File: load-and-test.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16.1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,388 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 (25 lines) | stat: -rw-r--r-- 1,152 bytes parent folder | download | duplicates (10) 
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
 
; RUN: opt < %s -cost-model -analyze -mtriple=systemz-unknown -mcpu=z13 | FileCheck %s
;
; Test that load and test results in 0 cost for the compare.

define i64 @fun0(i64* %Src, i64 %Arg) {
  %Ld1 = load i64, i64* %Src
  %Cmp = icmp eq i64 %Ld1, 0
  %S   = select i1 %Cmp, i64 %Arg, i64 %Ld1
  ret i64 %S
; CHECK: Printing analysis 'Cost Model Analysis' for function 'fun0':
; CHECK: Cost Model: Found an estimated cost of 1 for instruction:   %Ld1 = load i64, i64* %Src
; CHECK: Cost Model: Found an estimated cost of 0 for instruction:   %Cmp = icmp eq i64 %Ld1, 0
; CHECK: Cost Model: Found an estimated cost of 1 for instruction:   %S = select
}

define i32 @fun1(i32* %Src, i32 %Arg) {
  %Ld1 = load i32, i32* %Src
  %Cmp = icmp eq i32 %Ld1, 0
  %S   = select i1 %Cmp, i32 %Arg, i32 %Ld1
  ret i32 %S
; CHECK: Printing analysis 'Cost Model Analysis' for function 'fun1':
; CHECK: Cost Model: Found an estimated cost of 1 for instruction:   %Ld1 = load i32, i32* %Src
; CHECK: Cost Model: Found an estimated cost of 0 for instruction:   %Cmp = icmp eq i32 %Ld1, 0
; CHECK: Cost Model: Found an estimated cost of 1 for instruction:   %S = select
}