| /* Check that the result of a bitfield assignment is properly |
| truncated and does not generate a redundant load. */ |
| |
| /* Check that we get one load for each simple assign and two for the |
| compound assign (load the old value before the add then load again |
| to store back). Also check that our g0 pattern is good. */ |
| // RUN: clang -triple i386-unknown-unknown -O0 -emit-llvm -o %t %s && |
| // RUN: grep 'load ' %t | count 5 && |
| // RUN: grep "@g0" %t | count 4 && |
| |
| // Check that we got the right value. |
| // RUN: clang -triple i386-unknown-unknown -O3 -emit-llvm -o %t %s && |
| // RUN: grep 'load ' %t | count 0 && |
| // RUN: grep "@g0" %t | count 0 |
| |
| struct s0 { |
| int f0 : 2; |
| _Bool f1 : 1; |
| unsigned f2 : 2; |
| }; |
| |
| int g0(); |
| |
| void f0(void) { |
| struct s0 s; |
| if ((s.f0 = 3) != -1) g0(); |
| } |
| |
| void f1(void) { |
| struct s0 s; |
| if ((s.f1 = 3) != 1) g0(); |
| } |
| |
| void f2(void) { |
| struct s0 s; |
| if ((s.f2 = 3) != 3) g0(); |
| } |
| |
| void f3(void) { |
| struct s0 s; |
| // Just check this one for load counts. |
| s.f0 += 3; |
| } |
| |