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1; RUN: llc -mtriple armv7a--none-eabi < %s -enable-ipra | FileCheck %s2 3; A linkone_odr function (the same applies to available_externally, linkonce,4; weak, common, extern_weak and weak_odr) could be replaced with a5; differently-compiled version of the same source at link time, which might use6; different registers, so we can't do IPRA on it.7define linkonce_odr void @leaf_linkonce_odr() {8entry:9 ret void10}11define void @test_linkonce_odr() {12; CHECK-LABEL: test_linkonce_odr:13entry:14; CHECK: ASM1: r315; CHECK: mov [[TEMP:r[0-9]+]], r316; CHECK: bl leaf_linkonce_odr17; CHECK: mov r3, [[TEMP]]18; CHECK: ASM2: r319 %0 = tail call i32 asm sideeffect "// ASM1: $0", "={r3},0"(i32 undef)20 tail call void @leaf_linkonce_odr()21 %1 = tail call i32 asm sideeffect "// ASM2: $0", "={r3},0"(i32 %0)22 ret void23}24 25; This function has external linkage (the same applies to private, internal and26; appending), so the version we see here is guaranteed to be the version27; selected by the linker, so we can do IPRA.28define external void @leaf_external() {29entry:30 ret void31}32define void @test_external() {33; CHECK-LABEL: test_external:34entry:35; CHECK: ASM1: r336; CHECK-NOT: r337; CHECK: bl leaf_external38; CHECK-NOT: r339; CHECK: ASM2: r340 %0 = tail call i32 asm sideeffect "// ASM1: $0", "={r3},0"(i32 undef)41 tail call void @leaf_external()42 %1 = tail call i32 asm sideeffect "// ASM2: $0", "={r3},0"(i32 %0)43 ret void44}45