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a72e83c26e
For historic reasons, the behavior of .align differs between targets. Fortunately, there are alternatives, .p2align and .balign, which make the interpretation of the parameter explicit, and which behave consistently across targets. This patch teaches MC to use .p2align instead of .align, so that people reading code for multiple architectures don't have to remember which way each platform does its .align directive. Differential Revision: http://reviews.llvm.org/D16549 llvm-svn: 258750
212 lines
4.8 KiB
LLVM
212 lines
4.8 KiB
LLVM
; RUN: llc < %s -mcpu=generic -mtriple=i686-pc-linux-gnu -relocation-model=pic -asm-verbose=false -post-RA-scheduler=false | FileCheck %s -check-prefix=LINUX
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@ptr = external global i32*
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@dst = external global i32
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@src = external global i32
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define void @test0() nounwind {
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entry:
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store i32* @dst, i32** @ptr
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%tmp.s = load i32, i32* @src
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store i32 %tmp.s, i32* @dst
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ret void
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; LINUX-LABEL: test0:
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; LINUX: calll .L0$pb
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; LINUX-NEXT: .L0$pb:
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; LINUX-NEXT: popl
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; LINUX: addl $_GLOBAL_OFFSET_TABLE_+(.L{{.*}}-.L0$pb),
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; LINUX: movl dst@GOT(%eax),
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; LINUX: movl ptr@GOT(%eax),
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; LINUX: movl src@GOT(%eax),
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; LINUX: ret
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}
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@ptr2 = global i32* null
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@dst2 = global i32 0
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@src2 = global i32 0
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define void @test1() nounwind {
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entry:
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store i32* @dst2, i32** @ptr2
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%tmp.s = load i32, i32* @src2
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store i32 %tmp.s, i32* @dst2
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ret void
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; LINUX-LABEL: test1:
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; LINUX: calll .L1$pb
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; LINUX-NEXT: .L1$pb:
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; LINUX-NEXT: popl
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; LINUX: addl $_GLOBAL_OFFSET_TABLE_+(.L{{.*}}-.L1$pb), %eax
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; LINUX: movl dst2@GOT(%eax),
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; LINUX: movl ptr2@GOT(%eax),
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; LINUX: movl src2@GOT(%eax),
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; LINUX: ret
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}
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declare i8* @malloc(i32)
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define void @test2() nounwind {
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entry:
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%ptr = call i8* @malloc(i32 40)
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ret void
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; LINUX-LABEL: test2:
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; LINUX: pushl %ebx
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; LINUX-NEXT: subl $8, %esp
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; LINUX-NEXT: calll .L2$pb
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; LINUX-NEXT: .L2$pb:
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; LINUX-NEXT: popl %ebx
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; LINUX: addl $_GLOBAL_OFFSET_TABLE_+(.L{{.*}}-.L2$pb), %ebx
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; LINUX: movl $40, (%esp)
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; LINUX: calll malloc@PLT
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; LINUX: addl $8, %esp
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; LINUX: popl %ebx
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; LINUX: ret
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}
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@pfoo = external global void(...)*
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define void @test3() nounwind {
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entry:
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%tmp = call void(...)*(...) @afoo()
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store void(...)* %tmp, void(...)** @pfoo
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%tmp1 = load void(...)*, void(...)** @pfoo
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call void(...) %tmp1()
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ret void
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; LINUX-LABEL: test3:
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; LINUX: calll .L3$pb
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; LINUX-NEXT: .L3$pb:
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; LINUX: popl
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; LINUX: addl $_GLOBAL_OFFSET_TABLE_+(.L{{.*}}-.L3$pb), %[[REG3:e..]]
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; LINUX: calll afoo@PLT
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; LINUX: movl pfoo@GOT(%[[REG3]]),
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; LINUX: calll *
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}
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declare void(...)* @afoo(...)
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define void @test4() nounwind {
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entry:
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call void(...) @foo()
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ret void
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; LINUX-LABEL: test4:
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; LINUX: calll .L4$pb
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; LINUX: popl %ebx
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; LINUX: addl $_GLOBAL_OFFSET_TABLE_+(.L{{.*}}-.L4$pb), %ebx
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; LINUX: calll foo@PLT
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}
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declare void @foo(...)
