File: load-ptr-cmp-fold.ll

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (11 lines) | stat: -rw-r--r-- 527 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
 
; RUN: opt < %s -cost-model -analyze -mtriple=systemz-unknown -mcpu=z13 | FileCheck %s

; Test that the cost heuristic for a folded load works also for a pointer operand.
define void @fun0(i64* %lhs, i64** %rhs_ptr) {
  %rhs = load i64*, i64** %rhs_ptr
  %c = icmp eq i64* %lhs, %rhs
  ret void
; CHECK: Printing analysis 'Cost Model Analysis' for function 'fun0':
; CHECK: Cost Model: Found an estimated cost of 0 for instruction:   %rhs = load
; CHECK: Cost Model: Found an estimated cost of 1 for instruction:   %c = icmp
}