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llvm-mirror/test/CodeGen/X86/xor.ll
Reid Kleckner bc8c141758 [X86] Fix Windows i1 zeroext conventions to use i8 instead of i32 
Summary:
Re-lands r328386 and r328443, reverting r328482.

Incorporates fixes from @mstorsjo in D44876 (thanks!) so that small
parameters in i8 and i16 do not end up in the SysV register parameters
(EDI, ESI, etc).

I added tests for how we receive small parameters, since that is the
important part. It's always safe to store more bytes than will be read,
but the assumptions you make when loading them are what really matter.

I also tested this by self-hosting clang and it passed tests on win64.

Reviewers: mstorsjo, hans

Subscribers: hiraditya, mstorsjo, llvm-commits

Differential Revision: https://reviews.llvm.org/D44900

llvm-svn: 328570
2018-03-26 18:49:48 +00:00

512 lines
15 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-unknown -mattr=+sse2 | FileCheck %s -check-prefixes=X32
; RUN: llc < %s -mtriple=x86_64-linux -mattr=+sse2 | FileCheck %s -check-prefixes=X64,X64-LIN
; RUN: llc < %s -mtriple=x86_64-win32 -mattr=+sse2 | FileCheck %s -check-prefixes=X64,X64-WIN
; Though it is undefined, we want xor undef,undef to produce zero.
define <4 x i32> @test1() nounwind {
; X32-LABEL: test1:
; X32: # %bb.0:
; X32-NEXT: xorps %xmm0, %xmm0
; X32-NEXT: retl
;
; X64-LABEL: test1:
; X64: # %bb.0:
; X64-NEXT: xorps %xmm0, %xmm0
; X64-NEXT: retq
%tmp = xor <4 x i32> undef, undef
ret <4 x i32> %tmp
}
; Though it is undefined, we want xor undef,undef to produce zero.
define i32 @test2() nounwind{
; X32-LABEL: test2:
; X32: # %bb.0:
; X32-NEXT: xorl %eax, %eax
; X32-NEXT: retl
;
; X64-LABEL: test2:
; X64: # %bb.0:
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: retq
%tmp = xor i32 undef, undef
ret i32 %tmp
}
define i32 @test3(i32 %a, i32 %b) nounwind {
; X32-LABEL: test3:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: notl %eax
; X32-NEXT: andl {{[0-9]+}}(%esp), %eax
; X32-NEXT: shrl %eax
; X32-NEXT: retl
;
; X64-LIN-LABEL: test3:
; X64-LIN: # %bb.0: # %entry
; X64-LIN-NEXT: notl %esi
; X64-LIN-NEXT: andl %edi, %esi
; X64-LIN-NEXT: shrl %esi
; X64-LIN-NEXT: movl %esi, %eax
; X64-LIN-NEXT: retq
;
; X64-WIN-LABEL: test3:
; X64-WIN: # %bb.0: # %entry
; X64-WIN-NEXT: notl %edx
; X64-WIN-NEXT: andl %ecx, %edx
; X64-WIN-NEXT: shrl %edx
; X64-WIN-NEXT: movl %edx, %eax
; X64-WIN-NEXT: retq
entry:
%tmp1not = xor i32 %b, -2
%tmp3 = and i32 %tmp1not, %a
