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llvm/test/CodeGen/ARM/ssp-data-layout.ll
Josh Magee cde5c26c46 [stackprotector] Implement the sspstrong rules for stack layout. 
This changes the PrologueEpilogInserter and LocalStackSlotAllocation passes to
follow the extended stack layout rules for sspstrong and sspreq.

The sspstrong layout rules are:
 1. Large arrays and structures containing large arrays (>= ssp-buffer-size)
are closest to the stack protector.
 2. Small arrays and structures containing small arrays (< ssp-buffer-size) are
2nd closest to the protector.
 3. Variables that have had their address taken are 3rd closest to the
protector.


Differential Revision: http://llvm-reviews.chandlerc.com/D2546


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200601 91177308-0d34-0410-b5e6-96231b3b80d8
2014-02-01 01:36:16 +00:00

529 lines
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; RUN: llc < %s -disable-fp-elim -march=arm -mcpu=cortex-a8 -mtriple arm-linux-gnu -o - | FileCheck %s
; This test is fairly fragile. The goal is to ensure that "large" stack
; objects are allocated closest to the stack protector (i.e., farthest away
; from the Stack Pointer.) In standard SSP mode this means that large (>=
; ssp-buffer-size) arrays and structures containing such arrays are
; closet to the protector. With sspstrong and sspreq this means large
; arrays/structures-with-arrays are closest, followed by small (< ssp-buffer-size)
; arrays/structures-with-arrays, and then addr-taken variables.
;
; Ideally, we only want verify that the objects appear in the correct groups
; and that the groups have the correct relative stack offset. The ordering
; within a group is not relevant to this test. Unfortunately, there is not
; an elegant way to do this, so just match the offset for each object.
%struct.struct_large_char = type { [8 x i8] }
%struct.struct_large_char2 = type { [2 x i8], [8 x i8] }
%struct.struct_small_char = type { [2 x i8] }
%struct.struct_large_nonchar = type { [8 x i32] }
%struct.struct_small_nonchar = type { [2 x i16] }
define void @layout_ssp() ssp {
entry:
; Expected stack layout for ssp is
; 180 large_char . Group 1, nested arrays, arrays >= ssp-buffer-size
; 172 struct_large_char .
; 168 scalar1 | Everything else
; 164 scalar2
; 160 scalar3
; 156 addr-of
; 152 small_nonchar (84+68)
; 112 large_nonchar
; 110 small_char
; 108 struct_small_char
; 72 struct_large_nonchar
; 68 struct_small_nonchar
; CHECK: layout_ssp:
; r[[SP]] is used as an offset into the stack later
; CHECK: add r[[SP:[0-9]+]], sp, #68
; CHECK: bl get_scalar1
; CHECK: str r0, [sp, #168]
; CHECK: bl end_scalar1
; CHECK: bl get_scalar2
; CHECK: str r0, [sp, #164]
; CHECK: bl end_scalar2
; CHECK: bl get_scalar3
; CHECK: str r0, [sp, #160]
; CHECK: bl end_scalar3
; CHECK: bl get_addrof
; CHECK: str r0, [sp, #156]
; CHECK: bl end_addrof
; CHECK: get_small_nonchar
; CHECK: strh r0, [r[[SP]], #84]
; CHECK: bl end_small_nonchar
; CHECK: bl get_large_nonchar
; CHECK: str r0, [sp, #112]
; CHECK: bl end_large_nonchar
; CHECK: bl get_small_char
; CHECK: strb r0, [sp, #110]
; CHECK: bl end_small_char
; CHECK: bl get_large_char
; CHECK: strb r0, [sp, #180]
; CHECK: bl end_large_char
; CHECK: bl get_struct_large_char
; CHECK: strb r0, [sp, #172]
; CHECK: bl end_struct_large_char
; CHECK: bl get_struct_small_char
; CHECK: strb r0, [sp, #108]
; CHECK: bl end_struct_small_char
; CHECK: bl get_struct_large_nonchar
; CHECK:str r0, [sp, #72]
; CHECK: bl end_struct_large_nonchar
; CHECK: bl get_struct_small_nonchar
; CHECK: strh r0, [r[[SP]]]
; CHECK: bl end_struct_small_nonchar
%x = alloca i32, align 4
%y = alloca i32, align 4
%z = alloca i32, align 4
%ptr = alloca i32, align 4
%small2 = alloca [2 x i16], align 2
