a084c0388e
clang/lib/CodeGen/CodeGenModule sets dso_local on applicable function declarations, we don't need to duplicate the work in TargetMachine:shouldAssumeDSOLocal. (Actually the long-term goal (started by r324535) is to drop TargetMachine::shouldAssumeDSOLocal.) By not implying dso_local, we will respect dso_local/dso_preemptable specifiers set by the frontend. This allows the proposed -fno-direct-access-external-data option to work with -fno-pic and prevent a canonical PLT entry (SHN_UNDEF with non-zero st_value) when taking the address of a function symbol. This patch should be NFC in terms of the Clang emitted assembly because the case we don't set dso_local is a case Clang sets dso_local. However, some tests don't set dso_local on some function declarations and expose some differences. Most tests have been fixed to be more robust in the previous commit.
418 lines
13 KiB
LLVM
418 lines
13 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -verify-machineinstrs -o - -mtriple=aarch64-none-linux-gnu -code-model=tiny < %s | FileCheck %s
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; RUN: llc -verify-machineinstrs -o - -mtriple=aarch64-none-linux-gnu -code-model=tiny -fast-isel < %s | FileCheck %s
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; RUN: llc -verify-machineinstrs -o - -mtriple=aarch64-none-linux-gnu -code-model=tiny -global-isel < %s | FileCheck %s --check-prefix=CHECK-GLOBISEL
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; RUN: llc -verify-machineinstrs -o - -mtriple=aarch64-none-linux-gnu -code-model=tiny -relocation-model=pic < %s | FileCheck %s --check-prefix=CHECK-PIC
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; RUN: llc -verify-machineinstrs -o - -mtriple=aarch64-none-linux-gnu -code-model=tiny -relocation-model=pic -fast-isel < %s | FileCheck %s --check-prefix=CHECK-PIC
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; RUN: llc -verify-machineinstrs -o - -mtriple=aarch64-none-linux-gnu -code-model=tiny -relocation-model=pic -global-isel < %s | FileCheck %s --check-prefix=CHECK-PIC-GLOBISEL
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; Note fast-isel tests here will fall back to isel
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@src = external local_unnamed_addr global [65536 x i8], align 1
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@dst = external global [65536 x i8], align 1
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@ptr = external local_unnamed_addr global i8*, align 8
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define void @foo1() {
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; CHECK-LABEL: foo1:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: ldr x8, :got:src
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; CHECK-NEXT: ldrb w8, [x8]
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; CHECK-NEXT: ldr x9, :got:dst
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; CHECK-NEXT: strb w8, [x9]
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; CHECK-NEXT: ret
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;
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; CHECK-GLOBISEL-LABEL: foo1:
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; CHECK-GLOBISEL: // %bb.0: // %entry
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; CHECK-GLOBISEL-NEXT: ldr x8, :got:src
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; CHECK-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-GLOBISEL-NEXT: ldr x9, :got:dst
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; CHECK-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-GLOBISEL-NEXT: ret
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;
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; CHECK-PIC-LABEL: foo1:
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; CHECK-PIC: // %bb.0: // %entry
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; CHECK-PIC-NEXT: ldr x8, :got:src
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; CHECK-PIC-NEXT: ldrb w8, [x8]
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; CHECK-PIC-NEXT: ldr x9, :got:dst
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; CHECK-PIC-NEXT: strb w8, [x9]
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; CHECK-PIC-NEXT: ret
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;
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; CHECK-PIC-GLOBISEL-LABEL: foo1:
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; CHECK-PIC-GLOBISEL: // %bb.0: // %entry
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; CHECK-PIC-GLOBISEL-NEXT: ldr x8, :got:src
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; CHECK-PIC-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-PIC-GLOBISEL-NEXT: ldr x9, :got:dst
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; CHECK-PIC-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-PIC-GLOBISEL-NEXT: ret
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entry:
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%0 = load i8, i8* getelementptr inbounds ([65536 x i8], [65536 x i8]* @src, i64 0, i64 0), align 1
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store i8 %0, i8* getelementptr inbounds ([65536 x i8], [65536 x i8]* @dst, i64 0, i64 0), align 1
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ret void
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}
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define void @foo2() {
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; CHECK-LABEL: foo2:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: ldr x8, :got:ptr
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; CHECK-NEXT: ldr x9, :got:dst
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; CHECK-NEXT: str x9, [x8]
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; CHECK-NEXT: ret
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;
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; CHECK-GLOBISEL-LABEL: foo2:
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; CHECK-GLOBISEL: // %bb.0: // %entry
