| ; RUN: opt < %s -basicaa -gvn -tsan -S | FileCheck %s |
| ; TSAN conflicts with load widening. Make sure the load widening is off with -tsan. |
| |
| ; 32-bit little endian target. |
| 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-n8:16:32" |
| |
| %struct_of_8_bytes_4_aligned = type { i32, i8, i8, i8, i8} |
| |
| @f = global %struct_of_8_bytes_4_aligned zeroinitializer, align 4 |
| |
| ; Accessing bytes 4 and 6, not ok to widen to i32 if sanitize_thread is set. |
| |
| define i32 @test_widening_bad(i8* %P) nounwind ssp noredzone sanitize_thread { |
| entry: |
| %tmp = load i8, i8* getelementptr inbounds (%struct_of_8_bytes_4_aligned, %struct_of_8_bytes_4_aligned* @f, i64 0, i32 1), align 4 |
| %conv = zext i8 %tmp to i32 |
| %tmp1 = load i8, i8* getelementptr inbounds (%struct_of_8_bytes_4_aligned, %struct_of_8_bytes_4_aligned* @f, i64 0, i32 3), align 1 |
| %conv2 = zext i8 %tmp1 to i32 |
| %add = add nsw i32 %conv, %conv2 |
| ret i32 %add |
| ; CHECK: @test_widening_bad |
| ; CHECK: call void @__tsan_read1 |
| ; CHECK: call void @__tsan_read1 |
| ; CHECK-NOT: call void @__tsan_read4 |
| ; CHECK: ret i32 |
| } |