%large2 = alloca [8 x i32], align 16
%small = alloca [2 x i8], align 1
%large = alloca [8 x i8], align 1
%a = alloca %struct.struct_large_char, align 1
%b = alloca %struct.struct_small_char, align 1
%c = alloca %struct.struct_large_nonchar, align 8
%d = alloca %struct.struct_small_nonchar, align 2
%call = call i32 @get_scalar1()
store i32 %call, i32* %x, align 4
call void @end_scalar1()
%call1 = call i32 @get_scalar2()
store i32 %call1, i32* %y, align 4
call void @end_scalar2()
%call2 = call i32 @get_scalar3()
store i32 %call2, i32* %z, align 4
call void @end_scalar3()
%call3 = call i32 @get_addrof()
store i32 %call3, i32* %ptr, align 4
call void @end_addrof()
%call4 = call signext i16 @get_small_nonchar()
%arrayidx = getelementptr inbounds [2 x i16]* %small2, i32 0, i64 0
store i16 %call4, i16* %arrayidx, align 2
call void @end_small_nonchar()
%call5 = call i32 @get_large_nonchar()
%arrayidx6 = getelementptr inbounds [8 x i32]* %large2, i32 0, i64 0
store i32 %call5, i32* %arrayidx6, align 4
call void @end_large_nonchar()
%call7 = call signext i8 @get_small_char()
%arrayidx8 = getelementptr inbounds [2 x i8]* %small, i32 0, i64 0
store i8 %call7, i8* %arrayidx8, align 1
call void @end_small_char()
%call9 = call signext i8 @get_large_char()
%arrayidx10 = getelementptr inbounds [8 x i8]* %large, i32 0, i64 0
store i8 %call9, i8* %arrayidx10, align 1
call void @end_large_char()
%call11 = call signext i8 @get_struct_large_char()
%foo = getelementptr inbounds %struct.struct_large_char* %a, i32 0, i32 0
%arrayidx12 = getelementptr inbounds [8 x i8]* %foo, i32 0, i64 0
store i8 %call11, i8* %arrayidx12, align 1
call void @end_struct_large_char()
%call13 = call signext i8 @get_struct_small_char()
%foo14 = getelementptr inbounds %struct.struct_small_char* %b, i32 0, i32 0
%arrayidx15 = getelementptr inbounds [2 x i8]* %foo14, i32 0, i64 0
store i8 %call13, i8* %arrayidx15, align 1
call void @end_struct_small_char()
%call16 = call i32 @get_struct_large_nonchar()
%foo17 = getelementptr inbounds %struct.struct_large_nonchar* %c, i32 0, i32 0
%arrayidx18 = getelementptr inbounds [8 x i32]* %foo17, i32 0, i64 0
store i32 %call16, i32* %arrayidx18, align 4
call void @end_struct_large_nonchar()
%call19 = call signext i16 @get_struct_small_nonchar()
%foo20 = getelementptr inbounds %struct.struct_small_nonchar* %d, i32 0, i32 0
%arrayidx21 = getelementptr inbounds [2 x i16]* %foo20, i32 0, i64 0
store i16 %call19, i16* %arrayidx21, align 2
call void @end_struct_small_nonchar()
%arraydecay = getelementptr inbounds [8 x i8]* %large, i32 0, i32 0
%arraydecay22 = getelementptr inbounds [2 x i8]* %small, i32 0, i32 0
%arraydecay23 = getelementptr inbounds [8 x i32]* %large2, i32 0, i32 0
%arraydecay24 = getelementptr inbounds [2 x i16]* %small2, i32 0, i32 0
%0 = load i32* %x, align 4
%1 = load i32* %y, align 4
%2 = load i32* %z, align 4
%coerce.dive = getelementptr %struct.struct_large_char* %a, i32 0, i32 0
%3 = bitcast [8 x i8]* %coerce.dive to i64*
%4 = load i64* %3, align 1
%coerce.dive25 = getelementptr %struct.struct_small_char* %b, i32 0, i32 0
%5 = bitcast [2 x i8]* %coerce.dive25 to i16*
%6 = load i16* %5, align 1
%coerce.dive26 = getelementptr %struct.struct_small_nonchar* %d, i32 0, i32 0
%7 = bitcast [2 x i16]* %coerce.dive26 to i32*
%8 = load i32* %7, align 1
call void @takes_all(i64 %4, i16 %6, %struct.struct_large_nonchar* byval align 8 %c, i32 %8, i8* %arraydecay, i8* %arraydecay22, i32* %arraydecay23, i16* %arraydecay24, i32* %ptr, i32 %0, i32 %1, i32 %2)
ret void
}
define void @layout_sspstrong() sspstrong {
entry:
; Expected stack layout for sspstrong is
; 144 large_nonchar . Group 1, nested arrays,
; 136 large_char . arrays >= ssp-buffer-size
; 128 struct_large_char .
