xref: /llvm-project/llvm/test/tools/gold/X86/merge-functions.ll (revision d047dbd95ed3ef4ace54eaa7c32fe3954317f926)
1*d047dbd9Seleviant; RUN: llvm-as %s -o %t.bc
2*d047dbd9Seleviant; RUN: llvm-as %p/Inputs/merge-functions-foo.ll -o %t-foo.bc
3*d047dbd9Seleviant; RUN: %gold -plugin %llvmshlibdir/LLVMgold%shlibext \
4*d047dbd9Seleviant; RUN:    -m elf_x86_64 \
5*d047dbd9Seleviant; RUN:    -plugin-opt=merge-functions \
6*d047dbd9Seleviant; RUN:    -plugin-opt=save-temps \
7*d047dbd9Seleviant; RUN:    -u main \
8*d047dbd9Seleviant; RUN:    %t.bc %t-foo.bc \
9*d047dbd9Seleviant; RUN:    -o %t-out
10*d047dbd9Seleviant; RUN: llvm-dis %t-out.0.5.precodegen.bc -o - | FileCheck %s
11*d047dbd9Seleviant
12*d047dbd9Seleviant; Check that we've merged foo and bar
13*d047dbd9Seleviant; CHECK:      define dso_local noundef i32 @main()
14*d047dbd9Seleviant; CHECK-NEXT:   tail call fastcc void @bar()
15*d047dbd9Seleviant; CHECK-NEXT:   tail call fastcc void @bar()
16*d047dbd9Seleviant
17*d047dbd9Selevianttarget datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
18*d047dbd9Selevianttarget triple = "x86_64-pc-linux-gnu"
19*d047dbd9Seleviant
20*d047dbd9Seleviant@_g = external local_unnamed_addr global i32, align 4
21*d047dbd9Seleviant
22*d047dbd9Seleviantdefine dso_local i32 @bar(i32 noundef %0) #0 {
23*d047dbd9Seleviant  %2 = add nsw i32 %0, 42
24*d047dbd9Seleviant  store i32 %2, ptr @_g, align 4
25*d047dbd9Seleviant  ret i32 %2
26*d047dbd9Seleviant}
27*d047dbd9Seleviant
28*d047dbd9Seleviantdefine dso_local noundef i32 @main() {
29*d047dbd9Seleviant  %1 = tail call i32 @foo(i32 noundef 1)
30*d047dbd9Seleviant  %2 = tail call i32 @bar(i32 noundef 1)
31*d047dbd9Seleviant  ret i32 0
32*d047dbd9Seleviant}
33*d047dbd9Seleviant
34*d047dbd9Seleviantdeclare i32 @foo(i32 noundef) local_unnamed_addr #2
35*d047dbd9Seleviant
36*d047dbd9Seleviantattributes #0 = { noinline }
37*d047dbd9Seleviant
38*d047dbd9Seleviant!llvm.module.flags = !{!0, !1}
39*d047dbd9Seleviant
40*d047dbd9Seleviant!0 = !{i32 1, !"ThinLTO", i32 0}
41*d047dbd9Seleviant!1 = !{i32 1, !"EnableSplitLTOUnit", i32 1}
42*d047dbd9Seleviant
43*d047dbd9Seleviant^0 = module: (path: "merge-functions.o", hash: (0, 0, 0, 0, 0))
44*d047dbd9Seleviant^1 = gv: (name: "foo") ; guid = 6699318081062747564
45*d047dbd9Seleviant^2 = gv: (name: "_g") ; guid = 9713702464056781075
46*d047dbd9Seleviant^3 = gv: (name: "main", summaries: (function: (module: ^0, flags: (linkage: external, visibility: default, notEligibleToImport: 1, live: 0, dsoLocal: 1, canAutoHide: 0), insts: 3, funcFlags: (readNone: 0, readOnly: 0, noRecurse: 0, returnDoesNotAlias: 0, noInline: 0, alwaysInline: 0, noUnwind: 1, mayThrow: 0, hasUnknownCall: 0, mustBeUnreachable: 0), calls: ((callee: ^1, tail: 1), (callee: ^4, tail: 1))))) ; guid = 15822663052811949562
47*d047dbd9Seleviant^4 = gv: (name: "bar", summaries: (function: (module: ^0, flags: (linkage: external, visibility: default, notEligibleToImport: 1, live: 0, dsoLocal: 1, canAutoHide: 0), insts: 3, funcFlags: (readNone: 0, readOnly: 0, noRecurse: 1, returnDoesNotAlias: 0, noInline: 1, alwaysInline: 0, noUnwind: 1, mayThrow: 0, hasUnknownCall: 0, mustBeUnreachable: 0), refs: (^2)))) ; guid = 16434608426314478903
48*d047dbd9Seleviant^5 = flags: 8
49*d047dbd9Seleviant^6 = blockcount: 0
50