Index: llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp =================================================================== --- llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp +++ llvm/trunk/lib/CodeGen/MachineModuleInfo.cpp @@ -121,7 +121,7 @@ BBCallbacks.back().setMap(this); Entry.Index = BBCallbacks.size() - 1; Entry.Fn = BB->getParent(); - Entry.Symbols.push_back(Context.createTempSymbol()); + Entry.Symbols.push_back(Context.createTempSymbol(!BB->hasAddressTaken())); return Entry.Symbols; } Index: llvm/trunk/test/CodeGen/AArch64/callbr-asm-obj-file.ll =================================================================== --- llvm/trunk/test/CodeGen/AArch64/callbr-asm-obj-file.ll +++ llvm/trunk/test/CodeGen/AArch64/callbr-asm-obj-file.ll @@ -0,0 +1,102 @@ +; RUN: llc < %s -mtriple=aarch64-unknown-linux-gnu -filetype=obj -o - \ +; RUN: | llvm-objdump -triple aarch64-unknown-linux-gnu -d - \ +; RUN: | FileCheck %s + +%struct.c = type { i1 (...)* } + +@l = common hidden local_unnamed_addr global i32 0, align 4 + +; CHECK-LABEL: 0000000000000000 test1: +; CHECK-LABEL: 0000000000000018 $d.1: +; CHECK-LABEL: 0000000000000020 $x.2: +; CHECK-NEXT: b #16 <$x.4+0x4> +; CHECK-LABEL: 000000000000002c $x.4: +; CHECK-NEXT: b #4 <$x.4+0x4> +; CHECK-NEXT: mov w0, wzr +; CHECK-NEXT: ldr x30, [sp], #16 +; CHECK-NEXT: ret +define hidden i32 @test1() { + %1 = tail call i32 bitcast (i32 (...)* @g to i32 ()*)() + %2 = icmp eq i32 %1, 0 + br i1 %2, label %3, label %5 + +3: ; preds = %0 + callbr void asm sideeffect "1: nop\0A\09.quad a\0A\09b ${1:l}\0A\09.quad ${0:c}", "i,X"(i32* null, i8* blockaddress(@test1, %7)) + to label %4 [label %7] + +4: ; preds = %3 + br label %7 + +5: ; preds = %0 + %6 = tail call i32 bitcast (i32 (...)* @i to i32 ()*)() + br label %7 + +7: ; preds = %3, %4, %5 + %8 = phi i32 [ %6, %5 ], [ 0, %4 ], [ 0, %3 ] + ret i32 %8 +} + +declare dso_local i32 @g(...) local_unnamed_addr + +declare dso_local i32 @i(...) local_unnamed_addr + +; CHECK-LABEL: 000000000000003c test2: +; CHECK: bl #0 +; CHECK-LABEL: 0000000000000064 $d.5: +; CHECK-LABEL: 000000000000006c $x.6: +; CHECK-NEXT: b #-24 +define hidden i32 @test2() local_unnamed_addr { + %1 = load i32, i32* @l, align 4 + %2 = icmp eq i32 %1, 0 + br i1 %2, label %10, label %3 + +3: ; preds = %0 + %4 = tail call i32 bitcast (i32 (...)* @g to i32 ()*)() + %5 = icmp eq i32 %4, 0 + br i1 %5, label %6, label %7 + +6: ; preds = %3 + callbr void asm sideeffect "1: nop\0A\09.quad b\0A\09b ${1:l}\0A\09.quad ${0:c}", "i,X"(i32* null, i8* blockaddress(@test2, %7)) + to label %10 [label %9] + +7: ; preds = %3 + %8 = tail call i32 bitcast (i32 (...)* @i to i32 ()*)() + br label %10 + +9: ; preds = %6 + br label %10 + +10: ; preds = %7, %0, %6, %9 + ret i32 undef +} + +; CHECK-LABEL: 0000000000000084 test3: +; CHECK-LABEL: 00000000000000a8 $d.9: +; CHECK-LABEL: 00000000000000b0 $x.10: +; CHECK-NEXT: b #20 <$x.12+0x8> +; CHECK-LABEL: 00000000000000bc $x.12: +; CHECK-NEXT: b #4 <$x.12+0x4> +; CHECK-NEXT: mov w0, wzr +; CHECK-NEXT: ldr x30, [sp], #16 +; CHECK-NEXT: ret +define internal i1 @test3() { + %1 = tail call i32 bitcast (i32 (...)* @g to i32 ()*)() + %2 = icmp eq i32 %1, 0 + br i1 %2, label %3, label %5 + +3: ; preds = %0 + callbr void asm sideeffect "1: nop\0A\09.quad c\0A\09b ${1:l}\0A\09.quad ${0:c}", "i,X"(i32* null, i8* blockaddress(@test3, %8)) + to label %4 [label %8] + +4: ; preds = %3 + br label %8 + +5: ; preds = %0 + %6 = tail call i32 bitcast (i32 (...)* @i to i32 ()*)() + %7 = icmp ne i32 %6, 0 + br label %8 + +8: ; preds = %3, %4, %5 + %9 = phi i1 [ %7, %5 ], [ false, %4 ], [ false, %3 ] + ret i1 %9 +} Index: llvm/trunk/test/CodeGen/X86/callbr-asm-obj-file.ll =================================================================== --- llvm/trunk/test/CodeGen/X86/callbr-asm-obj-file.ll +++ llvm/trunk/test/CodeGen/X86/callbr-asm-obj-file.ll @@ -0,0 +1,19 @@ +; RUN: llc < %s -mtriple=x86_64-linux-gnu -filetype=obj -o - \ +; RUN: | llvm-objdump -triple x86_64-linux-gnu -d - \ +; RUN: | FileCheck %s + +; CHECK: 0000000000000000 test1: +; CHECK-NEXT: 0: 74 00 je 0 +; CHECK-NEXT: 2: c3 retq + +define void @test1() { +entry: + callbr void asm sideeffect "je ${0:l}", "X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@test1, %a.b.normal.jump)) + to label %asm.fallthrough [label %a.b.normal.jump] + +asm.fallthrough: + ret void + +a.b.normal.jump: + ret void +}