; 96 struct_large_nonchar .
; 84+8 small_non_char | Group 2, nested arrays,
; 90 small_char | arrays < ssp-buffer-size
; 88 struct_small_char |
; 84 struct_small_nonchar |
; 80 addrof * Group 3, addr-of local
; 76 scalar1 + Group 4, everything else
; 72 scalar2 +
; 68 scalar3 +
;
; CHECK: layout_sspstrong:
; r[[SP]] is used as an offset into the stack later
; CHECK: add r[[SP:[0-9]+]], sp, #84
; CHECK: bl get_scalar1
; CHECK: str r0, [sp, #76]
; CHECK: bl end_scalar1
; CHECK: bl get_scalar2
; CHECK: str r0, [sp, #72]
; CHECK: bl end_scalar2
; CHECK: bl get_scalar3
; CHECK: str r0, [sp, #68]
; CHECK: bl end_scalar3
; CHECK: bl get_addrof
; CHECK: str r0, [sp, #80]
; CHECK: bl end_addrof
; CHECK: get_small_nonchar
; CHECK: strh r0, [r[[SP]], #8]
; CHECK: bl end_small_nonchar
; CHECK: bl get_large_nonchar
; CHECK: str r0, [sp, #144]
; CHECK: bl end_large_nonchar
; CHECK: bl get_small_char
; CHECK: strb r0, [sp, #90]
; CHECK: bl end_small_char
; CHECK: bl get_large_char
; CHECK: strb r0, [sp, #136]
; CHECK: bl end_large_char
; CHECK: bl get_struct_large_char
; CHECK: strb r0, [sp, #128]
; CHECK: bl end_struct_large_char
; CHECK: bl get_struct_small_char
; CHECK: strb r0, [sp, #88]
; CHECK: bl end_struct_small_char
; CHECK: bl get_struct_large_nonchar
; CHECK: str r0, [sp, #96]
; CHECK: bl end_struct_large_nonchar
; CHECK: bl get_struct_small_nonchar
; CHECK: strh r0, [r[[SP]]]
; CHECK: bl end_struct_small_nonchar
%x = alloca i32, align 4
%y = alloca i32, align 4
%z = alloca i32, align 4
%ptr = alloca i32, align 4
%small2 = alloca [2 x i16], align 2
%large2 = alloca [8 x i32], align 16
%small = alloca [2 x i8], align 1
%large = alloca [8 x i8], align 1
%a = alloca %struct.struct_large_char, align 1
%b = alloca %struct.struct_small_char, align 1
%c = alloca %struct.struct_large_nonchar, align 8
%d = alloca %struct.struct_small_nonchar, align 2
%call = call i32 @get_scalar1()
store i32 %call, i32* %x, align 4
call void @end_scalar1()
%call1 = call i32 @get_scalar2()
store i32 %call1, i32* %y, align 4
call void @end_scalar2()
%call2 = call i32 @get_scalar3()
store i32 %call2, i32* %z, align 4
call void @end_scalar3()
%call3 = call i32 @get_addrof()
store i32 %call3, i32* %ptr, align 4
call void @end_addrof()
%call4 = call signext i16 @get_small_nonchar()
%arrayidx = getelementptr inbounds [2 x i16]* %small2, i32 0, i64 0
store i16 %call4, i16* %arrayidx, align 2
call void @end_small_nonchar()
%call5 = call i32 @get_large_nonchar()
%arrayidx6 = getelementptr inbounds [8 x i32]* %large2, i32 0, i64 0
store i32 %call5, i32* %arrayidx6, align 4
call void @end_large_nonchar()
%call7 = call signext i8 @get_small_char()
%arrayidx8 = getelementptr inbounds [2 x i8]* %small, i32 0, i64 0
store i8 %call7, i8* %arrayidx8, align 1
call void @end_small_char()
%call9 = call signext i8 @get_large_char()
%arrayidx10 = getelementptr inbounds [8 x i8]* %large, i32 0, i64 0
store i8 %call9, i8* %arrayidx10, align 1
call void @end_large_char()
%call11 = call signext i8 @get_struct_large_char()
%foo = getelementptr inbounds %struct.struct_large_char* %a, i32 0, i32 0
%arrayidx12 = getelementptr inbounds [8 x i8]* %foo, i32 0, i64 0
store i8 %call11, i8* %arrayidx12, align 1
call void @end_struct_large_char()
%call13 = call signext i8 @get_struct_small_char()
%foo14 = getelementptr inbounds %struct.struct_small_char* %b, i32 0, i32 0
%arrayidx15 = getelementptr inbounds [2 x i8]* %foo14, i32 0, i64 0
