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65 lines
2.6 KiB
LLVM
65 lines
2.6 KiB
LLVM
; RUN: llc < %s -o - -march=x86 -mattr=+mmx | FileCheck %s
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; There are no MMX instructions here. We use add+adcl for the adds.
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define <1 x i64> @unsigned_add3(<1 x i64>* %a, <1 x i64>* %b, i32 %count) nounwind {
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entry:
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%tmp2942 = icmp eq i32 %count, 0 ; <i1> [#uses=1]
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br i1 %tmp2942, label %bb31, label %bb26
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bb26: ; preds = %bb26, %entry
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; CHECK: addl
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; CHECK: adcl
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%i.037.0 = phi i32 [ 0, %entry ], [ %tmp25, %bb26 ] ; <i32> [#uses=3]
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%sum.035.0 = phi <1 x i64> [ zeroinitializer, %entry ], [ %tmp22, %bb26 ] ; <<1 x i64>> [#uses=1]
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%tmp13 = getelementptr <1 x i64>* %b, i32 %i.037.0 ; <<1 x i64>*> [#uses=1]
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%tmp14 = load <1 x i64>* %tmp13 ; <<1 x i64>> [#uses=1]
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%tmp18 = getelementptr <1 x i64>* %a, i32 %i.037.0 ; <<1 x i64>*> [#uses=1]
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%tmp19 = load <1 x i64>* %tmp18 ; <<1 x i64>> [#uses=1]
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%tmp21 = add <1 x i64> %tmp19, %tmp14 ; <<1 x i64>> [#uses=1]
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%tmp22 = add <1 x i64> %tmp21, %sum.035.0 ; <<1 x i64>> [#uses=2]
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%tmp25 = add i32 %i.037.0, 1 ; <i32> [#uses=2]
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%tmp29 = icmp ult i32 %tmp25, %count ; <i1> [#uses=1]
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br i1 %tmp29, label %bb26, label %bb31
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bb31: ; preds = %bb26, %entry
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%sum.035.1 = phi <1 x i64> [ zeroinitializer, %entry ], [ %tmp22, %bb26 ] ; <<1 x i64>> [#uses=1]
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ret <1 x i64> %sum.035.1
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}
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; This is the original test converted to use MMX intrinsics.
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define <1 x i64> @unsigned_add3a(x86_mmx* %a, x86_mmx* %b, i32 %count) nounwind {
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entry:
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%tmp2943 = bitcast <1 x i64><i64 0> to x86_mmx
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%tmp2942 = icmp eq i32 %count, 0 ; <i1> [#uses=1]
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br i1 %tmp2942, label %bb31, label %bb26
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bb26: ; preds = %bb26, %entry
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; CHECK: movq ({{.*}},8), %mm
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; CHECK: paddq ({{.*}},8), %mm
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; CHECK: paddq %mm{{[0-7]}}, %mm
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%i.037.0 = phi i32 [ 0, %entry ], [ %tmp25, %bb26 ] ; <i32> [#uses=3]
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%sum.035.0 = phi x86_mmx [ %tmp2943, %entry ], [ %tmp22, %bb26 ] ; <x86_mmx> [#uses=1]
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%tmp13 = getelementptr x86_mmx* %b, i32 %i.037.0 ; <x86_mmx*> [#uses=1]
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%tmp14 = load x86_mmx* %tmp13 ; <x86_mmx> [#uses=1]
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%tmp18 = getelementptr x86_mmx* %a, i32 %i.037.0 ; <x86_mmx*> [#uses=1]
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%tmp19 = load x86_mmx* %tmp18 ; <x86_mmx> [#uses=1]
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%tmp21 = call x86_mmx @llvm.x86.mmx.padd.q (x86_mmx %tmp19, x86_mmx %tmp14) ; <x86_mmx> [#uses=1]
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%tmp22 = call x86_mmx @llvm.x86.mmx.padd.q (x86_mmx %tmp21, x86_mmx %sum.035.0) ; <x86_mmx> [#uses=2]
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%tmp25 = add i32 %i.037.0, 1 ; <i32> [#uses=2]
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%tmp29 = icmp ult i32 %tmp25, %count ; <i1> [#uses=1]
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br i1 %tmp29, label %bb26, label %bb31
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bb31: ; preds = %bb26, %entry
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%sum.035.1 = phi x86_mmx [ %tmp2943, %entry ], [ %tmp22, %bb26 ] ; <x86_mmx> [#uses=1]
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%t = bitcast x86_mmx %sum.035.1 to <1 x i64>
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ret <1 x i64> %t
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}
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declare x86_mmx @llvm.x86.mmx.padd.q(x86_mmx, x86_mmx)
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