%tmp4 = lshr i32 %tmp3, 1
ret i32 %tmp4
}
define i32 @test4(i32 %a, i32 %b) nounwind {
; X32-LABEL: test4:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: .p2align 4, 0x90
; X32-NEXT: .LBB3_1: # %bb
; X32-NEXT: # =>This Inner Loop Header: Depth=1
; X32-NEXT: xorl %ecx, %eax
; X32-NEXT: movl %eax, %edx
; X32-NEXT: notl %edx
; X32-NEXT: andl %ecx, %edx
; X32-NEXT: addl %edx, %edx
; X32-NEXT: movl %edx, %ecx
; X32-NEXT: jne .LBB3_1
; X32-NEXT: # %bb.2: # %bb12
; X32-NEXT: retl
;
; X64-LIN-LABEL: test4:
; X64-LIN: # %bb.0: # %entry
; X64-LIN-NEXT: .p2align 4, 0x90
; X64-LIN-NEXT: .LBB3_1: # %bb
; X64-LIN-NEXT: # =>This Inner Loop Header: Depth=1
; X64-LIN-NEXT: xorl %esi, %edi
; X64-LIN-NEXT: movl %edi, %eax
; X64-LIN-NEXT: notl %eax
; X64-LIN-NEXT: andl %esi, %eax
; X64-LIN-NEXT: addl %eax, %eax
; X64-LIN-NEXT: movl %eax, %esi
; X64-LIN-NEXT: jne .LBB3_1
; X64-LIN-NEXT: # %bb.2: # %bb12
; X64-LIN-NEXT: movl %edi, %eax
; X64-LIN-NEXT: retq
;
; X64-WIN-LABEL: test4:
; X64-WIN: # %bb.0: # %entry
; X64-WIN-NEXT: .p2align 4, 0x90
; X64-WIN-NEXT: .LBB3_1: # %bb
; X64-WIN-NEXT: # =>This Inner Loop Header: Depth=1
; X64-WIN-NEXT: xorl %edx, %ecx
; X64-WIN-NEXT: movl %ecx, %eax
; X64-WIN-NEXT: notl %eax
; X64-WIN-NEXT: andl %edx, %eax
; X64-WIN-NEXT: addl %eax, %eax
; X64-WIN-NEXT: movl %eax, %edx
; X64-WIN-NEXT: jne .LBB3_1
; X64-WIN-NEXT: # %bb.2: # %bb12
; X64-WIN-NEXT: movl %ecx, %eax
; X64-WIN-NEXT: retq
entry:
br label %bb
bb:
%b_addr.0 = phi i32 [ %b, %entry ], [ %tmp8, %bb ]
%a_addr.0 = phi i32 [ %a, %entry ], [ %tmp3, %bb ]
%tmp3 = xor i32 %a_addr.0, %b_addr.0
%tmp4not = xor i32 %tmp3, 2147483647
%tmp6 = and i32 %tmp4not, %b_addr.0
%tmp8 = shl i32 %tmp6, 1
%tmp10 = icmp eq i32 %tmp8, 0
br i1 %tmp10, label %bb12, label %bb
bb12:
ret i32 %tmp3
}
define i16 @test5(i16 %a, i16 %b) nounwind {
; X32-LABEL: test5:
; X32: # %bb.0: # %entry
; X32-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
; X32-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; X32-NEXT: .p2align 4, 0x90
; X32-NEXT: .LBB4_1: # %bb
; X32-NEXT: # =>This Inner Loop Header: Depth=1
; X32-NEXT: xorl %ecx, %eax
; X32-NEXT: movl %eax, %edx
; X32-NEXT: notl %edx
; X32-NEXT: andl %ecx, %edx
; X32-NEXT: addl %edx, %edx
; X32-NEXT: testw %dx, %dx
; X32-NEXT: movl %edx, %ecx
; X32-NEXT: jne .LBB4_1
; X32-NEXT: # %bb.2: # %bb12
; X32-NEXT: # kill: def $ax killed $ax killed $eax
; X32-NEXT: retl
;
; X64-LIN-LABEL: test5:
; X64-LIN: # %bb.0: # %entry
; X64-LIN-NEXT: .p2align 4, 0x90
