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llvm-mirror/test/Transforms/InstCombine/deref-alloc-fns.ll
Uday Bondhugula 1e0877a224 [InstCombine] Deduce attributes for aligned_alloc in InstCombine 
Make InstCombine aware of the aligned_alloc library function.

Signed-off-by: Uday Bondhugula <uday@polymagelabs.com>

Depends on D76970.

Differential Revision: https://reviews.llvm.org/D76971
2020-03-31 23:17:28 +05:30

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine -S < %s | FileCheck %s
declare noalias i8* @malloc(i64)
declare noalias i8* @calloc(i64, i64)
declare noalias i8* @realloc(i8* nocapture, i64)
declare noalias nonnull i8* @_Znam(i64) ; throwing version of 'new'
declare noalias nonnull i8* @_Znwm(i64) ; throwing version of 'new'
declare noalias i8* @strdup(i8*)
declare noalias i8* @aligned_alloc(i64, i64)
@.str = private unnamed_addr constant [6 x i8] c"hello\00", align 1
define noalias i8* @malloc_nonconstant_size(i64 %n) {
; CHECK-LABEL: @malloc_nonconstant_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @malloc(i64 [[N:%.*]])
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @malloc(i64 %n)
ret i8* %call
}
define noalias i8* @malloc_constant_size() {
; CHECK-LABEL: @malloc_constant_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias dereferenceable_or_null(40) i8* @malloc(i64 40)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @malloc(i64 40)
ret i8* %call
}
define noalias i8* @aligned_alloc_constant_size() {
; CHECK-LABEL: @aligned_alloc_constant_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias align 32 dereferenceable_or_null(512) i8* @aligned_alloc(i64 32, i64 512)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @aligned_alloc(i64 32, i64 512)
ret i8* %call
}
declare noalias i8* @foo(i8*, i8*, i8*)
define noalias i8* @aligned_alloc_dynamic_args(i64 %align, i64 %size) {
; CHECK-LABEL: @aligned_alloc_dynamic_args(
; CHECK-NEXT: tail call noalias dereferenceable_or_null(1024) i8* @aligned_alloc(i64 %{{.*}}, i64 1024)
; CHECK-NEXT: tail call noalias i8* @aligned_alloc(i64 0, i64 1024)
; CHECK-NEXT: tail call noalias i8* @aligned_alloc(i64 32, i64 %{{.*}})
;
%call = tail call noalias i8* @aligned_alloc(i64 %align, i64 1024)
%call_1 = tail call noalias i8* @aligned_alloc(i64 0, i64 1024)
%call_2 = tail call noalias i8* @aligned_alloc(i64 32, i64 %size)
call i8* @foo(i8* %call, i8* %call_1, i8* %call_2)
ret i8* %call
}
define noalias i8* @malloc_constant_size2() {
; CHECK-LABEL: @malloc_constant_size2(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias dereferenceable_or_null(80) i8* @malloc(i64 40)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias dereferenceable_or_null(80) i8* @malloc(i64 40)
ret i8* %call
}
define noalias i8* @malloc_constant_size3() {
; CHECK-LABEL: @malloc_constant_size3(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias dereferenceable(80) dereferenceable_or_null(40) i8* @malloc(i64 40)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias dereferenceable(80) i8* @malloc(i64 40)
ret i8* %call
}
define noalias i8* @malloc_constant_zero_size() {
; CHECK-LABEL: @malloc_constant_zero_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @malloc(i64 0)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @malloc(i64 0)
ret i8* %call
}
define noalias i8* @realloc_nonconstant_size(i8* %p, i64 %n) {
; CHECK-LABEL: @realloc_nonconstant_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @realloc(i8* [[P:%.*]], i64 [[N:%.*]])
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @realloc(i8* %p, i64 %n)
ret i8* %call
}
define noalias i8* @realloc_constant_zero_size(i8* %p) {
; CHECK-LABEL: @realloc_constant_zero_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @realloc(i8* [[P:%.*]], i64 0)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @realloc(i8* %p, i64 0)
ret i8* %call
}
define noalias i8* @realloc_constant_size(i8* %p) {
; CHECK-LABEL: @realloc_constant_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias dereferenceable_or_null(40) i8* @realloc(i8* [[P:%.*]], i64 40)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @realloc(i8* %p, i64 40)
ret i8* %call
}
define noalias i8* @calloc_nonconstant_size(i64 %n) {
; CHECK-LABEL: @calloc_nonconstant_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @calloc(i64 1, i64 [[N:%.*]])
