| Dehao Chen | bd3ed3c | 2016-06-23 20:13:10 +0000 | [diff] [blame^] | 1 | // Test if PGO sample use preparation passes are executed correctly. |
| 2 | // |
| 3 | // Ensure that instcombine is executed after simplifycfg and sroa so that |
| 4 | // "a < 255" will not be converted to a * 256 < 255 * 256. |
| 5 | // RUN: %clang_cc1 -O2 -fprofile-sample-use=%S/Inputs/pgo-sample.prof %s -emit-llvm -o - 2>&1 | FileCheck %s |
| 6 | |
| 7 | void bar(int); |
| 8 | void foo(int x, int y, int z) { |
| 9 | int m; |
| 10 | for (m = 0; m < x ; m++) { |
| 11 | int a = (((y >> 8) & 0xff) * z) / 256; |
| 12 | bar(a < 255 ? a : 255); |
| 13 | } |
| 14 | } |
| 15 | |
| 16 | // CHECK-NOT: icmp slt i32 %mul, 65280 |