; X64-LIN-NEXT: .LBB4_1: # %bb
; X64-LIN-NEXT: # =>This Inner Loop Header: Depth=1
; X64-LIN-NEXT: xorl %esi, %edi
; X64-LIN-NEXT: movl %edi, %eax
; X64-LIN-NEXT: notl %eax
; X64-LIN-NEXT: andl %esi, %eax
; X64-LIN-NEXT: addl %eax, %eax
; X64-LIN-NEXT: testw %ax, %ax
; X64-LIN-NEXT: movl %eax, %esi
; X64-LIN-NEXT: jne .LBB4_1
; X64-LIN-NEXT: # %bb.2: # %bb12
; X64-LIN-NEXT: movl %edi, %eax
; X64-LIN-NEXT: retq
;
; X64-WIN-LABEL: test5:
; X64-WIN: # %bb.0: # %entry
; X64-WIN-NEXT: # kill: def $dx killed $dx def $edx
; X64-WIN-NEXT: # kill: def $cx killed $cx def $ecx
; X64-WIN-NEXT: .p2align 4, 0x90
; X64-WIN-NEXT: .LBB4_1: # %bb
; X64-WIN-NEXT: # =>This Inner Loop Header: Depth=1
; X64-WIN-NEXT: xorl %edx, %ecx
; X64-WIN-NEXT: movl %ecx, %eax
; X64-WIN-NEXT: notl %eax
; X64-WIN-NEXT: andl %edx, %eax
; X64-WIN-NEXT: addl %eax, %eax
; X64-WIN-NEXT: testw %ax, %ax
; X64-WIN-NEXT: movl %eax, %edx
; X64-WIN-NEXT: jne .LBB4_1
; X64-WIN-NEXT: # %bb.2: # %bb12
; X64-WIN-NEXT: movl %ecx, %eax
; X64-WIN-NEXT: retq
entry:
br label %bb
bb:
%b_addr.0 = phi i16 [ %b, %entry ], [ %tmp8, %bb ]
%a_addr.0 = phi i16 [ %a, %entry ], [ %tmp3, %bb ]
%tmp3 = xor i16 %a_addr.0, %b_addr.0
%tmp4not = xor i16 %tmp3, 32767
%tmp6 = and i16 %tmp4not, %b_addr.0
%tmp8 = shl i16 %tmp6, 1
%tmp10 = icmp eq i16 %tmp8, 0
br i1 %tmp10, label %bb12, label %bb
bb12:
ret i16 %tmp3
}
define i8 @test6(i8 %a, i8 %b) nounwind {
; X32-LABEL: test6:
; X32: # %bb.0: # %entry
; X32-NEXT: movb {{[0-9]+}}(%esp), %cl
; X32-NEXT: movb {{[0-9]+}}(%esp), %al
; X32-NEXT: .p2align 4, 0x90
; X32-NEXT: .LBB5_1: # %bb
; X32-NEXT: # =>This Inner Loop Header: Depth=1
; X32-NEXT: xorb %cl, %al
; X32-NEXT: movl %eax, %edx
; X32-NEXT: notb %dl
; X32-NEXT: andb %cl, %dl
; X32-NEXT: addb %dl, %dl
; X32-NEXT: movl %edx, %ecx
; X32-NEXT: jne .LBB5_1
; X32-NEXT: # %bb.2: # %bb12
; X32-NEXT: retl
;
; X64-LIN-LABEL: test6:
; X64-LIN: # %bb.0: # %entry
; X64-LIN-NEXT: .p2align 4, 0x90
; X64-LIN-NEXT: .LBB5_1: # %bb
; X64-LIN-NEXT: # =>This Inner Loop Header: Depth=1
; X64-LIN-NEXT: xorb %sil, %dil
; X64-LIN-NEXT: movl %edi, %eax
; X64-LIN-NEXT: notb %al
; X64-LIN-NEXT: andb %sil, %al
; X64-LIN-NEXT: addb %al, %al
; X64-LIN-NEXT: movl %eax, %esi
; X64-LIN-NEXT: jne .LBB5_1
; X64-LIN-NEXT: # %bb.2: # %bb12
; X64-LIN-NEXT: movl %edi, %eax
; X64-LIN-NEXT: retq
;
; X64-WIN-LABEL: test6:
; X64-WIN: # %bb.0: # %entry
; X64-WIN-NEXT: .p2align 4, 0x90
; X64-WIN-NEXT: .LBB5_1: # %bb
; X64-WIN-NEXT: # =>This Inner Loop Header: Depth=1
