22ca38da25
Followup to D153624. Allows for better exit count calculations for loops checking heap allocations against null. Reviewed By: nikic Differential Revision: https://reviews.llvm.org/D154001
27 lines
1006 B
LLVM
27 lines
1006 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 2
|
|
; RUN: opt -passes='print<scalar-evolution>' -disable-output %s 2>&1 | FileCheck %s
|
|
|
|
define ptr @f() {
|
|
; CHECK-LABEL: 'f'
|
|
; CHECK-NEXT: Classifying expressions for: @f
|
|
; CHECK-NEXT: %alloc = tail call dereferenceable(64) ptr @malloc(i64 64)
|
|
; CHECK-NEXT: --> %alloc U: [1,-64) S: full-set
|
|
; CHECK-NEXT: Determining loop execution counts for: @f
|
|
;
|
|
%alloc = tail call dereferenceable(64) ptr @malloc(i64 64)
|
|
ret ptr %alloc
|
|
}
|
|
|
|
define ptr @f2() {
|
|
; CHECK-LABEL: 'f2'
|
|
; CHECK-NEXT: Classifying expressions for: @f2
|
|
; CHECK-NEXT: %alloc = tail call dereferenceable_or_null(64) ptr @malloc(i64 64)
|
|
; CHECK-NEXT: --> %alloc U: [0,-64) S: full-set
|
|
; CHECK-NEXT: Determining loop execution counts for: @f2
|
|
;
|
|
%alloc = tail call dereferenceable_or_null(64) ptr @malloc(i64 64)
|
|
ret ptr %alloc
|
|
}
|
|
|
|
declare noalias noundef ptr @malloc(i64 noundef) allockind("alloc,uninitialized") allocsize(0)
|