forked from OSchip/llvm-project
169 lines
2.3 KiB
C
169 lines
2.3 KiB
C
// RUN: rm -f %t
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// RUN: %clang_cc1 -analyze -analyzer-checker=debug.DumpDominators %s > %t 2>&1
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// RUN: FileCheck --input-file=%t %s
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// Test the DominatorsTree implementation with various control flows
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int test1()
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{
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int x = 6;
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int y = x/2;
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int z;
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while(y > 0) {
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if(y < x) {
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x = x/y;
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y = y-1;
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}else{
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z = x - y;
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}
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x = x - 1;
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x = x - 1;
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}
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z = x+y;
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z = 3;
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return 0;
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}
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// CHECK: Immediate dominance tree (Node#,IDom#):
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// CHECK: (0,1)
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// CHECK: (1,7)
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// CHECK: (2,3)
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// CHECK: (3,6)
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// CHECK: (4,6)
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// CHECK: (5,6)
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// CHECK: (6,7)
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// CHECK: (7,8)
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// CHECK: (8,9)
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// CHECK: (9,9)
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int test2()
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{
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int x,y,z;
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x = 10; y = 100;
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if(x > 0){
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y = 1;
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}else{
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while(x<=0){
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x++;
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y++;
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}
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}
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z = y;
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return 0;
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}
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// CHECK: Immediate dominance tree (Node#,IDom#):
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// CHECK: (0,1)
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// CHECK: (1,6)
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// CHECK: (2,3)
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// CHECK: (3,4)
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// CHECK: (4,6)
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// CHECK: (5,6)
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// CHECK: (6,7)
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// CHECK: (7,7)
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int test3()
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{
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int x,y,z;
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x = y = z = 1;
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if(x>0) {
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while(x>=0){
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while(y>=x) {
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x = x-1;
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y = y/2;
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}
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}
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}
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z = y;
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return 0;
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}
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// CHECK: Immediate dominance tree (Node#,IDom#):
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// CHECK: (0,1)
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// CHECK: (1,7)
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// CHECK: (2,5)
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// CHECK: (3,4)
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// CHECK: (4,5)
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// CHECK: (5,6)
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// CHECK: (6,7)
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// CHECK: (7,8)
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// CHECK: (8,8)
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int test4()
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{
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int y = 3;
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while(y > 0) {
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if(y < 3) {
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while(y>0)
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y ++;
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}else{
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while(y<10)
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y ++;
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}
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}
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return 0;
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}
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// CHECK: Immediate dominance tree (Node#,IDom#):
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// CHECK: (0,1)
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// CHECK: (1,10)
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// CHECK: (2,9)
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// CHECK: (3,4)
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// CHECK: (4,5)
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// CHECK: (5,9)
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// CHECK: (6,7)
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// CHECK: (7,8)
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// CHECK: (8,9)
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// CHECK: (9,10)
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// CHECK: (10,11)
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// CHECK: (11,12)
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// CHECK: (12,12)
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int test5()
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{
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int x,y,z,a,b,c;
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x = 1;
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y = 2;
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z = 3;
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a = 4;
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b = 5;
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c = 6;
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if ( x < 10 ) {
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if ( y < 10 ) {
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if ( z < 10 ) {
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x = 4;
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} else {
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x = 5;
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}
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a = 10;
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} else {
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x = 6;
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}
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b = 10;
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} else {
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x = 7;
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}
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c = 11;
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return 0;
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}
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// CHECK: Immediate dominance tree (Node#,IDom#):
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// CHECK: (0,1)
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// CHECK: (1,10)
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// CHECK: (2,10)
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// CHECK: (3,9)
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// CHECK: (4,9)
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// CHECK: (5,8)
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// CHECK: (6,8)
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// CHECK: (7,8)
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// CHECK: (8,9)
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// CHECK: (9,10)
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// CHECK: (10,11)
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// CHECK: (11,11)
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