derek.holloway
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74 lines
2.7 KiB
LLVM
74 lines
2.7 KiB
LLVM
; REQUIRES: x86
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;; This test verifies that --wrap works correctly for inter-module references to
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;; the wrapped symbol, when LTO or ThinLTO is involved. It checks for various
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;; combinations of bitcode and regular objects.
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;; LTO + LTO
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; RUN: llvm-as %s -o %t1.bc
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; RUN: llvm-as %S/Inputs/wrap-bar.ll -o %t2.bc
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; RUN: ld.lld %t1.bc %t2.bc -shared -o %t.bc-bc.so -wrap=bar
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; RUN: llvm-objdump -d %t.bc-bc.so | FileCheck %s --check-prefixes=CHECK,JMP
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; RUN: llvm-readobj --symbols %t.bc-bc.so | FileCheck --check-prefix=BIND %s
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;; LTO + Object
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; RUN: llc %S/Inputs/wrap-bar.ll -o %t2.o --filetype=obj
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; RUN: ld.lld %t1.bc %t2.o -shared -o %t.bc-o.so -wrap=bar
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; RUN: llvm-objdump -d %t.bc-o.so | FileCheck %s --check-prefixes=CHECK,JMP
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; RUN: llvm-readobj --symbols %t.bc-o.so | FileCheck --check-prefix=BIND %s
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;; Object + LTO
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; RUN: llc %s -o %t1.o --filetype=obj
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; RUN: ld.lld %t1.o %t2.bc -shared -o %t.o-bc.so -wrap=bar
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; RUN: llvm-objdump -d %t.o-bc.so | FileCheck %s --check-prefixes=CHECK,CALL
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; RUN: llvm-readobj --symbols %t.o-bc.so | FileCheck --check-prefix=BIND %s
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;; ThinLTO + ThinLTO
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; RUN: opt -module-summary %s -o %t1.thin
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; RUN: opt -module-summary %S/Inputs/wrap-bar.ll -o %t2.thin
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; RUN: ld.lld %t1.thin %t2.thin -shared -o %t.thin-thin.so -wrap=bar
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; RUN: llvm-objdump -d %t.thin-thin.so | FileCheck %s --check-prefixes=CHECK,JMP
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; RUN: llvm-readobj --symbols %t.thin-thin.so | FileCheck --check-prefix=BIND %s
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;; ThinLTO + Object
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; RUN: ld.lld %t1.thin %t2.o -shared -o %t.thin-o.so -wrap=bar
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; RUN: llvm-objdump -d %t.thin-o.so | FileCheck %s --check-prefixes=CHECK,JMP
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; RUN: llvm-readobj --symbols %t.thin-o.so | FileCheck --check-prefix=BIND %s
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;; Object + ThinLTO
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; RUN: ld.lld %t1.o %t2.thin -shared -o %t.o-thin.so -wrap=bar
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; RUN: llvm-objdump -d %t.o-thin.so | FileCheck %s --check-prefixes=CHECK,CALL
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; RUN: llvm-readobj --symbols %t.o-thin.so | FileCheck --check-prefix=BIND %s
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;; Make sure that calls in foo() are not eliminated and that bar is
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;; routed to __wrap_bar and __real_bar is routed to bar.
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; CHECK: <foo>:
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: callq{{.*}}<__wrap_bar>
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; JMP-NEXT: popq %rax
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; JMP-NEXT: jmp{{.*}}<bar>
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; CALL-NEXT: callq{{.*}}<bar>
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; CALL-NEXT: popq %rax
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;; Check that bar and __wrap_bar retain their original binding.
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; BIND: Name: bar
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; BIND-NEXT: Value:
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; BIND-NEXT: Size:
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; BIND-NEXT: Binding: Local
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; BIND: Name: __wrap_bar
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; BIND-NEXT: Value:
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; BIND-NEXT: Size:
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; BIND-NEXT: Binding: Local
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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declare void @bar()
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declare void @__real_bar()
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define void @foo() {
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call void @bar()
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call void @__real_bar()
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ret void
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}
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