CHECK-NEXT: [[T1:%.*]] = extractvalue [[OVR_T]] [[T0]], 1
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// CHECK-NEXT: [[T2:%.*]] = extractvalue [[OVR_T]] [[T0]], 0
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// CHECK-NEXT: [[T3:%.*]] = mul i32 [[N]], 100
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// CHECK-NEXT: [[T4:%.*]] = call [[OVR_T]] @llvm.uadd.with.overflow.i32(i32 [[T2]], i32 4)
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// CHECK-NEXT: [[T5:%.*]] = extractvalue [[OVR_T]] [[T4]], 1
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// CHECK-NEXT: [[T6:%.*]] = or i1 [[T1]], [[T5]]
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// CHECK-NEXT: [[T7:%.*]] = extractvalue [[OVR_T]] [[T4]], 0
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// CHECK-NEXT: [[T8:%.*]] = select i1 [[T6]], i32 -1, i32 [[T7]]
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// CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T8]])
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// CHECK: icmp ult i32 {{.*}}, [[T3]]
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elt *test(short s) {
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return new elt[s];
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}
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}
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// test0 with a 1-byte element.
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namespace test4 {
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struct A {
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A();
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};
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typedef A elt;
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// CHECK: define [[A:%.*]]* @_ZN5test44testEs(i16 signext
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// CHECK: [[N:%.*]] = sext i16 {{%.*}} to i32
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// CHECK-NEXT: [[T0:%.*]] = icmp slt i32 [[N]], 0
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// CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i32 -1, i32 [[N]]
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// CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T1]])
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// CHECK: icmp ult i32 {{.*}}, [[N]]
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elt *test(short s) {
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return new elt[s];
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}
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}
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// test4 with no sext required.
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namespace test5 {
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struct A {
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A();
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};
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typedef A elt;
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// CHECK: define [[A:%.*]]* @_ZN5test54testEi(i32
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// CHECK: [[N:%.*]] = load i32*
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// CHECK-NEXT: [[T0:%.*]] = icmp slt i32 [[N]], 0
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// CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i32 -1, i32 [[N]]
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// CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T1]])
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// CHECK: icmp ult i32 {{.*}}, [[N]]
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elt *test(int s) {
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return new elt[s];
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}
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}
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// test0 with an unsigned size.
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namespace test6 {
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struct A {
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A();
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int x;
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};
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typedef A elt;
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// CHECK: define [[A:%.*]]* @_ZN5test64testEt(i16 zeroext
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// CHECK: [[N:%.*]] = zext i16 {{%.*}} to i32
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// CHECK-NEXT: [[T0:%.*]] = call [[OVR_T]] @llvm.umul.with.overflow.i32(i32 [[N]], i32 4)
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// CHECK-NEXT: [[T1:%.*]] = extractvalue [[OVR_T]] [[T0]], 1
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// CHECK-NEXT: [[T2:%.*]] = extractvalue [[OVR_T]] [[T0]], 0
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// CHECK-NEXT: [[T3:%.*]] = select i1 [[T1]], i32 -1, i32 [[T2]]
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// CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T3]])
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// CHECK: icmp ult i32 {{.*}}, [[N]]
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elt *test(unsigned short s) {
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return new elt[s];
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}
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}
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// test1 with an unsigned size.
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namespace test7 {
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struct A {
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A();
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int x;
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};
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typedef A elt[100];
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// CHECK: define [100 x [[A:%.*]]]* @_ZN5test74testEt(i16 zeroext
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// CHECK: [[N:%.*]] = zext i16 {{%.*}} to i32
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// CHECK-NEXT: [[T0:%.*]] = call [[OVR_T]] @llvm.umul.with.overflow.i32(i32 [[N]], i32 400)
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// CHECK-NEXT: [[T1:%.*]] = extractvalue [[OVR_T]] [[T0]], 1
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// CHECK-NEXT: [[T2:%.*]] = extractvalue [[OVR_T]] [[T0]], 0
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// CHECK-NEXT: [[T3:%.*]] = mul i32 [[N]], 100
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// CHECK-NEXT: [[T4:%.*]] = select i1 [[T1]], i32 -1, i32 [[T2]]
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// CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T4]])
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// CHECK: icmp ult i32 {{.*}}, [[T3]]
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elt *test(unsigned short s) {
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return new elt[s];
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}
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}
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// test0 with a signed type larger than size_t.
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namespace test8 {
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struct A {
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A();
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int x;
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};
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typedef A elt;
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// CHECK: define [[A:%.*]]* @_ZN5test84testEx(i64
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// CHECK: [[N:%.*]] = load i64*
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// CHECK-NEXT: [[T0:%.*]] = icmp uge i64 [[N]], 4294967296
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// CHECK-NEXT: [[T1:%.*]] = trunc i64 [[N]] to i32
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// CHECK-NEXT: [[T2:%.*]] = call [[OVR_T]] @llvm.umul.with.overflow.i32(i32 [[T1]], i32 4)
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// CHECK-NEXT: [[T3:%.*]] = extractvalue [[OVR_T]] [[T2]], 1
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// CHECK-NEXT: [[T4:%.*]] = or i1 [[T0]], [[T3]]
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// CHECK-NEXT: [[T5:%.*]] = extractvalue [[OVR_T]] [[T2]], 0
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// CHECK-NEXT: [[T6:%.*]] = select i1 [[T4]], i32 -1, i32 [[T5]]
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// CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T6]])
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// CHECK: icmp ult i32 {{.*}}, [[T1]]
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elt *test(long long s) {
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return new elt[s];
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}
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}
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// test8 with an unsigned type.
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namespace test9 {
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struct A {
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A();
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int x;
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};
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typedef A elt;
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// CHECK: define [[A:%.*]]* @_ZN5test94testEy(i64
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// CHECK: [[N:%.*]] = load i64*
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// CHECK-NEXT: [[T0:%.*]] = icmp uge i64 [[N]], 4294967296
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// CHECK-NEXT: [[T1:%.*]] = trunc i64 [[N]] to i32
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// CHECK-NEXT: [[T2:%.*]] = call [[OVR_T]] @llvm.umul.with.overflow.i32(i32 [[T1]], i32 4)
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// CHECK-NEXT: [[T3:%.*]] = extractvalue [[OVR_T]] [[T2]], 1
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// CHECK-NEXT: [[T4:%.*]] = or i1 [[T0]], [[T3]]
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// CHECK-NEXT: [[T5:%.*]] = extractvalue [[OVR_T]] [[T2]], 0
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// CHECK-NEXT: [[T6:%.*]] = select i1 [[T4]], i32 -1, i32 [[T5]]
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// CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T6]])
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// CHECK: icmp ult i32 {{.*}}, [[T1]]
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elt *test(unsigned long long s) {
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return new elt[s];
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}
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}
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@ -0,0 +1,8 @@
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// RUN: %clang_cc1 -fsyntax-only -verify -Wsign-conversion %s
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// PR9345: make a subgroup of -Wconversion for signedness changes
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void test(int x) {
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unsigned t0 = x; // expected-warning {{implicit conversion changes signedness}}
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unsigned t1 = (t0 == 5 ? x : 0); // expected-warning {{operand of ? changes signedness}}
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}
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