forked from OSchip/llvm-project
69 lines
2.9 KiB
LLVM
69 lines
2.9 KiB
LLVM
; RUN: llc < %s -mcpu=cortex-a9 | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
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target triple = "thumbv7-apple-ios0.0.0"
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; CHECK: f
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; The vld2 and vst2 are not aligned wrt each other, the second Q loaded is the
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; first one stored.
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; The coalescer must find a super-register larger than QQ to eliminate the copy
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; setting up the vst2 data.
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; CHECK: vld2
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; CHECK-NOT: vorr
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; CHECK-NOT: vmov
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; CHECK: vst2
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define void @f(float* %p, i32 %c) nounwind ssp {
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entry:
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%0 = bitcast float* %p to i8*
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%vld2 = tail call { <4 x float>, <4 x float> } @llvm.arm.neon.vld2.v4f32(i8* %0, i32 4)
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%vld221 = extractvalue { <4 x float>, <4 x float> } %vld2, 1
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%add.ptr = getelementptr inbounds float* %p, i32 8
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%1 = bitcast float* %add.ptr to i8*
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tail call void @llvm.arm.neon.vst2.v4f32(i8* %1, <4 x float> %vld221, <4 x float> undef, i32 4)
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ret void
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}
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; CHECK: f1
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; FIXME: This function still has copies.
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define void @f1(float* %p, i32 %c) nounwind ssp {
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entry:
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%0 = bitcast float* %p to i8*
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%vld2 = tail call { <4 x float>, <4 x float> } @llvm.arm.neon.vld2.v4f32(i8* %0, i32 4)
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%vld221 = extractvalue { <4 x float>, <4 x float> } %vld2, 1
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%add.ptr = getelementptr inbounds float* %p, i32 8
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%1 = bitcast float* %add.ptr to i8*
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%vld22 = tail call { <4 x float>, <4 x float> } @llvm.arm.neon.vld2.v4f32(i8* %1, i32 4)
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%vld2215 = extractvalue { <4 x float>, <4 x float> } %vld22, 0
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tail call void @llvm.arm.neon.vst2.v4f32(i8* %1, <4 x float> %vld221, <4 x float> %vld2215, i32 4)
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ret void
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}
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; CHECK: f2
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; FIXME: This function still has copies.
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define void @f2(float* %p, i32 %c) nounwind ssp {
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entry:
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%0 = bitcast float* %p to i8*
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%vld2 = tail call { <4 x float>, <4 x float> } @llvm.arm.neon.vld2.v4f32(i8* %0, i32 4)
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%vld224 = extractvalue { <4 x float>, <4 x float> } %vld2, 1
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br label %do.body
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do.body: ; preds = %do.body, %entry
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%qq0.0.1.0 = phi <4 x float> [ %vld224, %entry ], [ %vld2216, %do.body ]
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%c.addr.0 = phi i32 [ %c, %entry ], [ %dec, %do.body ]
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%p.addr.0 = phi float* [ %p, %entry ], [ %add.ptr, %do.body ]
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%add.ptr = getelementptr inbounds float* %p.addr.0, i32 8
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%1 = bitcast float* %add.ptr to i8*
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%vld22 = tail call { <4 x float>, <4 x float> } @llvm.arm.neon.vld2.v4f32(i8* %1, i32 4)
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%vld2215 = extractvalue { <4 x float>, <4 x float> } %vld22, 0
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%vld2216 = extractvalue { <4 x float>, <4 x float> } %vld22, 1
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tail call void @llvm.arm.neon.vst2.v4f32(i8* %1, <4 x float> %qq0.0.1.0, <4 x float> %vld2215, i32 4)
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%dec = add nsw i32 %c.addr.0, -1
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%tobool = icmp eq i32 %dec, 0
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br i1 %tobool, label %do.end, label %do.body
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do.end: ; preds = %do.body
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ret void
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}
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declare { <4 x float>, <4 x float> } @llvm.arm.neon.vld2.v4f32(i8*, i32) nounwind readonly
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declare void @llvm.arm.neon.vst2.v4f32(i8*, <4 x float>, <4 x float>, i32) nounwind
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