; X64-WIN-NEXT: xorb %dl, %cl
; X64-WIN-NEXT: movl %ecx, %eax
; X64-WIN-NEXT: notb %al
; X64-WIN-NEXT: andb %dl, %al
; X64-WIN-NEXT: addb %al, %al
; X64-WIN-NEXT: movl %eax, %edx
; X64-WIN-NEXT: jne .LBB5_1
; X64-WIN-NEXT: # %bb.2: # %bb12
; X64-WIN-NEXT: movl %ecx, %eax
; X64-WIN-NEXT: retq
entry:
br label %bb
bb:
%b_addr.0 = phi i8 [ %b, %entry ], [ %tmp8, %bb ]
%a_addr.0 = phi i8 [ %a, %entry ], [ %tmp3, %bb ]
%tmp3 = xor i8 %a_addr.0, %b_addr.0
%tmp4not = xor i8 %tmp3, 127
%tmp6 = and i8 %tmp4not, %b_addr.0
%tmp8 = shl i8 %tmp6, 1
%tmp10 = icmp eq i8 %tmp8, 0
br i1 %tmp10, label %bb12, label %bb
bb12:
ret i8 %tmp3
}
define i32 @test7(i32 %a, i32 %b) nounwind {
; X32-LABEL: test7:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: .p2align 4, 0x90
; X32-NEXT: .LBB6_1: # %bb
; X32-NEXT: # =>This Inner Loop Header: Depth=1
; X32-NEXT: xorl %ecx, %eax
; X32-NEXT: movl %eax, %edx
; X32-NEXT: xorl $2147483646, %edx # imm = 0x7FFFFFFE
; X32-NEXT: andl %ecx, %edx
; X32-NEXT: addl %edx, %edx
; X32-NEXT: movl %edx, %ecx
; X32-NEXT: jne .LBB6_1
; X32-NEXT: # %bb.2: # %bb12
; X32-NEXT: retl
;
; X64-LIN-LABEL: test7:
; X64-LIN: # %bb.0: # %entry
; X64-LIN-NEXT: .p2align 4, 0x90
; X64-LIN-NEXT: .LBB6_1: # %bb
; X64-LIN-NEXT: # =>This Inner Loop Header: Depth=1
; X64-LIN-NEXT: xorl %esi, %edi
; X64-LIN-NEXT: movl %edi, %eax
; X64-LIN-NEXT: xorl $2147483646, %eax # imm = 0x7FFFFFFE
; X64-LIN-NEXT: andl %esi, %eax
; X64-LIN-NEXT: addl %eax, %eax
; X64-LIN-NEXT: movl %eax, %esi
; X64-LIN-NEXT: jne .LBB6_1
; X64-LIN-NEXT: # %bb.2: # %bb12
; X64-LIN-NEXT: movl %edi, %eax
; X64-LIN-NEXT: retq
;
; X64-WIN-LABEL: test7:
; X64-WIN: # %bb.0: # %entry
; X64-WIN-NEXT: .p2align 4, 0x90
; X64-WIN-NEXT: .LBB6_1: # %bb
; X64-WIN-NEXT: # =>This Inner Loop Header: Depth=1
; X64-WIN-NEXT: xorl %edx, %ecx
; X64-WIN-NEXT: movl %ecx, %eax
; X64-WIN-NEXT: xorl $2147483646, %eax # imm = 0x7FFFFFFE
; X64-WIN-NEXT: andl %edx, %eax
; X64-WIN-NEXT: addl %eax, %eax
; X64-WIN-NEXT: movl %eax, %edx
; X64-WIN-NEXT: jne .LBB6_1
; X64-WIN-NEXT: # %bb.2: # %bb12
; X64-WIN-NEXT: movl %ecx, %eax
; X64-WIN-NEXT: retq
entry:
br label %bb
bb:
%b_addr.0 = phi i32 [ %b, %entry ], [ %tmp8, %bb ]
%a_addr.0 = phi i32 [ %a, %entry ], [ %tmp3, %bb ]
%tmp3 = xor i32 %a_addr.0, %b_addr.0
%tmp4not = xor i32 %tmp3, 2147483646
%tmp6 = and i32 %tmp4not, %b_addr.0
%tmp8 = shl i32 %tmp6, 1
%tmp10 = icmp eq i32 %tmp8, 0
br i1 %tmp10, label %bb12, label %bb
bb12:
ret i32 %tmp3
}
; rdar://7553032