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; CHECK-GLOBISEL-NEXT: ldr x8, :got:ptr
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; CHECK-GLOBISEL-NEXT: ldr x9, :got:dst
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; CHECK-GLOBISEL-NEXT: str x9, [x8]
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; CHECK-GLOBISEL-NEXT: ret
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;
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; CHECK-PIC-LABEL: foo2:
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; CHECK-PIC: // %bb.0: // %entry
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; CHECK-PIC-NEXT: ldr x8, :got:ptr
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; CHECK-PIC-NEXT: ldr x9, :got:dst
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; CHECK-PIC-NEXT: str x9, [x8]
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; CHECK-PIC-NEXT: ret
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;
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; CHECK-PIC-GLOBISEL-LABEL: foo2:
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; CHECK-PIC-GLOBISEL: // %bb.0: // %entry
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; CHECK-PIC-GLOBISEL-NEXT: ldr x8, :got:ptr
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; CHECK-PIC-GLOBISEL-NEXT: ldr x9, :got:dst
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; CHECK-PIC-GLOBISEL-NEXT: str x9, [x8]
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; CHECK-PIC-GLOBISEL-NEXT: ret
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entry:
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store i8* getelementptr inbounds ([65536 x i8], [65536 x i8]* @dst, i64 0, i64 0), i8** @ptr, align 8
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ret void
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}
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define void @foo3() {
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; FIXME: Needn't adr ptr
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;
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; CHECK-LABEL: foo3:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: ldr x8, :got:src
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; CHECK-NEXT: ldr x9, :got:ptr
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; CHECK-NEXT: ldrb w8, [x8]
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; CHECK-NEXT: ldr x9, [x9]
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; CHECK-NEXT: strb w8, [x9]
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; CHECK-NEXT: ret
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;
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; CHECK-GLOBISEL-LABEL: foo3:
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; CHECK-GLOBISEL: // %bb.0: // %entry
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; CHECK-GLOBISEL-NEXT: ldr x8, :got:src
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; CHECK-GLOBISEL-NEXT: ldr x9, :got:ptr
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; CHECK-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-GLOBISEL-NEXT: ldr x9, [x9]
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; CHECK-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-GLOBISEL-NEXT: ret
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;
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; CHECK-PIC-LABEL: foo3:
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; CHECK-PIC: // %bb.0: // %entry
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; CHECK-PIC-NEXT: ldr x8, :got:src
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; CHECK-PIC-NEXT: ldr x9, :got:ptr
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; CHECK-PIC-NEXT: ldrb w8, [x8]
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; CHECK-PIC-NEXT: ldr x9, [x9]
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; CHECK-PIC-NEXT: strb w8, [x9]
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; CHECK-PIC-NEXT: ret
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;
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; CHECK-PIC-GLOBISEL-LABEL: foo3:
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; CHECK-PIC-GLOBISEL: // %bb.0: // %entry
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; CHECK-PIC-GLOBISEL-NEXT: ldr x8, :got:src
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; CHECK-PIC-GLOBISEL-NEXT: ldr x9, :got:ptr
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; CHECK-PIC-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-PIC-GLOBISEL-NEXT: ldr x9, [x9]
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; CHECK-PIC-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-PIC-GLOBISEL-NEXT: ret
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entry:
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%0 = load i8, i8* getelementptr inbounds ([65536 x i8], [65536 x i8]* @src, i64 0, i64 0), align 1
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%1 = load i8*, i8** @ptr, align 8
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store i8 %0, i8* %1, align 1
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ret void
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}
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@lsrc = internal global i8 0, align 4
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@ldst = internal global i8 0, align 4
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@lptr = internal global i8* null, align 8
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define void @bar1() {
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; CHECK-LABEL: bar1:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: adr x8, lsrc
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; CHECK-NEXT: ldrb w8, [x8]
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; CHECK-NEXT: adr x9, ldst
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; CHECK-NEXT: strb w8, [x9]
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; CHECK-NEXT: ret
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;
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; CHECK-GLOBISEL-LABEL: bar1:
