| ; RUN: llc -march=hexagon -hexagon-initial-cfg-cleanup=0 -pipeliner-experimental-cg=true < %s | FileCheck %s |
| |
| ; Test epilogue generation when reading loop-carried dependency in stage 1 from |
| ; stage 0. Make sure the illegal phi the expender creates gets cleaned up |
| ; correctly during peeling |
| |
| ; CHECK: loop0 |
| ; CHECK: [[REG0:r([0-9]+)]] = add(r{{[0-9]+}},#8) |
| ; CHECK: memw([[REG0]]+#0) |
| ; CHECK: endloop0 |
| |
| ; Function Attrs: nounwind |
| define i32* @f0(i16* nocapture readonly %a0, i32 %a1, i32 %a2, i32 %a3, i16* %b) #0 { |
| b0: |
| br i1 undef, label %b1, label %b3 |
| |
| b1: ; preds = %b0 |
| br label %b2 |
| |
| b2: ; preds = %b2, %b1 |
| %v1 = phi i16* [ %a0, %b1 ], [ %v2, %b2 ] |
| %v2 = phi i16* [ undef, %b1 ], [ %v15, %b2 ] |
| %v3 = phi i32* [ null, %b1 ], [ %v4, %b2 ] |
| %v4 = phi i32* [ null, %b1 ], [ %v14, %b2 ] |
| %v5 = phi i32 [ 0, %b1 ], [ %v13, %b2 ] |
| %v6 = phi i16* [ undef, %b1 ], [ %v12, %b2 ] |
| %a = mul i32 %v5, %a2 |
| %add = getelementptr inbounds i16, i16* %b, i32 %a |
| %v7 = load i16, i16* %add, align 2 |
| %v8 = sext i16 %v7 to i32 |
| %v9 = call i32 @llvm.hexagon.M2.mpy.ll.s0(i32 %v8, i32 %v8) #2 |
| %v92 = call i32 @llvm.hexagon.M2.mpy.ll.s0(i32 %v9, i32 %v9) #2 |
| %v93 = call i32 @llvm.hexagon.M2.mpy.ll.s0(i32 %v92, i32 %v92) #2 |
| %v11 = call i32 @llvm.hexagon.M2.mpy.acc.sat.ll.s0(i32 %v8, i32 undef, i32 undef) #2 |
| store i32 %v11, i32* %v4, align 4 |
| %v12 = getelementptr inbounds i16, i16* %v6, i32 -1 |
| %v13 = add i32 %v5, 1 |
| %v14 = getelementptr inbounds i32, i32* %v3, i32 2 |
| store i32 %v93, i32* %v14, align 4 |
| %v15 = getelementptr inbounds i16, i16* %v1, i32 2 |
| %v16 = icmp slt i32 %v13, %a1 |
| br i1 %v16, label %b2, label %b3 |
| |
| b3: ; preds = %b2, %b0 |
| %out = phi i32* [ null, %b0 ], [ %v14, %b2 ] |
| ret i32* %out |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare i32 @llvm.hexagon.M2.mpy.ll.s0(i32, i32) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare i32 @llvm.hexagon.M2.mpy.acc.sat.ll.s0(i32, i32, i32) #1 |
| |
| attributes #0 = { nounwind "target-cpu"="hexagonv60" } |
| attributes #1 = { nounwind readnone } |
| attributes #2 = { nounwind } |