File: noreturn-notail.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
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 }