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; CHECK-GLOBISEL: // %bb.0: // %entry
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; CHECK-GLOBISEL-NEXT: adr x8, lsrc
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; CHECK-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-GLOBISEL-NEXT: adr x9, ldst
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; CHECK-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-GLOBISEL-NEXT: ret
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;
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; CHECK-PIC-LABEL: bar1:
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; CHECK-PIC: // %bb.0: // %entry
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; CHECK-PIC-NEXT: adr x8, lsrc
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; CHECK-PIC-NEXT: ldrb w8, [x8]
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; CHECK-PIC-NEXT: adr x9, ldst
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; CHECK-PIC-NEXT: strb w8, [x9]
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; CHECK-PIC-NEXT: ret
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;
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; CHECK-PIC-GLOBISEL-LABEL: bar1:
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; CHECK-PIC-GLOBISEL: // %bb.0: // %entry
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; CHECK-PIC-GLOBISEL-NEXT: adr x8, lsrc
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; CHECK-PIC-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-PIC-GLOBISEL-NEXT: adr x9, ldst
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; CHECK-PIC-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-PIC-GLOBISEL-NEXT: ret
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entry:
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%0 = load i8, i8* @lsrc, align 4
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store i8 %0, i8* @ldst, align 4
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ret void
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}
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define void @bar2() {
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; CHECK-LABEL: bar2:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: adr x8, lptr
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; CHECK-NEXT: adr x9, ldst
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; CHECK-NEXT: str x9, [x8]
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; CHECK-NEXT: ret
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;
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; CHECK-GLOBISEL-LABEL: bar2:
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; CHECK-GLOBISEL: // %bb.0: // %entry
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; CHECK-GLOBISEL-NEXT: adr x8, lptr
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; CHECK-GLOBISEL-NEXT: adr x9, ldst
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; CHECK-GLOBISEL-NEXT: str x9, [x8]
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; CHECK-GLOBISEL-NEXT: ret
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;
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; CHECK-PIC-LABEL: bar2:
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; CHECK-PIC: // %bb.0: // %entry
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; CHECK-PIC-NEXT: adr x8, lptr
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; CHECK-PIC-NEXT: adr x9, ldst
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; CHECK-PIC-NEXT: str x9, [x8]
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; CHECK-PIC-NEXT: ret
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;
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; CHECK-PIC-GLOBISEL-LABEL: bar2:
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; CHECK-PIC-GLOBISEL: // %bb.0: // %entry
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; CHECK-PIC-GLOBISEL-NEXT: adr x8, lptr
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; CHECK-PIC-GLOBISEL-NEXT: adr x9, ldst
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; CHECK-PIC-GLOBISEL-NEXT: str x9, [x8]
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; CHECK-PIC-GLOBISEL-NEXT: ret
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entry:
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store i8* @ldst, i8** @lptr, align 8
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ret void
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}
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define void @bar3() {
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; FIXME: Needn't adr lptr
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;
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; CHECK-LABEL: bar3:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: adr x8, lsrc
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; CHECK-NEXT: ldrb w8, [x8]
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; CHECK-NEXT: ldr x9, lptr
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; CHECK-NEXT: strb w8, [x9]
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; CHECK-NEXT: ret
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;
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; CHECK-GLOBISEL-LABEL: bar3:
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; CHECK-GLOBISEL: // %bb.0: // %entry
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; CHECK-GLOBISEL-NEXT: adr x8, lsrc
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; CHECK-GLOBISEL-NEXT: adr x9, lptr
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; CHECK-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-GLOBISEL-NEXT: ldr x9, [x9]
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; CHECK-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-GLOBISEL-NEXT: ret
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;
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; CHECK-PIC-LABEL: bar3:
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; CHECK-PIC: // %bb.0: // %entry