store i8 %call13, i8* %arrayidx15, align 1
call void @end_struct_small_char()
%call16 = call i32 @get_struct_large_nonchar()
%foo17 = getelementptr inbounds %struct.struct_large_nonchar* %c, i32 0, i32 0
%arrayidx18 = getelementptr inbounds [8 x i32]* %foo17, i32 0, i64 0
store i32 %call16, i32* %arrayidx18, align 4
call void @end_struct_large_nonchar()
%call19 = call signext i16 @get_struct_small_nonchar()
%foo20 = getelementptr inbounds %struct.struct_small_nonchar* %d, i32 0, i32 0
%arrayidx21 = getelementptr inbounds [2 x i16]* %foo20, i32 0, i64 0
store i16 %call19, i16* %arrayidx21, align 2
call void @end_struct_small_nonchar()
%arraydecay = getelementptr inbounds [8 x i8]* %large, i32 0, i32 0
%arraydecay22 = getelementptr inbounds [2 x i8]* %small, i32 0, i32 0
%arraydecay23 = getelementptr inbounds [8 x i32]* %large2, i32 0, i32 0
%arraydecay24 = getelementptr inbounds [2 x i16]* %small2, i32 0, i32 0
%0 = load i32* %x, align 4
%1 = load i32* %y, align 4
%2 = load i32* %z, align 4
%coerce.dive = getelementptr %struct.struct_large_char* %a, i32 0, i32 0
%3 = bitcast [8 x i8]* %coerce.dive to i64*
%4 = load i64* %3, align 1
%coerce.dive25 = getelementptr %struct.struct_small_char* %b, i32 0, i32 0
%5 = bitcast [2 x i8]* %coerce.dive25 to i16*
%6 = load i16* %5, align 1
%coerce.dive26 = getelementptr %struct.struct_small_nonchar* %d, i32 0, i32 0
%7 = bitcast [2 x i16]* %coerce.dive26 to i32*
%8 = load i32* %7, align 1
call void @takes_all(i64 %4, i16 %6, %struct.struct_large_nonchar* byval align 8 %c, i32 %8, i8* %arraydecay, i8* %arraydecay22, i32* %arraydecay23, i16* %arraydecay24, i32* %ptr, i32 %0, i32 %1, i32 %2)
ret void
}
define void @layout_sspreq() sspreq {
entry:
; Expected stack layout for sspreq is the same as sspstrong
;
; CHECK: layout_sspreq:
; r[[SP]] is used as an offset into the stack later
; CHECK: add r[[SP:[0-9]+]], sp, #84
; CHECK: bl get_scalar1
; CHECK: str r0, [sp, #76]
; CHECK: bl end_scalar1
; CHECK: bl get_scalar2
; CHECK: str r0, [sp, #72]
; CHECK: bl end_scalar2
; CHECK: bl get_scalar3
; CHECK: str r0, [sp, #68]
; CHECK: bl end_scalar3
; CHECK: bl get_addrof
; CHECK: str r0, [sp, #80]
; CHECK: bl end_addrof
; CHECK: get_small_nonchar
; CHECK: strh r0, [r[[SP]], #8]
; CHECK: bl end_small_nonchar
; CHECK: bl get_large_nonchar
; CHECK: str r0, [sp, #144]
; CHECK: bl end_large_nonchar
; CHECK: bl get_small_char
; CHECK: strb r0, [sp, #90]
; CHECK: bl end_small_char
; CHECK: bl get_large_char
; CHECK: strb r0, [sp, #136]
; CHECK: bl end_large_char
; CHECK: bl get_struct_large_char
; CHECK: strb r0, [sp, #128]
; CHECK: bl end_struct_large_char
; CHECK: bl get_struct_small_char
; CHECK: strb r0, [sp, #88]
; CHECK: bl end_struct_small_char
; CHECK: bl get_struct_large_nonchar
; CHECK: str r0, [sp, #96]
; CHECK: bl end_struct_large_nonchar
; CHECK: bl get_struct_small_nonchar
; CHECK: strh r0, [r[[SP]]]
; CHECK: bl end_struct_small_nonchar
%x = alloca i32, align 4
%y = alloca i32, align 4
%z = alloca i32, align 4
%ptr = alloca i32, align 4
%small2 = alloca [2 x i16], align 2
%large2 = alloca [8 x i32], align 16
%small = alloca [2 x i8], align 1
%large = alloca [8 x i8], align 1
%a = alloca %struct.struct_large_char, align 1
%b = alloca %struct.struct_small_char, align 1
%c = alloca %struct.struct_large_nonchar, align 8
%d = alloca %struct.struct_small_nonchar, align 2
%call = call i32 @get_scalar1()
