92 lines
3.3 KiB
LLVM
92 lines
3.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; Run with --no_x86_scrub_rip because we care a lot about how globals are
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; accessed in the code model.
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; Memset is interesting because it is an ExternalSymbol reference instead of a
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; GlobalValue. Make sure we do the right GOT load for 64-bit large.
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; RUN: llc < %s -relocation-model=pic -code-model=small | FileCheck %s --check-prefix=CHECK --check-prefix=SMALL-PIC
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; RUN: llc < %s -relocation-model=pic -code-model=medium | FileCheck %s --check-prefix=CHECK --check-prefix=MEDIUM-PIC
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; RUN: llc < %s -relocation-model=pic -code-model=large | FileCheck %s --check-prefix=CHECK --check-prefix=LARGE-PIC
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; Generated from this C source:
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;
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; int main() {
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; unsigned int a[100] = {0};
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; return 0;
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; }
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; ModuleID = 'model.c'
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source_filename = "model.c"
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64--linux"
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declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1) #1
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define i32 @main() #0 {
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; SMALL-PIC-LABEL: main:
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; SMALL-PIC: # %bb.0: # %entry
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; SMALL-PIC-NEXT: subq $424, %rsp # imm = 0x1A8
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; SMALL-PIC-NEXT: .cfi_def_cfa_offset 432
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; SMALL-PIC-NEXT: movl $0, {{[0-9]+}}(%rsp)
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; SMALL-PIC-NEXT: leaq {{[0-9]+}}(%rsp), %rdi
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; SMALL-PIC-NEXT: movl $400, %edx # imm = 0x190
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; SMALL-PIC-NEXT: xorl %esi, %esi
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; SMALL-PIC-NEXT: callq memset@PLT
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; SMALL-PIC-NEXT: xorl %eax, %eax
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; SMALL-PIC-NEXT: addq $424, %rsp # imm = 0x1A8
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; SMALL-PIC-NEXT: .cfi_def_cfa_offset 8
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; SMALL-PIC-NEXT: retq
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;
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; MEDIUM-PIC-LABEL: main:
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; MEDIUM-PIC: # %bb.0: # %entry
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; MEDIUM-PIC-NEXT: subq $424, %rsp # imm = 0x1A8
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; MEDIUM-PIC-NEXT: .cfi_def_cfa_offset 432
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; MEDIUM-PIC-NEXT: movl $0, {{[0-9]+}}(%rsp)
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; MEDIUM-PIC-NEXT: leaq {{[0-9]+}}(%rsp), %rdi
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; MEDIUM-PIC-NEXT: movl $400, %edx # imm = 0x190
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; MEDIUM-PIC-NEXT: xorl %esi, %esi
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; MEDIUM-PIC-NEXT: callq memset@PLT
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; MEDIUM-PIC-NEXT: xorl %eax, %eax
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; MEDIUM-PIC-NEXT: addq $424, %rsp # imm = 0x1A8
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; MEDIUM-PIC-NEXT: .cfi_def_cfa_offset 8
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; MEDIUM-PIC-NEXT: retq
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;
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; LARGE-PIC-LABEL: main:
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; LARGE-PIC: # %bb.0: # %entry
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; LARGE-PIC-NEXT: subq $424, %rsp # imm = 0x1A8
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; LARGE-PIC-NEXT: .cfi_def_cfa_offset 432
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; LARGE-PIC-NEXT: .L0$pb:
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; LARGE-PIC-NEXT: leaq .L0${{.*}}(%rip), %rax
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; LARGE-PIC-NEXT: movabsq $_GLOBAL_OFFSET_TABLE_-.L0$pb, %rcx
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; LARGE-PIC-NEXT: addq %rax, %rcx
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; LARGE-PIC-NEXT: movl $0, {{[0-9]+}}(%rsp)
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; LARGE-PIC-NEXT: leaq {{[0-9]+}}(%rsp), %rdi
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; LARGE-PIC-NEXT: movabsq $memset@GOT, %rax
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; LARGE-PIC-NEXT: movl $400, %edx # imm = 0x190
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; LARGE-PIC-NEXT: xorl %esi, %esi
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; LARGE-PIC-NEXT: callq *(%rcx,%rax)
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; LARGE-PIC-NEXT: xorl %eax, %eax
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; LARGE-PIC-NEXT: addq $424, %rsp # imm = 0x1A8
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; LARGE-PIC-NEXT: .cfi_def_cfa_offset 8
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; LARGE-PIC-NEXT: retq
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entry:
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%retval = alloca i32, align 4
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%a = alloca [100 x i32], align 16
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store i32 0, i32* %retval, align 4
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%0 = bitcast [100 x i32]* %a to i8*
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call void @llvm.memset.p0i8.i64(i8* align 16 %0, i8 0, i64 400, i1 false)
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ret i32 0
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}
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attributes #0 = { noinline nounwind uwtable }
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attributes #0 = { argmemonly nounwind uwtable }
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!llvm.module.flags = !{!0, !1, !2}
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!llvm.ident = !{!3}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{i32 7, !"PIC Level", i32 2}
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!2 = !{i32 7, !"PIE Level", i32 2}
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!3 = !{!"clang version 7.0.0 "}
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