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; CHECK-PIC-NEXT: adr x8, lsrc
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; CHECK-PIC-NEXT: ldrb w8, [x8]
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; CHECK-PIC-NEXT: ldr x9, lptr
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; CHECK-PIC-NEXT: strb w8, [x9]
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; CHECK-PIC-NEXT: ret
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;
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; CHECK-PIC-GLOBISEL-LABEL: bar3:
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; CHECK-PIC-GLOBISEL: // %bb.0: // %entry
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; CHECK-PIC-GLOBISEL-NEXT: adr x8, lsrc
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; CHECK-PIC-GLOBISEL-NEXT: adr x9, lptr
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; CHECK-PIC-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-PIC-GLOBISEL-NEXT: ldr x9, [x9]
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; CHECK-PIC-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-PIC-GLOBISEL-NEXT: ret
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entry:
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%0 = load i8, i8* @lsrc, align 4
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%1 = load i8*, i8** @lptr, align 8
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store i8 %0, i8* %1, align 1
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ret void
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}
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@lbsrc = internal global [65536 x i8] zeroinitializer, align 4
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@lbdst = internal global [65536 x i8] zeroinitializer, align 4
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define void @baz1() {
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; CHECK-LABEL: baz1:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: adr x8, lbsrc
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; CHECK-NEXT: ldrb w8, [x8]
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; CHECK-NEXT: adr x9, lbdst
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; CHECK-NEXT: strb w8, [x9]
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; CHECK-NEXT: ret
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;
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; CHECK-GLOBISEL-LABEL: baz1:
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; CHECK-GLOBISEL: // %bb.0: // %entry
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; CHECK-GLOBISEL-NEXT: adr x8, lbsrc
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; CHECK-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-GLOBISEL-NEXT: adr x9, lbdst
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; CHECK-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-GLOBISEL-NEXT: ret
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;
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; CHECK-PIC-LABEL: baz1:
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; CHECK-PIC: // %bb.0: // %entry
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; CHECK-PIC-NEXT: adr x8, lbsrc
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; CHECK-PIC-NEXT: ldrb w8, [x8]
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; CHECK-PIC-NEXT: adr x9, lbdst
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; CHECK-PIC-NEXT: strb w8, [x9]
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; CHECK-PIC-NEXT: ret
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;
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; CHECK-PIC-GLOBISEL-LABEL: baz1:
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; CHECK-PIC-GLOBISEL: // %bb.0: // %entry
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; CHECK-PIC-GLOBISEL-NEXT: adr x8, lbsrc
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; CHECK-PIC-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-PIC-GLOBISEL-NEXT: adr x9, lbdst
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; CHECK-PIC-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-PIC-GLOBISEL-NEXT: ret
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entry:
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%0 = load i8, i8* getelementptr inbounds ([65536 x i8], [65536 x i8]* @lbsrc, i64 0, i64 0), align 4
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store i8 %0, i8* getelementptr inbounds ([65536 x i8], [65536 x i8]* @lbdst, i64 0, i64 0), align 4
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ret void
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}
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define void @baz2() {
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; CHECK-LABEL: baz2:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: adr x8, lptr
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; CHECK-NEXT: adr x9, lbdst
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; CHECK-NEXT: str x9, [x8]
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; CHECK-NEXT: ret
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;
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; CHECK-GLOBISEL-LABEL: baz2:
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; CHECK-GLOBISEL: // %bb.0: // %entry
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; CHECK-GLOBISEL-NEXT: adr x8, lptr
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; CHECK-GLOBISEL-NEXT: adr x9, lbdst
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; CHECK-GLOBISEL-NEXT: str x9, [x8]
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; CHECK-GLOBISEL-NEXT: ret
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;
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; CHECK-PIC-LABEL: baz2:
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; CHECK-PIC: // %bb.0: // %entry
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; CHECK-PIC-NEXT: adr x8, lptr
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; CHECK-PIC-NEXT: adr x9, lbdst
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; CHECK-PIC-NEXT: str x9, [x8]