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@ptr6 = internal global i32* null
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@dst6 = internal global i32 0
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@src6 = internal global i32 0
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define void @test5() nounwind {
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entry:
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store i32* @dst6, i32** @ptr6
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%tmp.s = load i32, i32* @src6
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store i32 %tmp.s, i32* @dst6
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ret void
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; LINUX-LABEL: test5:
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; LINUX: calll .L5$pb
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; LINUX-NEXT: .L5$pb:
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; LINUX-NEXT: popl %eax
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; LINUX: addl $_GLOBAL_OFFSET_TABLE_+(.L{{.*}}-.L5$pb), %eax
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; LINUX: leal dst6@GOTOFF(%eax), %ecx
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; LINUX: movl %ecx, ptr6@GOTOFF(%eax)
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; LINUX: movl src6@GOTOFF(%eax), %ecx
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; LINUX: movl %ecx, dst6@GOTOFF(%eax)
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; LINUX: ret
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}
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;; Test constant pool references.
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define double @test6(i32 %a.u) nounwind {
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entry:
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%tmp = icmp eq i32 %a.u,0
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%retval = select i1 %tmp, double 4.561230e+02, double 1.234560e+02
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ret double %retval
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; LINUX: .LCPI6_0:
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; LINUX-LABEL: test6:
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; LINUX: calll .L6$pb
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; LINUX: .L6$pb:
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; LINUX: addl $_GLOBAL_OFFSET_TABLE_+(.L{{.*}}-.L6$pb),
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; LINUX: fldl .LCPI6_0@GOTOFF(
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}
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;; Test jump table references.
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define void @test7(i32 %n.u) nounwind {
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entry:
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switch i32 %n.u, label %bb12 [i32 1, label %bb i32 2, label %bb6 i32 4, label %bb7 i32 5, label %bb8 i32 6, label %bb10 i32 7, label %bb1 i32 8, label %bb3 i32 9, label %bb4 i32 10, label %bb9 i32 11, label %bb2 i32 12, label %bb5 i32 13, label %bb11 ]
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bb:
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tail call void(...) @foo1()
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ret void
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bb1:
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tail call void(...) @foo2()
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ret void
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bb2:
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tail call void(...) @foo6()
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ret void
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bb3:
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tail call void(...) @foo3()
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ret void
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bb4:
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tail call void(...) @foo4()
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ret void
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bb5:
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tail call void(...) @foo5()
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ret void
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bb6:
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tail call void(...) @foo1()
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ret void
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bb7:
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tail call void(...) @foo2()
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ret void
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bb8:
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tail call void(...) @foo6()
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ret void
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bb9:
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tail call void(...) @foo3()
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ret void
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bb10:
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tail call void(...) @foo4()
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ret void
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bb11:
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tail call void(...) @foo5()
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ret void
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bb12:
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tail call void(...) @foo6()
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ret void
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; LINUX-LABEL: test7:
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; LINUX: calll .L7$pb
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; LINUX: .L7$pb:
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; LINUX: addl $_GLOBAL_OFFSET_TABLE_+(.L{{.*}}-.L7$pb),
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; LINUX: .LJTI7_0@GOTOFF(
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; LINUX: jmpl *
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; LINUX: .p2align 2
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; LINUX-NEXT: .LJTI7_0:
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; LINUX: .long .LBB7_2@GOTOFF
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; LINUX: .long .LBB7_8@GOTOFF
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; LINUX: .long .LBB7_4@GOTOFF
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; LINUX: .long .LBB7_6@GOTOFF
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; LINUX: .long .LBB7_5@GOTOFF
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; LINUX: .long .LBB7_8@GOTOFF
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; LINUX: .long .LBB7_7@GOTOFF
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}
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declare void @foo1(...)
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declare void @foo2(...)
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declare void @foo6(...)
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declare void @foo3(...)
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declare void @foo4(...)
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declare void @foo5(...)
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