| Marcin Koscielnicki | fd4b6b9 | 2016-06-17 20:24:07 +0000 | [diff] [blame^] | 1 | ; Test that strcmp won't be converted to CLST if calls are |
| 2 | ; marked with nobuiltin, eg. for sanitizers. |
| 3 | ; |
| 4 | ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| 5 | |
| 6 | declare signext i32 @strcmp(i8 *%src1, i8 *%src2) |
| 7 | |
| 8 | ; Check a case where the result is used as an integer. |
| 9 | define i32 @f1(i8 *%src1, i8 *%src2) { |
| 10 | ; CHECK-LABEL: f1: |
| 11 | ; CHECK-NOT: clst |
| 12 | ; CHECK: brasl %r14, strcmp |
| 13 | ; CHECK: br %r14 |
| 14 | %res = call i32 @strcmp(i8 *%src1, i8 *%src2) nobuiltin |
| 15 | ret i32 %res |
| 16 | } |
| 17 | |
| 18 | ; Check a case where the result is tested for equality. |
| 19 | define void @f2(i8 *%src1, i8 *%src2, i32 *%dest) { |
| 20 | ; CHECK-LABEL: f2: |
| 21 | ; CHECK-NOT: clst |
| 22 | ; CHECK: brasl %r14, strcmp |
| 23 | ; CHECK: br %r14 |
| 24 | %res = call i32 @strcmp(i8 *%src1, i8 *%src2) nobuiltin |
| 25 | %cmp = icmp eq i32 %res, 0 |
| 26 | br i1 %cmp, label %exit, label %store |
| 27 | |
| 28 | store: |
| 29 | store i32 0, i32 *%dest |
| 30 | br label %exit |
| 31 | |
| 32 | exit: |
| 33 | ret void |
| 34 | } |
| 35 | |
| 36 | ; Test a case where the result is used both as an integer and for |
| 37 | ; branching. |
| 38 | define i32 @f3(i8 *%src1, i8 *%src2, i32 *%dest) { |
| 39 | ; CHECK-LABEL: f3: |
| 40 | ; CHECK-NOT: clst |
| 41 | ; CHECK: brasl %r14, strcmp |
| 42 | ; CHECK: br %r14 |
| 43 | entry: |
| 44 | %res = call i32 @strcmp(i8 *%src1, i8 *%src2) nobuiltin |
| 45 | %cmp = icmp slt i32 %res, 0 |
| 46 | br i1 %cmp, label %exit, label %store |
| 47 | |
| 48 | store: |
| 49 | store i32 0, i32 *%dest |
| 50 | br label %exit |
| 51 | |
| 52 | exit: |
| 53 | ret i32 %res |
| 54 | } |