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; CHECK-PIC-NEXT: ret
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;
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; CHECK-PIC-GLOBISEL-LABEL: baz2:
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; CHECK-PIC-GLOBISEL: // %bb.0: // %entry
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; CHECK-PIC-GLOBISEL-NEXT: adr x8, lptr
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; CHECK-PIC-GLOBISEL-NEXT: adr x9, lbdst
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; CHECK-PIC-GLOBISEL-NEXT: str x9, [x8]
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; CHECK-PIC-GLOBISEL-NEXT: ret
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entry:
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store i8* getelementptr inbounds ([65536 x i8], [65536 x i8]* @lbdst, i64 0, i64 0), i8** @lptr, align 8
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ret void
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}
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define void @baz3() {
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; FIXME: Needn't adr lptr
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;
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; CHECK-LABEL: baz3:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: adr x8, lbsrc
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; CHECK-NEXT: ldrb w8, [x8]
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; CHECK-NEXT: ldr x9, lptr
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; CHECK-NEXT: strb w8, [x9]
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; CHECK-NEXT: ret
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;
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; CHECK-GLOBISEL-LABEL: baz3:
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; CHECK-GLOBISEL: // %bb.0: // %entry
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; CHECK-GLOBISEL-NEXT: adr x8, lbsrc
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; CHECK-GLOBISEL-NEXT: adr x9, lptr
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; CHECK-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-GLOBISEL-NEXT: ldr x9, [x9]
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; CHECK-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-GLOBISEL-NEXT: ret
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;
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; CHECK-PIC-LABEL: baz3:
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; CHECK-PIC: // %bb.0: // %entry
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; CHECK-PIC-NEXT: adr x8, lbsrc
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; CHECK-PIC-NEXT: ldrb w8, [x8]
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; CHECK-PIC-NEXT: ldr x9, lptr
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; CHECK-PIC-NEXT: strb w8, [x9]
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; CHECK-PIC-NEXT: ret
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;
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; CHECK-PIC-GLOBISEL-LABEL: baz3:
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; CHECK-PIC-GLOBISEL: // %bb.0: // %entry
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; CHECK-PIC-GLOBISEL-NEXT: adr x8, lbsrc
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; CHECK-PIC-GLOBISEL-NEXT: adr x9, lptr
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; CHECK-PIC-GLOBISEL-NEXT: ldrb w8, [x8]
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; CHECK-PIC-GLOBISEL-NEXT: ldr x9, [x9]
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; CHECK-PIC-GLOBISEL-NEXT: strb w8, [x9]
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; CHECK-PIC-GLOBISEL-NEXT: ret
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entry:
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%0 = load i8, i8* getelementptr inbounds ([65536 x i8], [65536 x i8]* @lbsrc, i64 0, i64 0), align 4
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%1 = load i8*, i8** @lptr, align 8
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store i8 %0, i8* %1, align 1
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ret void
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}
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declare void @func(...)
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define i8* @externfuncaddr() {
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; CHECK-LABEL: externfuncaddr:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: ldr x0, :got:func
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; CHECK-NEXT: ret
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;
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; CHECK-GLOBISEL-LABEL: externfuncaddr:
|
|
; CHECK-GLOBISEL: // %bb.0: // %entry
|
|
; CHECK-GLOBISEL-NEXT: ldr x0, :got:func
|
|
; CHECK-GLOBISEL-NEXT: ret
|
|
;
|
|
; CHECK-PIC-LABEL: externfuncaddr:
|
|
; CHECK-PIC: // %bb.0: // %entry
|
|
; CHECK-PIC-NEXT: ldr x0, :got:func
|
|
; CHECK-PIC-NEXT: ret
|
|
;
|
|
; CHECK-PIC-GLOBISEL-LABEL: externfuncaddr:
|
|
; CHECK-PIC-GLOBISEL: // %bb.0: // %entry
|
|
; CHECK-PIC-GLOBISEL-NEXT: ldr x0, :got:func
|
|
; CHECK-PIC-GLOBISEL-NEXT: ret
|
|
entry:
|
|
ret i8* bitcast (void (...)* @func to i8*)
|
|
}
|
|
|
|
define i8* @localfuncaddr() {
|
|
; CHECK-LABEL: localfuncaddr:
|
|
; CHECK: // %bb.0: // %entry
|
|
; CHECK-NEXT: adr x0, externfuncaddr
|
|
; CHECK-NEXT: ret
|
|
;
|
|
; CHECK-GLOBISEL-LABEL: localfuncaddr:
|
|
; CHECK-GLOBISEL: // %bb.0: // %entry
|
|
; CHECK-GLOBISEL-NEXT: adr x0, externfuncaddr
|
|
; CHECK-GLOBISEL-NEXT: ret
|
|
;
|
|
; CHECK-PIC-LABEL: localfuncaddr:
|
|
; CHECK-PIC: // %bb.0: // %entry
|
|
; CHECK-PIC-NEXT: ldr x0, :got:externfuncaddr
|
|
; CHECK-PIC-NEXT: ret
|
|
;
|
|
; CHECK-PIC-GLOBISEL-LABEL: localfuncaddr:
|
|
; CHECK-PIC-GLOBISEL: // %bb.0: // %entry
|
|
; CHECK-PIC-GLOBISEL-NEXT: ldr x0, :got:externfuncaddr
|
|
; CHECK-PIC-GLOBISEL-NEXT: ret
|
|
entry:
|
|
ret i8* bitcast (i8* ()* @externfuncaddr to i8*)
|
|
}
|
|
|