| Eric Christopher | cee313d | 2019-04-17 04:52:47 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -inline %s | FileCheck %s |
| 2 | ; RUN: opt -S -passes='cgscc(inline)' %s | FileCheck %s |
| 3 | |
| 4 | declare void @foo() |
| 5 | declare void @bar() |
| 6 | |
| 7 | define void @callee(i8* %arg) { |
| 8 | %cmp = icmp eq i8* %arg, null |
| 9 | br i1 %cmp, label %expensive, label %done |
| 10 | |
| 11 | ; This block is designed to be too expensive to inline. We can only inline |
| 12 | ; callee if this block is known to be dead. |
| 13 | expensive: |
| 14 | call void @foo() |
| 15 | call void @foo() |
| 16 | call void @foo() |
| 17 | call void @foo() |
| 18 | call void @foo() |
| 19 | call void @foo() |
| 20 | call void @foo() |
| 21 | call void @foo() |
| 22 | call void @foo() |
| 23 | call void @foo() |
| 24 | ret void |
| 25 | |
| 26 | done: |
| 27 | call void @bar() |
| 28 | ret void |
| 29 | } |
| 30 | |
| 31 | ; Positive test - arg is known non null |
| 32 | define void @caller(i8* nonnull %arg) { |
| 33 | ; CHECK-LABEL: @caller |
| 34 | ; CHECK: call void @bar() |
| 35 | call void @callee(i8* nonnull %arg) |
| 36 | ret void |
| 37 | } |
| 38 | |
| 39 | ; Negative test - arg is not known to be non null |
| 40 | define void @caller2(i8* %arg) { |
| 41 | ; CHECK-LABEL: @caller2 |
| 42 | ; CHECK: call void @callee( |
| 43 | call void @callee(i8* %arg) |
| 44 | ret void |
| 45 | } |
| 46 | |