1; RUN: llc -fast-isel -O0 -mcpu=generic -mtriple=i386-apple-darwin10 -relocation-model=pic < %s | FileCheck %s 2; RUN: llc -fast-isel -O0 -mcpu=generic -mtriple=i386-apple-darwin10 -relocation-model=pic < %s -pass-remarks-missed=isel 2>&1 >/dev/null | FileCheck -check-prefix=STDERR -allow-empty %s 3 4; This should use flds to set the return value. 5; CHECK-LABEL: test0: 6; CHECK: flds 7; CHECK: retl 8@G = external global float 9define float @test0() nounwind { 10 %t = load float, float* @G 11 ret float %t 12} 13 14; This should pop 4 bytes on return. 15; CHECK-LABEL: test1: 16; CHECK: retl $4 17define void @test1({i32, i32, i32, i32}* sret %p) nounwind { 18 store {i32, i32, i32, i32} zeroinitializer, {i32, i32, i32, i32}* %p 19 ret void 20} 21 22; This should pop 8 bytes on return. 23; CHECK-LABEL: thiscallfun: 24; CHECK: retl $8 25define x86_thiscallcc i32 @thiscallfun(i32* %this, i32 %a, i32 %b) nounwind { 26; STDERR-NOT: FastISel missed terminator: ret i32 12345 27 ret i32 12345 28} 29 30; Here, the callee pop doesn't fit the 16 bit immediate -- see x86-big-ret.ll 31; This checks that -fast-isel doesn't miscompile this. 32; CHECK-LABEL: thiscall_large: 33; CHECK: popl %ecx 34; CHECK-NEXT: addl $65536, %esp 35; CHECK-NEXT: pushl %ecx 36; CHECK-NEXT: retl 37define x86_thiscallcc void @thiscall_large(i32* %this, [65533 x i8]* byval %b) nounwind { 38 ret void 39} 40 41; This should pop 4 bytes on return. 42; CHECK-LABEL: stdcallfun: 43; CHECK: retl $4 44define x86_stdcallcc i32 @stdcallfun(i32 %a) nounwind { 45; STDERR-NOT: FastISel missed terminator: ret i32 54321 46 ret i32 54321 47} 48 49; Properly initialize the pic base. 50; CHECK-LABEL: test2: 51; CHECK-NOT: HHH 52; CHECK: call{{.*}}L5$pb 53; CHECK-NEXT: L5$pb: 54; CHECK-NEXT: pop 55; CHECK: HHH 56; CHECK: retl 57@HHH = external global i32 58define i32 @test2() nounwind { 59 %t = load i32, i32* @HHH 60 ret i32 %t 61} 62 63; Check that we fast-isel sret, and handle the callee-pops behavior correctly. 64%struct.a = type { i64, i64, i64 } 65define void @test3() nounwind ssp { 66entry: 67 %tmp = alloca %struct.a, align 8 68 call void @test3sret(%struct.a* sret %tmp) 69 ret void 70; CHECK-LABEL: test3: 71; CHECK: subl $44 72; CHECK: leal 16(%esp) 73; CHECK: calll _test3sret 74; CHECK: addl $40 75} 76declare void @test3sret(%struct.a* sret) 77 78; Check that fast-isel sret works with fastcc (and does not callee-pop) 79define void @test4() nounwind ssp { 80entry: 81 %tmp = alloca %struct.a, align 8 82 call fastcc void @test4fastccsret(%struct.a* sret %tmp) 83 ret void 84; CHECK-LABEL: test4: 85; CHECK: subl $28 86; CHECK: movl %esp, %ecx 87; CHECK: calll _test4fastccsret 88; CHECK: addl $28 89} 90declare fastcc void @test4fastccsret(%struct.a* sret) 91