store i32 %call, i32* %x, align 4
call void @end_scalar1()
%call1 = call i32 @get_scalar2()
store i32 %call1, i32* %y, align 4
call void @end_scalar2()
%call2 = call i32 @get_scalar3()
store i32 %call2, i32* %z, align 4
call void @end_scalar3()
%call3 = call i32 @get_addrof()
store i32 %call3, i32* %ptr, align 4
call void @end_addrof()
%call4 = call signext i16 @get_small_nonchar()
%arrayidx = getelementptr inbounds [2 x i16]* %small2, i32 0, i64 0
store i16 %call4, i16* %arrayidx, align 2
call void @end_small_nonchar()
%call5 = call i32 @get_large_nonchar()
%arrayidx6 = getelementptr inbounds [8 x i32]* %large2, i32 0, i64 0
store i32 %call5, i32* %arrayidx6, align 4
call void @end_large_nonchar()
%call7 = call signext i8 @get_small_char()
%arrayidx8 = getelementptr inbounds [2 x i8]* %small, i32 0, i64 0
store i8 %call7, i8* %arrayidx8, align 1
call void @end_small_char()
%call9 = call signext i8 @get_large_char()
%arrayidx10 = getelementptr inbounds [8 x i8]* %large, i32 0, i64 0
store i8 %call9, i8* %arrayidx10, align 1
call void @end_large_char()
%call11 = call signext i8 @get_struct_large_char()
%foo = getelementptr inbounds %struct.struct_large_char* %a, i32 0, i32 0
%arrayidx12 = getelementptr inbounds [8 x i8]* %foo, i32 0, i64 0
store i8 %call11, i8* %arrayidx12, align 1
call void @end_struct_large_char()
%call13 = call signext i8 @get_struct_small_char()
%foo14 = getelementptr inbounds %struct.struct_small_char* %b, i32 0, i32 0
%arrayidx15 = getelementptr inbounds [2 x i8]* %foo14, i32 0, i64 0
store i8 %call13, i8* %arrayidx15, align 1
call void @end_struct_small_char()
%call16 = call i32 @get_struct_large_nonchar()
%foo17 = getelementptr inbounds %struct.struct_large_nonchar* %c, i32 0, i32 0
%arrayidx18 = getelementptr inbounds [8 x i32]* %foo17, i32 0, i64 0
store i32 %call16, i32* %arrayidx18, align 4
call void @end_struct_large_nonchar()
%call19 = call signext i16 @get_struct_small_nonchar()
%foo20 = getelementptr inbounds %struct.struct_small_nonchar* %d, i32 0, i32 0
%arrayidx21 = getelementptr inbounds [2 x i16]* %foo20, i32 0, i64 0
store i16 %call19, i16* %arrayidx21, align 2
call void @end_struct_small_nonchar()
%arraydecay = getelementptr inbounds [8 x i8]* %large, i32 0, i32 0
%arraydecay22 = getelementptr inbounds [2 x i8]* %small, i32 0, i32 0
%arraydecay23 = getelementptr inbounds [8 x i32]* %large2, i32 0, i32 0
%arraydecay24 = getelementptr inbounds [2 x i16]* %small2, i32 0, i32 0
%0 = load i32* %x, align 4
%1 = load i32* %y, align 4
%2 = load i32* %z, align 4
%coerce.dive = getelementptr %struct.struct_large_char* %a, i32 0, i32 0
%3 = bitcast [8 x i8]* %coerce.dive to i64*
%4 = load i64* %3, align 1
%coerce.dive25 = getelementptr %struct.struct_small_char* %b, i32 0, i32 0
%5 = bitcast [2 x i8]* %coerce.dive25 to i16*
%6 = load i16* %5, align 1
%coerce.dive26 = getelementptr %struct.struct_small_nonchar* %d, i32 0, i32 0
%7 = bitcast [2 x i16]* %coerce.dive26 to i32*
%8 = load i32* %7, align 1
call void @takes_all(i64 %4, i16 %6, %struct.struct_large_nonchar* byval align 8 %c, i32 %8, i8* %arraydecay, i8* %arraydecay22, i32* %arraydecay23, i16* %arraydecay24, i32* %ptr, i32 %0, i32 %1, i32 %2)
ret void
}
define void @struct_with_protectable_arrays() sspstrong {
entry:
; Check to ensure that a structure which contains a small array followed by a
; large array is assigned to the stack properly as a large object.
