91 lines
2.6 KiB
LLVM
91 lines
2.6 KiB
LLVM
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; RUN: llc -fast-isel -O0 -mcpu=generic -mtriple=i386-apple-darwin10 -relocation-model=pic < %s | FileCheck %s
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; 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
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; This should use flds to set the return value.
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; CHECK-LABEL: test0:
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; CHECK: flds
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; CHECK: retl
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@G = external global float
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define float @test0() nounwind {
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%t = load float, float* @G
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ret float %t
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}
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; This should pop 4 bytes on return.
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; CHECK-LABEL: test1:
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; CHECK: retl $4
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define void @test1({i32, i32, i32, i32}* sret({i32, i32, i32, i32}) %p) nounwind {
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store {i32, i32, i32, i32} zeroinitializer, {i32, i32, i32, i32}* %p
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ret void
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}
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; This should pop 8 bytes on return.
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; CHECK-LABEL: thiscallfun:
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; CHECK: retl $8
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define x86_thiscallcc i32 @thiscallfun(i32* %this, i32 %a, i32 %b) nounwind {
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; STDERR-NOT: FastISel missed terminator: ret i32 12345
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ret i32 12345
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}
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; Here, the callee pop doesn't fit the 16 bit immediate -- see x86-big-ret.ll
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; This checks that -fast-isel doesn't miscompile this.
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; CHECK-LABEL: thiscall_large:
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; CHECK: popl %ecx
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; CHECK-NEXT: addl $65536, %esp
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; CHECK-NEXT: pushl %ecx
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; CHECK-NEXT: retl
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define x86_thiscallcc void @thiscall_large(i32* %this, [65533 x i8]* byval([65533 x i8]) %b) nounwind {
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ret void
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}
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; This should pop 4 bytes on return.
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; CHECK-LABEL: stdcallfun:
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; CHECK: retl $4
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define x86_stdcallcc i32 @stdcallfun(i32 %a) nounwind {
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; STDERR-NOT: FastISel missed terminator: ret i32 54321
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ret i32 54321
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}
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; Properly initialize the pic base.
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; CHECK-LABEL: test2:
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; CHECK-NOT: HHH
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; CHECK: call{{.*}}L5$pb
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; CHECK-NEXT: L5$pb:
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; CHECK-NEXT: pop
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; CHECK: HHH
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; CHECK: retl
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@HHH = external global i32
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define i32 @test2() nounwind {
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%t = load i32, i32* @HHH
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ret i32 %t
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}
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; Check that we fast-isel sret, and handle the callee-pops behavior correctly.
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%struct.a = type { i64, i64, i64 }
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define void @test3() nounwind ssp {
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entry:
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%tmp = alloca %struct.a, align 8
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call void @test3sret(%struct.a* sret(%struct.a) %tmp)
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ret void
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; CHECK-LABEL: test3:
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; CHECK: subl $44
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; CHECK: leal 16(%esp)
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; CHECK: calll _test3sret
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; CHECK: addl $40
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}
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declare void @test3sret(%struct.a* sret(%struct.a))
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; Check that fast-isel sret works with fastcc (and does not callee-pop)
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define void @test4() nounwind ssp {
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entry:
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%tmp = alloca %struct.a, align 8
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call fastcc void @test4fastccsret(%struct.a* sret(%struct.a) %tmp)
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ret void
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; CHECK-LABEL: test4:
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; CHECK: subl $28
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; CHECK: movl %esp, %ecx
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; CHECK: calll _test4fastccsret
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; CHECK: addl $28
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}
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declare fastcc void @test4fastccsret(%struct.a* sret(%struct.a))
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