| ; RUN: llc -mtriple armv7a--none-eabi < %s -enable-ipra | FileCheck %s |
| |
| ; A linkone_odr function (the same applies to available_externally, linkonce, |
| ; weak, common, extern_weak and weak_odr) could be replaced with a |
| ; differently-compiled version of the same source at link time, which might use |
| ; different registers, so we can't do IPRA on it. |
| define linkonce_odr void @leaf_linkonce_odr() { |
| entry: |
| ret void |
| } |
| define void @test_linkonce_odr() { |
| ; CHECK-LABEL: test_linkonce_odr: |
| entry: |
| ; CHECK: ASM1: r3 |
| ; CHECK: mov [[TEMP:r[0-9]+]], r3 |
| ; CHECK: bl leaf_linkonce_odr |
| ; CHECK: mov r3, [[TEMP]] |
| ; CHECK: ASM2: r3 |
| %0 = tail call i32 asm sideeffect "// ASM1: $0", "={r3},0"(i32 undef) |
| tail call void @leaf_linkonce_odr() |
| %1 = tail call i32 asm sideeffect "// ASM2: $0", "={r3},0"(i32 %0) |
| ret void |
| } |
| |
| ; This function has external linkage (the same applies to private, internal and |
| ; appending), so the version we see here is guaranteed to be the version |
| ; selected by the linker, so we can do IPRA. |
| define external void @leaf_external() { |
| entry: |
| ret void |
| } |
| define void @test_external() { |
| ; CHECK-LABEL: test_external: |
| entry: |
| ; CHECK: ASM1: r3 |
| ; CHECK-NOT: r3 |
| ; CHECK: bl leaf_external |
| ; CHECK-NOT: r3 |
| ; CHECK: ASM2: r3 |
| %0 = tail call i32 asm sideeffect "// ASM1: $0", "={r3},0"(i32 undef) |
| tail call void @leaf_external() |
| %1 = tail call i32 asm sideeffect "// ASM2: $0", "={r3},0"(i32 %0) |
| ret void |
| } |