define i32 @test8(i32 %a) nounwind {
; X32-LABEL: test8:
; X32: # %bb.0: # %entry
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: notl %eax
; X32-NEXT: retl
;
; X64-LIN-LABEL: test8:
; X64-LIN: # %bb.0: # %entry
; X64-LIN-NEXT: notl %edi
; X64-LIN-NEXT: movl %edi, %eax
; X64-LIN-NEXT: retq
;
; X64-WIN-LABEL: test8:
; X64-WIN: # %bb.0: # %entry
; X64-WIN-NEXT: notl %ecx
; X64-WIN-NEXT: movl %ecx, %eax
; X64-WIN-NEXT: retq
entry:
%t1 = sub i32 0, %a
%t2 = add i32 %t1, -1
ret i32 %t2
}
define i32 @test9(i32 %a) nounwind {
; X32-LABEL: test9:
; X32: # %bb.0:
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: notl %eax
; X32-NEXT: andl $4096, %eax # imm = 0x1000
; X32-NEXT: retl
;
; X64-LIN-LABEL: test9:
; X64-LIN: # %bb.0:
; X64-LIN-NEXT: notl %edi
; X64-LIN-NEXT: andl $4096, %edi # imm = 0x1000
; X64-LIN-NEXT: movl %edi, %eax
; X64-LIN-NEXT: retq
;
; X64-WIN-LABEL: test9:
; X64-WIN: # %bb.0:
; X64-WIN-NEXT: notl %ecx
; X64-WIN-NEXT: andl $4096, %ecx # imm = 0x1000
; X64-WIN-NEXT: movl %ecx, %eax
; X64-WIN-NEXT: retq
%1 = and i32 %a, 4096
%2 = xor i32 %1, 4096
ret i32 %2
}
; PR15948
define <4 x i32> @test10(<4 x i32> %a) nounwind {
; X32-LABEL: test10:
; X32: # %bb.0:
; X32-NEXT: andnps {{\.LCPI.*}}, %xmm0
; X32-NEXT: retl
;
; X64-LIN-LABEL: test10:
; X64-LIN: # %bb.0:
; X64-LIN-NEXT: andnps {{.*}}(%rip), %xmm0
; X64-LIN-NEXT: retq
;
; X64-WIN-LABEL: test10:
; X64-WIN: # %bb.0:
; X64-WIN-NEXT: movaps (%rcx), %xmm0
; X64-WIN-NEXT: andnps __xmm@{{.*}}(%rip), %xmm0
; X64-WIN-NEXT: retq
%1 = and <4 x i32> %a, <i32 4096, i32 4096, i32 4096, i32 4096>
%2 = xor <4 x i32> %1, <i32 4096, i32 4096, i32 4096, i32 4096>
ret <4 x i32> %2
}
define i32 @PR17487(i1 %tobool) {
; X32-LABEL: PR17487:
; X32: # %bb.0:
; X32-NEXT: movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
; X32-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,1,0,1]
; X32-NEXT: pandn {{\.LCPI.*}}, %xmm0
; X32-NEXT: pshufd {{.*#+}} xmm1 = xmm0[3,1,2,3]
; X32-NEXT: movd %xmm1, %ecx
; X32-NEXT: pshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
; X32-NEXT: movd %xmm0, %edx
; X32-NEXT: xorl $1, %edx
; X32-NEXT: xorl %eax, %eax
; X32-NEXT: orl %ecx, %edx
; X32-NEXT: setne %al
; X32-NEXT: retl
;
; X64-LIN-LABEL: PR17487:
; X64-LIN: # %bb.0:
; X64-LIN-NEXT: movd %edi, %xmm0
; X64-LIN-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,1,0,1]
; X64-LIN-NEXT: pandn {{.*}}(%rip), %xmm0
; X64-LIN-NEXT: pshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
