| Mandeep Singh Grang | ddcb956 | 2018-05-23 22:44:08 +0000 | [diff] [blame] | 1 | ; Check that command line option "-disable-tail-calls" overrides function |
| 2 | ; attribute "disable-tail-calls". |
| 3 | |
| 4 | ; RUN: llc < %s -mtriple=riscv32-unknown-elf \ |
| 5 | ; RUN: | FileCheck %s --check-prefixes=CALLER1,NOTAIL |
| 6 | ; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls \ |
| 7 | ; RUN: | FileCheck %s --check-prefixes=CALLER1,NOTAIL |
| 8 | ; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls=false \ |
| 9 | ; RUN: | FileCheck %s --check-prefixes=CALLER1,TAIL |
| 10 | |
| 11 | ; RUN: llc < %s -mtriple=riscv32-unknown-elf \ |
| 12 | ; RUN: | FileCheck %s --check-prefixes=CALLER2,TAIL |
| 13 | ; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls \ |
| 14 | ; RUN: | FileCheck %s --check-prefixes=CALLER2,NOTAIL |
| 15 | ; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls=false \ |
| 16 | ; RUN: | FileCheck %s --check-prefixes=CALLER2,TAIL |
| 17 | |
| 18 | ; RUN: llc < %s -mtriple=riscv32-unknown-elf \ |
| 19 | ; RUN: | FileCheck %s --check-prefixes=CALLER3,TAIL |
| 20 | ; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls \ |
| 21 | ; RUN: | FileCheck %s --check-prefixes=CALLER3,NOTAIL |
| 22 | ; RUN: llc < %s -mtriple=riscv32-unknown-elf -disable-tail-calls=false \ |
| 23 | ; RUN: | FileCheck %s --check-prefixes=CALLER3,TAIL |
| 24 | |
| 25 | ; CALLER1-LABEL: {{\_?}}caller1 |
| 26 | ; CALLER2-LABEL: {{\_?}}caller2 |
| 27 | ; CALLER3-LABEL: {{\_?}}caller3 |
| 28 | ; NOTAIL-NOT: tail callee |
| 29 | ; NOTAIL: call callee |
| 30 | ; TAIL: tail callee |
| 31 | ; TAIL-NOT: call callee |
| 32 | |
| 33 | ; Function with attribute #0 = { "disable-tail-calls"="true" } |
| 34 | define i32 @caller1(i32 %a) #0 { |
| 35 | entry: |
| 36 | %call = tail call i32 @callee(i32 %a) |
| 37 | ret i32 %call |
| 38 | } |
| 39 | |
| 40 | ; Function with attribute #1 = { "disable-tail-calls"="false" } |
| 41 | define i32 @caller2(i32 %a) #0 { |
| 42 | entry: |
| 43 | %call = tail call i32 @callee(i32 %a) |
| 44 | ret i32 %call |
| 45 | } |
| 46 | |
| 47 | define i32 @caller3(i32 %a) { |
| 48 | entry: |
| 49 | %call = tail call i32 @callee(i32 %a) |
| 50 | ret i32 %call |
| 51 | } |
| 52 | |
| 53 | declare i32 @callee(i32) |
| 54 | |
| 55 | attributes #0 = { "disable-tail-calls"="true" } |
| 56 | attributes #1 = { "disable-tail-calls"="false" } |