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llvm-project/llvm/test/Transforms/InstCombine/objsize-address-space.ll

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Change objectsize intrinsic to accept different address spaces. Bitcasting everything to i8* won't work. Autoupgrade the old intrinsic declarations to use the new mangling. llvm-svn: 192117
2013-10-08 02:06:48 +08:00
; RUN: opt -S -instcombine -o - %s | FileCheck %s
target datalayout = "e-p:32:32:32-p1:64:64:64-p2:8:8:8-p3:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:32"
declare i32 @llvm.objectsize.i32.p0i8(i8*, i1) nounwind readonly
declare i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)*, i1) nounwind readonly
declare i32 @llvm.objectsize.i32.p2i8(i8 addrspace(2)*, i1) nounwind readonly
declare i32 @llvm.objectsize.i32.p3i8(i8 addrspace(3)*, i1) nounwind readonly
declare i16 @llvm.objectsize.i16.p3i8(i8 addrspace(3)*, i1) nounwind readonly
@array_as2 = private addrspace(2) global [60 x i8] zeroinitializer, align 4
@array_as1_pointers = private global [10 x i32 addrspace(1)*] zeroinitializer, align 4
@array_as2_pointers = private global [24 x i32 addrspace(2)*] zeroinitializer, align 4
@array_as3_pointers = private global [42 x i32 addrspace(3)*] zeroinitializer, align 4
@array_as2_as1_pointer_pointers = private global [16 x i32 addrspace(2)* addrspace(1)*] zeroinitializer, align 4
@a_as3 = private addrspace(3) global [60 x i8] zeroinitializer, align 1
define i32 @foo_as3() nounwind {
; CHECK-LABEL: @foo_as3(
; CHECK-NEXT: ret i32 60
%1 = call i32 @llvm.objectsize.i32.p3i8(i8 addrspace(3)* getelementptr inbounds ([60 x i8] addrspace(3)* @a_as3, i32 0, i32 0), i1 false)
ret i32 %1
}
define i16 @foo_as3_i16() nounwind {
; CHECK-LABEL: @foo_as3_i16(
; CHECK-NEXT: ret i16 60
%1 = call i16 @llvm.objectsize.i16.p3i8(i8 addrspace(3)* getelementptr inbounds ([60 x i8] addrspace(3)* @a_as3, i32 0, i32 0), i1 false)
ret i16 %1
}
Use "weak alias" instead of "alias weak" Before this patch we had @a = weak global ... but @b = alias weak ... The patch changes aliases to look more like global variables. Looking at some really old code suggests that the reason was that the old bison based parser had a reduction for alias linkages and another one for global variable linkages. Putting the alias first avoided the reduce/reduce conflict. The days of the old .ll parser are long gone. The new one parses just "linkage" and a later check is responsible for deciding if a linkage is valid in a given context. llvm-svn: 214355
2014-07-31 06:51:54 +08:00
@a_alias = weak alias [60 x i8] addrspace(3)* @a_as3
Change objectsize intrinsic to accept different address spaces. Bitcasting everything to i8* won't work. Autoupgrade the old intrinsic declarations to use the new mangling. llvm-svn: 192117
2013-10-08 02:06:48 +08:00
define i32 @foo_alias() nounwind {
%1 = call i32 @llvm.objectsize.i32.p3i8(i8 addrspace(3)* getelementptr inbounds ([60 x i8] addrspace(3)* @a_alias, i32 0, i32 0), i1 false)
ret i32 %1
}
define i32 @array_as2_size() {
; CHECK-LABEL: @array_as2_size(
; CHECK-NEXT: ret i32 60
%bc = bitcast [60 x i8] addrspace(2)* @array_as2 to i8 addrspace(2)*
%1 = call i32 @llvm.objectsize.i32.p2i8(i8 addrspace(2)* %bc, i1 false)
ret i32 %1
}
define i32 @pointer_array_as1() {
; CHECK-LABEL: @pointer_array_as1(
; CHECK-NEXT: ret i32 80
Add addrspacecast instruction. Patch by Michele Scandale! llvm-svn: 194760
2013-11-15 09:34:59 +08:00
%bc = addrspacecast [10 x i32 addrspace(1)*]* @array_as1_pointers to i8 addrspace(1)*
Change objectsize intrinsic to accept different address spaces. Bitcasting everything to i8* won't work. Autoupgrade the old intrinsic declarations to use the new mangling. llvm-svn: 192117
2013-10-08 02:06:48 +08:00
%1 = call i32 @llvm.objectsize.i32.p1i8(i8 addrspace(1)* %bc, i1 false)
ret i32 %1
}
define i32 @pointer_array_as2() {
; CHECK-LABEL: @pointer_array_as2(
; CHECK-NEXT: ret i32 24
%bc = bitcast [24 x i32 addrspace(2)*]* @array_as2_pointers to i8*
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* %bc, i1 false)
ret i32 %1
}
define i32 @pointer_array_as3() {
; CHECK-LABEL: @pointer_array_as3(
; CHECK-NEXT: ret i32 84
%bc = bitcast [42 x i32 addrspace(3)*]* @array_as3_pointers to i8*
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* %bc, i1 false)
ret i32 %1
}
define i32 @pointer_pointer_array_as2_as1() {
; CHECK-LABEL: @pointer_pointer_array_as2_as1(
; CHECK-NEXT: ret i32 128
%bc = bitcast [16 x i32 addrspace(2)* addrspace(1)*]* @array_as2_as1_pointer_pointers to i8*
%1 = call i32 @llvm.objectsize.i32.p0i8(i8* %bc, i1 false)
ret i32 %1
}