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @calloc(i64 1, i64 %n)
ret i8* %call
}
define noalias i8* @calloc_nonconstant_size2(i64 %n) {
; CHECK-LABEL: @calloc_nonconstant_size2(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @calloc(i64 [[N:%.*]], i64 0)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @calloc(i64 %n, i64 0)
ret i8* %call
}
define noalias i8* @calloc_nonconstant_size3(i64 %n) {
; CHECK-LABEL: @calloc_nonconstant_size3(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @calloc(i64 [[N:%.*]], i64 [[N]])
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @calloc(i64 %n, i64 %n)
ret i8* %call
}
define noalias i8* @calloc_constant_zero_size() {
; CHECK-LABEL: @calloc_constant_zero_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @calloc(i64 0, i64 0)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @calloc(i64 0, i64 0)
ret i8* %call
}
define noalias i8* @calloc_constant_zero_size2(i64 %n) {
; CHECK-LABEL: @calloc_constant_zero_size2(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @calloc(i64 [[N:%.*]], i64 0)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @calloc(i64 %n, i64 0)
ret i8* %call
}
define noalias i8* @calloc_constant_zero_size3(i64 %n) {
; CHECK-LABEL: @calloc_constant_zero_size3(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @calloc(i64 0, i64 [[N:%.*]])
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @calloc(i64 0, i64 %n)
ret i8* %call
}
define noalias i8* @calloc_constant_zero_size4(i64 %n) {
; CHECK-LABEL: @calloc_constant_zero_size4(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @calloc(i64 0, i64 1)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @calloc(i64 0, i64 1)
ret i8* %call
}
define noalias i8* @calloc_constant_zero_size5(i64 %n) {
; CHECK-LABEL: @calloc_constant_zero_size5(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @calloc(i64 1, i64 0)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @calloc(i64 1, i64 0)
ret i8* %call
}
define noalias i8* @calloc_constant_size() {
; CHECK-LABEL: @calloc_constant_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias dereferenceable_or_null(128) i8* @calloc(i64 16, i64 8)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @calloc(i64 16, i64 8)
ret i8* %call
}
define noalias i8* @calloc_constant_size_overflow() {
; CHECK-LABEL: @calloc_constant_size_overflow(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @calloc(i64 2000000000000, i64 80000000000)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @calloc(i64 2000000000000, i64 80000000000)
ret i8* %call
}
define noalias i8* @op_new_nonconstant_size(i64 %n) {
; CHECK-LABEL: @op_new_nonconstant_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @_Znam(i64 [[N:%.*]])
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call i8* @_Znam(i64 %n)
ret i8* %call
}
define noalias i8* @op_new_constant_size() {
; CHECK-LABEL: @op_new_constant_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call dereferenceable(40) i8* @_Znam(i64 40)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call i8* @_Znam(i64 40)
ret i8* %call
}
define noalias i8* @op_new_constant_size2() {
; CHECK-LABEL: @op_new_constant_size2(
; CHECK-NEXT: [[CALL:%.*]] = tail call dereferenceable(40) i8* @_Znwm(i64 40)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call i8* @_Znwm(i64 40)
ret i8* %call
}
define noalias i8* @op_new_constant_zero_size() {
; CHECK-LABEL: @op_new_constant_zero_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @_Znam(i64 0)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call i8* @_Znam(i64 0)
ret i8* %call
}
define noalias i8* @strdup_constant_str() {
; CHECK-LABEL: @strdup_constant_str(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias dereferenceable_or_null(6) i8* @strdup(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0))
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @strdup(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0))
ret i8* %call
}
define noalias i8* @strdup_notconstant_str(i8 * %str) {
; CHECK-LABEL: @strdup_notconstant_str(
; CHECK-NEXT: [[CALL:%.*]] = tail call noalias i8* @strdup(i8* [[STR:%.*]])
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call noalias i8* @strdup(i8* %str)
ret i8* %call
}
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