; X64-LIN-NEXT: movq %xmm0, %rcx
; X64-LIN-NEXT: xorl %eax, %eax
; X64-LIN-NEXT: cmpq $1, %rcx
; X64-LIN-NEXT: setne %al
; X64-LIN-NEXT: retq
;
; X64-WIN-LABEL: PR17487:
; X64-WIN: # %bb.0:
; X64-WIN-NEXT: movzbl %cl, %eax
; X64-WIN-NEXT: movd %eax, %xmm0
; X64-WIN-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,1,0,1]
; X64-WIN-NEXT: pandn __xmm@{{.*}}(%rip), %xmm0
; X64-WIN-NEXT: pshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
; X64-WIN-NEXT: movq %xmm0, %rcx
; X64-WIN-NEXT: xorl %eax, %eax
; X64-WIN-NEXT: cmpq $1, %rcx
; X64-WIN-NEXT: setne %al
; X64-WIN-NEXT: retq
%tmp = insertelement <2 x i1> undef, i1 %tobool, i32 1
%tmp1 = zext <2 x i1> %tmp to <2 x i64>
%tmp2 = xor <2 x i64> %tmp1, <i64 1, i64 1>
%tmp3 = extractelement <2 x i64> %tmp2, i32 1
%add = add nsw i64 0, %tmp3
%cmp6 = icmp ne i64 %add, 1
%conv7 = zext i1 %cmp6 to i32
ret i32 %conv7
}
define i32 @test11(i32 %b) {
; X32-LABEL: test11:
; X32: # %bb.0:
; X32-NEXT: movb {{[0-9]+}}(%esp), %cl
; X32-NEXT: movl $-2, %eax
; X32-NEXT: roll %cl, %eax
; X32-NEXT: retl
;
; X64-LIN-LABEL: test11:
; X64-LIN: # %bb.0:
; X64-LIN-NEXT: movl $-2, %eax
; X64-LIN-NEXT: movl %edi, %ecx
; X64-LIN-NEXT: roll %cl, %eax
; X64-LIN-NEXT: retq
;
; X64-WIN-LABEL: test11:
; X64-WIN: # %bb.0:
; X64-WIN-NEXT: movl $-2, %eax
; X64-WIN-NEXT: # kill: def $cl killed $cl killed $ecx
; X64-WIN-NEXT: roll %cl, %eax
; X64-WIN-NEXT: retq
%shl = shl i32 1, %b
%neg = xor i32 %shl, -1
ret i32 %neg
}
%struct.ref_s = type { %union.v, i16, i16 }
%union.v = type { i64 }
define %struct.ref_s* @test12(%struct.ref_s* %op, i64 %osbot, i64 %intval) {
; X32-LABEL: test12:
; X32: # %bb.0:
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: notl %eax
; X32-NEXT: leal (%eax,%eax,2), %eax
; X32-NEXT: shll $2, %eax
; X32-NEXT: addl {{[0-9]+}}(%esp), %eax
; X32-NEXT: retl
;
; X64-LIN-LABEL: test12:
; X64-LIN: # %bb.0:
; X64-LIN-NEXT: xorq $-1, %rdx
; X64-LIN-NEXT: shlq $32, %rdx
; X64-LIN-NEXT: sarq $28, %rdx
; X64-LIN-NEXT: leaq (%rdx,%rdi), %rax
; X64-LIN-NEXT: retq
;
; X64-WIN-LABEL: test12:
; X64-WIN: # %bb.0:
; X64-WIN-NEXT: xorq $-1, %r8
; X64-WIN-NEXT: shlq $32, %r8
; X64-WIN-NEXT: sarq $28, %r8
; X64-WIN-NEXT: leaq (%r8,%rcx), %rax
; X64-WIN-NEXT: retq
%neg = shl i64 %intval, 32
%sext = xor i64 %neg, -4294967296
%idx.ext = ashr exact i64 %sext, 32
%add.ptr = getelementptr inbounds %struct.ref_s, %struct.ref_s* %op, i64 %idx.ext
ret %struct.ref_s* %add.ptr
}
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