File: cmp-mem.ll

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (27 lines) | stat: -rw-r--r-- 1,277 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
; RUN: opt < %s -passes="print<cost-model>" 2>&1 -disable-output -mtriple=systemz-unknown -mcpu=z13 | FileCheck %s
;
; Test costs for i8 and i16 comparisons against memory with a small immediate.

define i32 @fun0(ptr %Src, ptr %Dst, i8 %Val) {
; CHECK: function 'fun0'
; CHECK: Cost Model: Found an estimated cost of 0 for instruction:   %Ld = load i8, ptr %Src
; CHECK: Cost Model: Found an estimated cost of 1 for instruction:   %Cmp = icmp eq i8 %Ld, 123
; CHECK: Cost Model: Found an estimated cost of 2 for instruction:   %Ret = zext i1 %Cmp to i32
; CHECK: Cost Model: Found an estimated cost of 1 for instruction:   ret i32 %Ret
  %Ld = load i8, ptr %Src
  %Cmp = icmp eq i8 %Ld, 123
  %Ret = zext i1 %Cmp to i32
  ret i32 %Ret
}

define i32 @fun1(ptr %Src, ptr %Dst, i16 %Val) {
; CHECK: function 'fun1'
; CHECK: Cost Model: Found an estimated cost of 0 for instruction:   %Ld = load i16, ptr %Src
; CHECK: Cost Model: Found an estimated cost of 1 for instruction:   %Cmp = icmp eq i16
; CHECK: Cost Model: Found an estimated cost of 2 for instruction:   %Ret = zext i1 %Cmp to i32
; CHECK: Cost Model: Found an estimated cost of 1 for instruction:   ret i32 %Ret
  %Ld = load i16, ptr %Src
  %Cmp = icmp eq i16 %Ld, 1234
  %Ret = zext i1 %Cmp to i32
  ret i32 %Ret
}