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030af396d9
This adds two features: "packets", and "nvj". Enabling "packets" allows the compiler to generate instruction packets, while disabling it will prevent it and disable all optimizations that generate them. This feature is enabled by default on all subtargets. The feature "nvj" allows the compiler to generate new-value jumps and it implies "packets". It is enabled on all subtargets. The exception is made for packets with endloop instructions, since they require a certain minimum number of instructions in the packets to which they apply. Disabling "packets" will not prevent hardware loops from being generated. llvm-svn: 327302
83 lines
2.1 KiB
LLVM
83 lines
2.1 KiB
LLVM
; RUN: llc -march=hexagon < %s | FileCheck %s
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; Check that there are no packets with two or more instructions, except
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; for the endloop packet.
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; This is the expected code:
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;
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; p0 = cmp.gt(r3,#0)
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; if (!p0) jump:nt .LBB0_3
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; loop0(.LBB0_2,r3)
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; r3 = memw(r1++#4)
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; r4 = memw(r2++#4)
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; r3 = add(r4,r3)
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; memw(r0++#4) = r3
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; { nop; nop }:endloop0
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; jumpr r31
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; CHECK-LABEL: fred:
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; CHECK: {
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; CHECK-NEXT: cmp
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; CHECK-NEXT: }
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; CHECK: {
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; CHECK-NEXT: jump
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; CHECK-NEXT: }
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; CHECK: {
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; CHECK-NEXT: loop0
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; CHECK-NEXT: }
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; CHECK: {
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; CHECK-NEXT: memw
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; CHECK-NEXT: }
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; CHECK: {
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; CHECK-NEXT: memw
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; CHECK-NEXT: }
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; CHECK: {
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; CHECK-NEXT: add
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; CHECK-NEXT: }
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; CHECK: {
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; CHECK-NEXT: memw
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; CHECK-NEXT: }
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; CHECK: {
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; CHECK-NEXT: nop
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; CHECK-NEXT: nop
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; CHECK-NEXT: }{{[ \t]*}}:endloop0
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; CHECK: {
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; CHECK-NEXT: jumpr r31
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; CHECK-NEXT: }
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target triple = "hexagon"
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define void @fred(i32* nocapture %a0, i32* nocapture readonly %a1, i32* nocapture readonly %a2, i32 %a3) local_unnamed_addr #0 {
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b4:
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%v5 = icmp sgt i32 %a3, 0
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br i1 %v5, label %b6, label %b21
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b6: ; preds = %b4
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br label %b7
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b7: ; preds = %b7, %b6
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%v8 = phi i32 [ %v18, %b7 ], [ 0, %b6 ]
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%v9 = phi i32* [ %v17, %b7 ], [ %a0, %b6 ]
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%v10 = phi i32* [ %v14, %b7 ], [ %a2, %b6 ]
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%v11 = phi i32* [ %v12, %b7 ], [ %a1, %b6 ]
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%v12 = getelementptr inbounds i32, i32* %v11, i32 1
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%v13 = load i32, i32* %v11, align 4
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%v14 = getelementptr inbounds i32, i32* %v10, i32 1
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%v15 = load i32, i32* %v10, align 4
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%v16 = add nsw i32 %v15, %v13
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%v17 = getelementptr inbounds i32, i32* %v9, i32 1
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store i32 %v16, i32* %v9, align 4
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%v18 = add nuw nsw i32 %v8, 1
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%v19 = icmp eq i32 %v18, %a3
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br i1 %v19, label %b20, label %b7
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b20: ; preds = %b7
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br label %b21
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b21: ; preds = %b20, %b4
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ret void
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}
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attributes #0 = { norecurse nounwind "target-cpu"="hexagonv60" "target-features"="-packets" }
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