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llvm-project/llvm/test/CodeGen/X86/mmx-arg-passing2.ll

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Eliminate more uses of llvm-as and llvm-dis. llvm-svn: 81290
2009-09-09 07:54:48 +08:00
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+mmx,+sse2 | grep movdq2q | count 2
Massive rewrite of MMX: The x86_mmx type is used for MMX intrinsics, parameters and return values where these use MMX registers, and is also supported in load, store, and bitcast. Only the above operations generate MMX instructions, and optimizations do not operate on or produce MMX intrinsics. MMX-sized vectors <2 x i32> etc. are lowered to XMM or split into smaller pieces. Optimizations may occur on these forms and the result casted back to x86_mmx, provided the result feeds into a previous existing x86_mmx operation. The point of all this is prevent optimizations from introducing MMX operations, which is unsafe due to the EMMS problem. llvm-svn: 115243
2010-10-01 07:57:10 +08:00
; Since the add is not an MMX add, we don't have a movq2dq any more.
Special handling for MMX values being passed in either GPR64 or lower 64-bits of XMM registers. llvm-svn: 50289
2008-04-26 03:11:04 +08:00
@g_v8qi = external global <8 x i8>
define void @t1() nounwind {
%tmp3 = load <8 x i8>* @g_v8qi, align 8
Massive rewrite of MMX: The x86_mmx type is used for MMX intrinsics, parameters and return values where these use MMX registers, and is also supported in load, store, and bitcast. Only the above operations generate MMX instructions, and optimizations do not operate on or produce MMX intrinsics. MMX-sized vectors <2 x i32> etc. are lowered to XMM or split into smaller pieces. Optimizations may occur on these forms and the result casted back to x86_mmx, provided the result feeds into a previous existing x86_mmx operation. The point of all this is prevent optimizations from introducing MMX operations, which is unsafe due to the EMMS problem. llvm-svn: 115243
2010-10-01 07:57:10 +08:00
%tmp3a = bitcast <8 x i8> %tmp3 to x86_mmx
%tmp4 = tail call i32 (...)* @pass_v8qi( x86_mmx %tmp3a ) nounwind
Special handling for MMX values being passed in either GPR64 or lower 64-bits of XMM registers. llvm-svn: 50289
2008-04-26 03:11:04 +08:00
ret void
}
Massive rewrite of MMX: The x86_mmx type is used for MMX intrinsics, parameters and return values where these use MMX registers, and is also supported in load, store, and bitcast. Only the above operations generate MMX instructions, and optimizations do not operate on or produce MMX intrinsics. MMX-sized vectors <2 x i32> etc. are lowered to XMM or split into smaller pieces. Optimizations may occur on these forms and the result casted back to x86_mmx, provided the result feeds into a previous existing x86_mmx operation. The point of all this is prevent optimizations from introducing MMX operations, which is unsafe due to the EMMS problem. llvm-svn: 115243
2010-10-01 07:57:10 +08:00
define void @t2(x86_mmx %v1, x86_mmx %v2) nounwind {
%v1a = bitcast x86_mmx %v1 to <8 x i8>
%v2b = bitcast x86_mmx %v2 to <8 x i8>
%tmp3 = add <8 x i8> %v1a, %v2b
%tmp3a = bitcast <8 x i8> %tmp3 to x86_mmx
%tmp4 = tail call i32 (...)* @pass_v8qi( x86_mmx %tmp3a ) nounwind
Special handling for MMX values being passed in either GPR64 or lower 64-bits of XMM registers. llvm-svn: 50289
2008-04-26 03:11:04 +08:00
ret void
}
define void @t3() nounwind {
call void @pass_v1di( <1 x i64> zeroinitializer )
ret void
}
declare i32 @pass_v8qi(...)
declare void @pass_v1di(<1 x i64>)