File: noreturn-notail.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2~deb10u1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 995,836 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (33 lines) | stat: -rw-r--r-- 784 bytes parent folder | download | duplicates (14) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
; RUN: llc -march=hexagon < %s | FileCheck %s
;
; Check that we are emitting a regular call instead of a tail call for a
; noreturn call in a function with a non-empty frame (to save instructions).
;
; CHECK: call f0
; CHECK-NOT: deallocframe

target triple = "hexagon"

; Function Attrs: noreturn
declare void @f0(i32, i32*) #0

declare void @f1(i32*)

define i64 @f2(i32 %a0, i32 %a1) {
b0:
  %v0 = alloca i32
  call void @f1(i32* %v0)
  %v1 = icmp ugt i32 %a0, 3
  br i1 %v1, label %b1, label %b2

b1:                                               ; preds = %b0
  tail call void @f0(i32 %a0, i32* %v0) #0
  unreachable

b2:                                               ; preds = %b0
  %v2 = mul i32 %a1, 7
  %v3 = zext i32 %v2 to i64
  ret i64 %v3
}

attributes #0 = { noreturn }