1; RUN: llc < %s -mtriple=aarch64-apple-ios | FileCheck %s 2; RUN: llc < %s -mtriple=aarch64-apple-ios -enable-shrink-wrap=true | FileCheck --check-prefix=CHECK %s 3; Shrink wrapping currently does not kick in because we have a TLS CALL 4; in the entry block and it will clobber the link register. 5 6%struct.S = type { i8 } 7 8@sg = internal thread_local global %struct.S zeroinitializer, align 1 9@__dso_handle = external global i8 10@__tls_guard = internal thread_local unnamed_addr global i1 false 11 12declare %struct.S* @_ZN1SC1Ev(%struct.S* returned) 13declare %struct.S* @_ZN1SD1Ev(%struct.S* returned) 14declare i32 @_tlv_atexit(void (i8*)*, i8*, i8*) 15 16define cxx_fast_tlscc nonnull %struct.S* @_ZTW2sg() nounwind { 17 %.b.i = load i1, i1* @__tls_guard, align 1 18 br i1 %.b.i, label %__tls_init.exit, label %init.i 19 20init.i: 21 store i1 true, i1* @__tls_guard, align 1 22 %call.i.i = tail call %struct.S* @_ZN1SC1Ev(%struct.S* nonnull @sg) 23 %1 = tail call i32 @_tlv_atexit(void (i8*)* nonnull bitcast (%struct.S* (%struct.S*)* @_ZN1SD1Ev to void (i8*)*), i8* nonnull getelementptr inbounds (%struct.S, %struct.S* @sg, i64 0, i32 0), i8* nonnull @__dso_handle) 24 br label %__tls_init.exit 25 26__tls_init.exit: 27 ret %struct.S* @sg 28} 29 30; CHECK-LABEL: _ZTW2sg 31; CHECK-NOT: stp d31, d30 32; CHECK-NOT: stp d29, d28 33; CHECK-NOT: stp d27, d26 34; CHECK-NOT: stp d25, d24 35; CHECK-NOT: stp d23, d22 36; CHECK-NOT: stp d21, d20 37; CHECK-NOT: stp d19, d18 38; CHECK-NOT: stp d17, d16 39; CHECK-NOT: stp d7, d6 40; CHECK-NOT: stp d5, d4 41; CHECK-NOT: stp d3, d2 42; CHECK-NOT: stp d1, d0 43; CHECK-NOT: stp x20, x19 44; CHECK-NOT: stp x14, x13 45; CHECK-NOT: stp x12, x11 46; CHECK-NOT: stp x10, x9 47; CHECK-NOT: stp x8, x7 48; CHECK-NOT: stp x6, x5 49; CHECK-NOT: stp x4, x3 50; CHECK-NOT: stp x2, x1 51; CHECK: blr 52; CHECK: tbnz w{{.*}}, #0, [[BB_end:.?LBB0_[0-9]+]] 53; CHECK: blr 54; CHECK: tlv_atexit 55; CHECK: [[BB_end]]: 56; CHECK: blr 57; CHECK-NOT: ldp x2, x1 58; CHECK-NOT: ldp x4, x3 59; CHECK-NOT: ldp x6, x5 60; CHECK-NOT: ldp x8, x7 61; CHECK-NOT: ldp x10, x9 62; CHECK-NOT: ldp x12, x11 63; CHECK-NOT: ldp x14, x13 64; CHECK-NOT: ldp x20, x19 65; CHECK-NOT: ldp d1, d0 66; CHECK-NOT: ldp d3, d2 67; CHECK-NOT: ldp d5, d4 68; CHECK-NOT: ldp d7, d6 69; CHECK-NOT: ldp d17, d16 70; CHECK-NOT: ldp d19, d18 71; CHECK-NOT: ldp d21, d20 72; CHECK-NOT: ldp d23, d22 73; CHECK-NOT: ldp d25, d24 74; CHECK-NOT: ldp d27, d26 75; CHECK-NOT: ldp d29, d28 76; CHECK-NOT: ldp d31, d30 77