Magic-Mirror/llvm-capstone
1
0
Fork 0
mirror of https://github.com/capstone-engine/llvm-capstone.git synced 2025-02-10 19:34:29 +00:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

[LowerConstantIntrinsics] Add test for objectsize of malloc (NFC)

Browse Source 
This is currently not folded with a plain -lower-constant-intrinsics
invocation, because TLI is an optional dependency.
This commit is contained in:
Nikita Popov 2022-03-18 14:49:42 +01:00
parent 99d239341c
commit 28c53b384d
1 changed files with 55 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

79
llvm/test/Transforms/LowerConstantIntrinsics/objectsize_basic.ll
View File

@ -1,3 +1,4 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -lower-constant-intrinsics -S < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
@ -7,92 +8,110 @@ declare i64 @llvm.objectsize.i64(i8*, i1, i1, i1) nounwind readonly
declare i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)*, i1, i1, i1) nounwind readonly
declare void @llvm.trap() nounwind
; CHECK-LABEL: @test1(
; objectsize should fold to a constant, which causes the branch to fold to an
; uncond branch.
define i32 @test1(i8* %ptr) nounwind ssp noredzone align 2 {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[T:%.*]]
; CHECK: T:
; CHECK-NEXT: ret i32 4
;
entry:
%0 = tail call i64 @llvm.objectsize.i64(i8* %ptr, i1 false, i1 false, i1 false)
%1 = icmp ugt i64 %0, 3
br i1 %1, label %T, label %trap
; CHECK: entry:
; CHECK-NOT: label %trap
trap: ; preds = %0, %entry
tail call void @llvm.trap() noreturn nounwind
unreachable
T:
; CHECK: ret i32 4
ret i32 4
}
; CHECK-LABEL: @test_objectsize_null_flag(
define i64 @test_objectsize_null_flag(i8* %ptr) {
; CHECK-LABEL: @test_objectsize_null_flag(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 -1
;
entry:
; CHECK: ret i64 -1
%0 = tail call i64 @llvm.objectsize.i64(i8* null, i1 false, i1 true, i1 false)
ret i64 %0
}
; CHECK-LABEL: @test_objectsize_null_flag_min(
define i64 @test_objectsize_null_flag_min(i8* %ptr) {
; CHECK-LABEL: @test_objectsize_null_flag_min(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 0
;
entry:
; CHECK: ret i64 0
%0 = tail call i64 @llvm.objectsize.i64(i8* null, i1 true, i1 true, i1 false)
ret i64 %0
}
; Test foldable null pointers because we evaluate them with non-exact modes in
; CodeGenPrepare.
; CHECK-LABEL: @test_objectsize_null_flag_noas0(
define i64 @test_objectsize_null_flag_noas0() {
; CHECK-LABEL: @test_objectsize_null_flag_noas0(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 -1
;
entry:
; CHECK: ret i64 -1
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 false,
i1 true, i1 false)
i1 true, i1 false)
ret i64 %0
}
; CHECK-LABEL: @test_objectsize_null_flag_min_noas0(
define i64 @test_objectsize_null_flag_min_noas0() {
; CHECK-LABEL: @test_objectsize_null_flag_min_noas0(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 0
;
entry:
; CHECK: ret i64 0
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 true,
i1 true, i1 false)
i1 true, i1 false)
ret i64 %0
}
; CHECK-LABEL: @test_objectsize_null_known_flag_noas0
define i64 @test_objectsize_null_known_flag_noas0() {
; CHECK-LABEL: @test_objectsize_null_known_flag_noas0(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 -1
;
entry:
; CHECK: ret i64 -1
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 false,
i1 false, i1 false)
i1 false, i1 false)
ret i64 %0
}
; CHECK-LABEL: @test_objectsize_null_known_flag_min_noas0
define i64 @test_objectsize_null_known_flag_min_noas0() {
; CHECK-LABEL: @test_objectsize_null_known_flag_min_noas0(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i64 0
;
entry:
; CHECK: ret i64 0
%0 = tail call i64 @llvm.objectsize.i64.p1i8(i8 addrspace(1)* null, i1 true,
i1 false, i1 false)
i1 false, i1 false)
ret i64 %0
}
; CHECK-LABEL: @test_objectsize_byval_arg(
; CHECK: ret i64 42
define i64 @test_objectsize_byval_arg([42 x i8]* byval([42 x i8]) %ptr) {
; CHECK-LABEL: @test_objectsize_byval_arg(
; CHECK-NEXT: [[CAST:%.*]] = bitcast [42 x i8]* [[PTR:%.*]] to i8*
; CHECK-NEXT: ret i64 42
;
%cast = bitcast [42 x i8]* %ptr to i8*
%size = tail call i64 @llvm.objectsize.i64(i8* %cast, i1 true, i1 false, i1 false)
ret i64 %size
}
; CHECK-LABEL: @test_objectsize_byref_arg(
; CHECK: ret i64 42
define i64 @test_objectsize_byref_arg([42 x i8]* byref([42 x i8]) %ptr) {
; CHECK-LABEL: @test_objectsize_byref_arg(
; CHECK-NEXT: [[CAST:%.*]] = bitcast [42 x i8]* [[PTR:%.*]] to i8*
; CHECK-NEXT: ret i64 42
;
%cast = bitcast [42 x i8]* %ptr to i8*
%size = tail call i64 @llvm.objectsize.i64(i8* %cast, i1 true, i1 false, i1 false)
ret i64 %size
@ -119,3 +138,15 @@ define i64 @vla_pointer_size_mismatch(i42 %x) {
%objsize = call i64 @llvm.objectsize.i64(i8* %G1, i1 false, i1 true, i1 true)
ret i64 %objsize
}
declare i8* @malloc(i64)
define i64 @test_objectsize_malloc() {
; CHECK-LABEL: @test_objectsize_malloc(
; CHECK-NEXT: [[PTR:%.*]] = call i8* @malloc(i64 16)
; CHECK-NEXT: ret i64 -1
;
%ptr = call i8* @malloc(i64 16)
%objsize = call i64 @llvm.objectsize.i64(i8* %ptr, i1 false, i1 true, i1 true)
ret i64 %objsize
}