| ; RUN: llc < %s -mtriple=x86_64-pc-win32 | FileCheck %s |
| |
| %struct.A = type { i8 } |
| %struct.B = type { i32 } |
| %struct.C = type { %struct.B } |
| %struct.D = type { %struct.B } |
| %struct.E = type { %struct.B } |
| |
| declare %struct.A* @A_ctor(%struct.A* returned) |
| declare %struct.B* @B_ctor(%struct.B* returned, i32) |
| |
| declare %struct.A* @A_ctor_nothisret(%struct.A*) |
| declare %struct.B* @B_ctor_nothisret(%struct.B*, i32) |
| |
| define %struct.C* @C_ctor(%struct.C* %this, i32 %y) { |
| entry: |
| ; CHECK-LABEL: C_ctor: |
| ; CHECK: jmp B_ctor # TAILCALL |
| %0 = getelementptr inbounds %struct.C, %struct.C* %this, i64 0, i32 0 |
| %call = tail call %struct.B* @B_ctor(%struct.B* %0, i32 %y) |
| ret %struct.C* %this |
| } |
| |
| define %struct.C* @C_ctor_nothisret(%struct.C* %this, i32 %y) { |
| entry: |
| ; CHECK-LABEL: C_ctor_nothisret: |
| ; CHECK-NOT: jmp B_ctor_nothisret |
| %0 = getelementptr inbounds %struct.C, %struct.C* %this, i64 0, i32 0 |
| %call = tail call %struct.B* @B_ctor_nothisret(%struct.B* %0, i32 %y) |
| ret %struct.C* %this |
| } |
| |
| define %struct.D* @D_ctor(%struct.D* %this, i32 %y) { |
| entry: |
| ; CHECK-LABEL: D_ctor: |
| ; CHECK: movq %rcx, [[SAVETHIS:%r[0-9a-z]+]] |
| ; CHECK: callq A_ctor |
| ; CHECK: movq [[SAVETHIS]], %rcx |
| ; CHECK: jmp B_ctor # TAILCALL |
| %0 = bitcast %struct.D* %this to %struct.A* |
| %call = tail call %struct.A* @A_ctor(%struct.A* %0) |
| %1 = getelementptr inbounds %struct.D, %struct.D* %this, i64 0, i32 0 |
| %call2 = tail call %struct.B* @B_ctor(%struct.B* %1, i32 %y) |
| ; (this next line would never be generated by Clang, actually) |
| %2 = bitcast %struct.A* %call to %struct.D* |
| ret %struct.D* %2 |
| } |
| |
| define %struct.D* @D_ctor_nothisret(%struct.D* %this, i32 %y) { |
| entry: |
| ; CHECK-LABEL: D_ctor_nothisret: |
| ; CHECK: movq %rcx, [[SAVETHIS:%r[0-9a-z]+]] |
| ; CHECK: callq A_ctor_nothisret |
| ; CHECK: movq [[SAVETHIS]], %rcx |
| ; CHECK-NOT: jmp B_ctor_nothisret |
| %0 = bitcast %struct.D* %this to %struct.A* |
| %call = tail call %struct.A* @A_ctor_nothisret(%struct.A* %0) |
| %1 = getelementptr inbounds %struct.D, %struct.D* %this, i64 0, i32 0 |
| %call2 = tail call %struct.B* @B_ctor_nothisret(%struct.B* %1, i32 %y) |
| ; (this next line would never be generated by Clang, actually) |
| %2 = bitcast %struct.A* %call to %struct.D* |
| ret %struct.D* %2 |
| } |
| |
| define %struct.E* @E_ctor(%struct.E* %this, i32 %x) { |
| entry: |
| ; CHECK-LABEL: E_ctor: |
| ; CHECK: movq %rcx, [[SAVETHIS:%r[0-9a-z]+]] |
| ; CHECK: callq B_ctor |
| ; CHECK: movq [[SAVETHIS]], %rcx |
| ; CHECK: jmp B_ctor # TAILCALL |
| %b = getelementptr inbounds %struct.E, %struct.E* %this, i64 0, i32 0 |
| %call = tail call %struct.B* @B_ctor(%struct.B* %b, i32 %x) |
| %call4 = tail call %struct.B* @B_ctor(%struct.B* %b, i32 %x) |
| ret %struct.E* %this |
| } |
| |
| define %struct.E* @E_ctor_nothisret(%struct.E* %this, i32 %x) { |
| entry: |
| ; CHECK-LABEL: E_ctor_nothisret: |
| ; CHECK: movq %rcx, [[SAVETHIS:%r[0-9a-z]+]] |
| ; CHECK: callq B_ctor_nothisret |
| ; CHECK: movq [[SAVETHIS]], %rcx |
| ; CHECK-NOT: jmp B_ctor_nothisret |
| %b = getelementptr inbounds %struct.E, %struct.E* %this, i64 0, i32 0 |
| %call = tail call %struct.B* @B_ctor_nothisret(%struct.B* %b, i32 %x) |
| %call4 = tail call %struct.B* @B_ctor_nothisret(%struct.B* %b, i32 %x) |
| ret %struct.E* %this |
| } |