1 ; RUN: llc < %s -march=ppc64 -mcpu=pwr7 | FileCheck %s 2 target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32:64" 3 target triple = "powerpc64-unknown-linux-gnu" 4 5 define void @foo() nounwind readnone noinline { 6 ret void 7 } 8 9 define weak void @foo_weak() nounwind { 10 ret void 11 } 12 13 ; Calls to local function does not require the TOC restore 'nop' 14 define void @test_direct() nounwind readnone { 15 ; CHECK-LABEL: test_direct: 16 tail call void @foo() nounwind 17 ; CHECK: bl foo 18 ; CHECK-NOT: nop 19 ret void 20 } 21 22 ; Calls to weak function requires a TOC restore 'nop' because they 23 ; may be overridden in a different module. 24 define void @test_weak() nounwind readnone { 25 ; CHECK-LABEL: test_weak: 26 tail call void @foo_weak() nounwind 27 ; CHECK: bl foo 28 ; CHECK-NEXT: nop 29 ret void 30 } 31 32 ; Indirect calls requires a full stub creation 33 define void @test_indirect(void ()* nocapture %fp) nounwind { 34 ; CHECK-LABEL: test_indirect: 35 tail call void %fp() nounwind 36 ; CHECK: ld [[FP:[0-9]+]], 0(3) 37 ; CHECK: ld 11, 16(3) 38 ; CHECK: ld 2, 8(3) 39 ; CHECK-NEXT: mtctr [[FP]] 40 ; CHECK-NEXT: bctrl 41 ; CHECK-NEXT: ld 2, 40(1) 42 ret void 43 } 44 45 ; Absolute values must use the regular indirect call sequence 46 ; The main purpose of this test is to ensure that BLA is not 47 ; used on 64-bit SVR4 (as e.g. on Darwin). 48 define void @test_abs() nounwind { 49 ; CHECK-LABEL: test_abs: 50 tail call void inttoptr (i64 1024 to void ()*)() nounwind 51 ; CHECK: ld [[FP:[0-9]+]], 1024(0) 52 ; CHECK: ld 11, 1040(0) 53 ; CHECK: ld 2, 1032(0) 54 ; CHECK-NEXT: mtctr [[FP]] 55 ; CHECK-NEXT: bctrl 56 ; CHECK-NEXT: ld 2, 40(1) 57 ret void 58 } 59 60 declare double @sin(double) nounwind 61 62 ; External functions call should also have a 'nop' 63 define double @test_external(double %x) nounwind { 64 ; CHECK-LABEL: test_external: 65 %call = tail call double @sin(double %x) nounwind 66 ; CHECK: bl sin 67 ; CHECK-NEXT: nop 68 ret double %call 69 } 70 71 ; The 'ld 2, 40(1)' really must always come directly after the bctrl to make 72 ; the unwinding code in libgcc happy. 73 @g = external global void ()* 74 declare void @h(i64) 75 define void @test_indir_toc_reload(i64 %x) { 76 %1 = load void ()*, void ()** @g 77 call void %1() 78 call void @h(i64 %x) 79 ret void 80 81 ; CHECK-LABEL: @test_indir_toc_reload 82 ; CHECK: bctrl 83 ; CHECK-NEXT: ld 2, 40(1) 84 ; CHECK: blr 85 } 86 87
