85 lines
2.9 KiB
LLVM
85 lines
2.9 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+mmx,+sse2 | FileCheck %s
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%SA = type <{ %union.anon, i32, [4 x i8], i8*, i8*, i8*, i32, [4 x i8] }>
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%union.anon = type { <1 x i64> }
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; Check that extra movd (copy) instructions aren't generated.
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define i32 @test(%SA* %pSA, i16* %A, i32 %B, i32 %C, i32 %D, i8* %E) {
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entry:
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; CHECK-LABEL: test
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; CHECK: # BB#0:
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; CHECK-NEXT: pshufw
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; CHECK-NEXT: movd
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; CHECK-NOT: movd
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; CHECK-NEXT: testl
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%shl = shl i32 1, %B
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%shl1 = shl i32 %C, %B
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%shl2 = shl i32 1, %D
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%v = getelementptr inbounds %SA, %SA* %pSA, i64 0, i32 0, i32 0
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%v0 = load <1 x i64>, <1 x i64>* %v, align 8
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%SA0 = getelementptr inbounds %SA, %SA* %pSA, i64 0, i32 1
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%v1 = load i32, i32* %SA0, align 4
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%SA1 = getelementptr inbounds %SA, %SA* %pSA, i64 0, i32 3
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%v2 = load i8*, i8** %SA1, align 8
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%SA2 = getelementptr inbounds %SA, %SA* %pSA, i64 0, i32 4
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%v3 = load i8*, i8** %SA2, align 8
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%v4 = bitcast <1 x i64> %v0 to <4 x i16>
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%v5 = bitcast <4 x i16> %v4 to x86_mmx
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%v6 = tail call x86_mmx @llvm.x86.sse.pshuf.w(x86_mmx %v5, i8 -18)
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%v7 = bitcast x86_mmx %v6 to <4 x i16>
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%v8 = bitcast <4 x i16> %v7 to <1 x i64>
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%v9 = extractelement <1 x i64> %v8, i32 0
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%v10 = bitcast i64 %v9 to <2 x i32>
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%v11 = extractelement <2 x i32> %v10, i32 0
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%cmp = icmp eq i32 %v11, 0
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br i1 %cmp, label %if.A, label %if.B
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if.A:
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; CHECK: %if.A
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; CHECK-NEXT: movd
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; CHECK-NEXT: psllq
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%pa = phi <1 x i64> [ %v8, %entry ], [ %vx, %if.C ]
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%v17 = extractelement <1 x i64> %pa, i32 0
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%v18 = bitcast i64 %v17 to x86_mmx
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%v19 = tail call x86_mmx @llvm.x86.mmx.pslli.q(x86_mmx %v18, i32 %B) #2
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%v20 = bitcast x86_mmx %v19 to i64
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%v21 = insertelement <1 x i64> undef, i64 %v20, i32 0
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%cmp3 = icmp eq i64 %v20, 0
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br i1 %cmp3, label %if.C, label %merge
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if.B:
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%v34 = bitcast <1 x i64> %v8 to <4 x i16>
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%v35 = bitcast <4 x i16> %v34 to x86_mmx
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%v36 = tail call x86_mmx @llvm.x86.sse.pshuf.w(x86_mmx %v35, i8 -18)
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%v37 = bitcast x86_mmx %v36 to <4 x i16>
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%v38 = bitcast <4 x i16> %v37 to <1 x i64>
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br label %if.C
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if.C:
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%vx = phi <1 x i64> [ %v21, %if.A ], [ %v38, %if.B ]
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%cvt = bitcast <1 x i64> %vx to <2 x i32>
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%ex = extractelement <2 x i32> %cvt, i32 0
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%cmp2 = icmp eq i32 %ex, 0
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br i1 %cmp2, label %if.A, label %merge
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merge:
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; CHECK: %merge
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; CHECK-NOT: movd
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; CHECK-NEXT: pshufw
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%vy = phi <1 x i64> [ %v21, %if.A ], [ %vx, %if.C ]
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%v130 = bitcast <1 x i64> %vy to <4 x i16>
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%v131 = bitcast <4 x i16> %v130 to x86_mmx
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%v132 = tail call x86_mmx @llvm.x86.sse.pshuf.w(x86_mmx %v131, i8 -18)
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%v133 = bitcast x86_mmx %v132 to <4 x i16>
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%v134 = bitcast <4 x i16> %v133 to <1 x i64>
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%v135 = extractelement <1 x i64> %v134, i32 0
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%v136 = bitcast i64 %v135 to <2 x i32>
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%v137 = extractelement <2 x i32> %v136, i32 0
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ret i32 %v137
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}
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declare x86_mmx @llvm.x86.sse.pshuf.w(x86_mmx, i8)
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declare x86_mmx @llvm.x86.mmx.pslli.q(x86_mmx, i32)
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