; CHECK: struct_with_protectable_arrays:
; CHECK: bl get_struct_small_char
; CHECK: strb r0, [sp, #68]
; CHECK: bl end_struct_small_char
; CHECK: bl get_struct_large_char2
; CHECK: strb r0, [sp, #106]
; CHECK: bl end_struct_large_char2
%a = alloca %struct.struct_small_char, align 1
%b = alloca %struct.struct_large_char2, align 1
%d1 = alloca %struct.struct_large_nonchar, align 8
%d2 = alloca %struct.struct_small_nonchar, align 2
%call = call signext i8 @get_struct_small_char()
%foo = getelementptr inbounds %struct.struct_small_char* %a, i32 0, i32 0
%arrayidx = getelementptr inbounds [2 x i8]* %foo, i32 0, i64 0
store i8 %call, i8* %arrayidx, align 1
call void @end_struct_small_char()
%call1 = call signext i8 @get_struct_large_char2()
%foo2 = getelementptr inbounds %struct.struct_large_char2* %b, i32 0, i32 1
%arrayidx3 = getelementptr inbounds [8 x i8]* %foo2, i32 0, i64 0
store i8 %call1, i8* %arrayidx3, align 1
call void @end_struct_large_char2()
%0 = bitcast %struct.struct_large_char2* %b to %struct.struct_large_char*
%coerce.dive = getelementptr %struct.struct_large_char* %0, i32 0, i32 0
%1 = bitcast [8 x i8]* %coerce.dive to i64*
%2 = load i64* %1, align 1
%coerce.dive4 = getelementptr %struct.struct_small_char* %a, i32 0, i32 0
%3 = bitcast [2 x i8]* %coerce.dive4 to i16*
%4 = load i16* %3, align 1
%coerce.dive5 = getelementptr %struct.struct_small_nonchar* %d2, i32 0, i32 0
%5 = bitcast [2 x i16]* %coerce.dive5 to i32*
%6 = load i32* %5, align 1
call void @takes_all(i64 %2, i16 %4, %struct.struct_large_nonchar* byval align 8 %d1, i32 %6, i8* null, i8* null, i32* null, i16* null, i32* null, i32 0, i32 0, i32 0)
ret void
}
declare i32 @get_scalar1()
declare void @end_scalar1()
declare i32 @get_scalar2()
declare void @end_scalar2()
declare i32 @get_scalar3()
declare void @end_scalar3()
declare i32 @get_addrof()
declare void @end_addrof()
declare signext i16 @get_small_nonchar()
declare void @end_small_nonchar()
declare i32 @get_large_nonchar()
declare void @end_large_nonchar()
declare signext i8 @get_small_char()
declare void @end_small_char()
declare signext i8 @get_large_char()
declare void @end_large_char()
declare signext i8 @get_struct_large_char()
declare void @end_struct_large_char()
declare signext i8 @get_struct_large_char2()
declare void @end_struct_large_char2()
declare signext i8 @get_struct_small_char()
declare void @end_struct_small_char()
declare i32 @get_struct_large_nonchar()
declare void @end_struct_large_nonchar()
declare signext i16 @get_struct_small_nonchar()
declare void @end_struct_small_nonchar()
declare void @takes_all(i64, i16, %struct.struct_large_nonchar* byval align 8, i32, i8*, i8*, i32*, i16*, i32*, i32, i32, i32)
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