File: invariant-group-sroa.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (24 lines) | stat: -rw-r--r-- 662 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
 
; RUN: opt -passes='print<inline-cost>' -disable-output %s 2>&1 | FileCheck %s

; SROA analysis should yield non-zero savings for allocas passed through invariant group intrinsics
; CHECK: SROACostSavings: 10

declare ptr @llvm.launder.invariant.group.p0(ptr)
declare ptr @llvm.strip.invariant.group.p0(ptr)

declare void @b()

define i32 @f() {
  %a = alloca i32
  %r = call i32 @g(ptr %a)
  ret i32 %r
}

define i32 @g(ptr %a) {
  %a_inv_i8 = call ptr @llvm.launder.invariant.group.p0(ptr %a)
  %i1 = load i32, ptr %a_inv_i8
  %i2 = load i32, ptr %a_inv_i8
  %i3 = add i32 %i1, %i2
  %t = call ptr @llvm.strip.invariant.group.p0(ptr %a_inv_i8)
  ret i32 %i3
}