879ce8841d
With r185721, calling mangleCXXRTTIName on C code will cause crashes. This commit fixes crashes on C testing cases when turning on struct-path TBAA. For C code, we simply use the Decl name without the context. This can cause two different structs having the same name, and may cause inaccurate but conservative alias results. llvm-svn: 188930
90 lines
1.5 KiB
C
90 lines
1.5 KiB
C
// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - -O3 | FileCheck %s
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// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - -O3 -struct-path-tbaa | FileCheck %s --check-prefix=PATH
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static int f0(int n) {
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struct s0 {
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int a : 30;
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int b : 2;
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long long c : 31;
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} x = { 0xdeadbeef, 0xdeadbeef, 0xdeadbeef };
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x.a += n;
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x.b += n;
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x.c += n;
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return x.a + x.b + x.c;
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}
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int g0(void) {
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// CHECK-LABEL: @g0()
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// CHECK: ret i32 1
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// PATH-LABEL: @g0()
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// PATH: ret i32 1
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return f0(-1) + 44335655;
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}
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static int f1(void) {
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struct s1 {
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int a:13;
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char b;
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unsigned short c:7;
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} x;
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x.a = -40;
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x.b = 10;
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x.c = 15;
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return x.a + x.b + x.c;
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}
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int g1(void) {
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// CHECK-LABEL: @g1()
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// CHECK: ret i32 1
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// PATH-LABEL: @g1()
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// PATH: ret i32 1
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return f1() + 16;
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}
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static int f2(void) {
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struct s2 {
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short a[3];
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int b : 15;
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} x;
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x.a[0] = x.a[1] = x.a[2] = -40;
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x.b = 10;
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return x.b;
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}
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int g2(void) {
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// CHECK-LABEL: @g2()
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// CHECK: ret i32 1
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// PATH-LABEL: @g2()
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// PATH: ret i32 1
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return f2() - 9;
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}
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static int f3(int n) {
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struct s3 {
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unsigned a:16;
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unsigned b:28 __attribute__ ((packed));
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} x = { 0xdeadbeef, 0xdeadbeef };
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struct s4 {
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signed a:16;
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signed b:28 __attribute__ ((packed));
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} y;
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y.a = -0x56789abcL;
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y.b = -0x56789abcL;
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return ((y.a += x.a += n) +
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(y.b += x.b += n));
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}
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int g3(void) {
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// CHECK-LABEL: @g3()
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// CHECK: ret i32 1
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// PATH-LABEL: @g3()
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// PATH: ret i32 1
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return f3(20) + 130725747;
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}
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