81 lines
2.8 KiB
LLVM
81 lines
2.8 KiB
LLVM
; RUN: llc < %s -march=bpf -verify-machineinstrs | FileCheck %s
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; RUN: llc < %s -march=bpf -mattr=+alu32 -verify-machineinstrs | FileCheck --check-prefix=CHECK-32 %s
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;
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; void cal1(unsigned short *a, unsigned long *b, unsigned int k)
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; {
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; unsigned short e;
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;
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; e = *a;
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; for (unsigned int i = 0; i < k; i++) {
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; b[i] = e;
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; e = ~e;
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; }
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; }
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;
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; void cal2(unsigned short *a, unsigned int *b, unsigned int k)
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; {
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; unsigned short e;
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;
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; e = *a;
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; for (unsigned int i = 0; i < k; i++) {
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; b[i] = e;
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; e = ~e;
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; }
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; }
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; Function Attrs: nofree norecurse nounwind optsize
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define dso_local void @cal1(i16* nocapture readonly %a, i64* nocapture %b, i32 %k) local_unnamed_addr #0 {
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entry:
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%cmp8 = icmp eq i32 %k, 0
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br i1 %cmp8, label %for.cond.cleanup, label %for.body.preheader
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for.body.preheader: ; preds = %entry
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%0 = load i16, i16* %a, align 2
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%wide.trip.count = zext i32 %k to i64
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br label %for.body
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for.cond.cleanup: ; preds = %for.body, %entry
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ret void
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for.body: ; preds = %for.body, %for.body.preheader
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%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
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%e.09 = phi i16 [ %0, %for.body.preheader ], [ %neg, %for.body ]
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%conv = zext i16 %e.09 to i64
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%arrayidx = getelementptr inbounds i64, i64* %b, i64 %indvars.iv
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; CHECK: r{{[0-9]+}} &= 65535
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; CHECK-32: r{{[0-9]+}} &= 65535
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store i64 %conv, i64* %arrayidx, align 8
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%neg = xor i16 %e.09, -1
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count
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br i1 %exitcond, label %for.cond.cleanup, label %for.body
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}
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; Function Attrs: nofree norecurse nounwind optsize
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define dso_local void @cal2(i16* nocapture readonly %a, i32* nocapture %b, i32 %k) local_unnamed_addr #0 {
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entry:
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%cmp8 = icmp eq i32 %k, 0
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br i1 %cmp8, label %for.cond.cleanup, label %for.body.preheader
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for.body.preheader: ; preds = %entry
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%0 = load i16, i16* %a, align 2
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%wide.trip.count = zext i32 %k to i64
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br label %for.body
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for.cond.cleanup: ; preds = %for.body, %entry
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ret void
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for.body: ; preds = %for.body, %for.body.preheader
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%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
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%e.09 = phi i16 [ %0, %for.body.preheader ], [ %neg, %for.body ]
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%conv = zext i16 %e.09 to i32
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%arrayidx = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
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; CHECK: r{{[0-9]+}} &= 65535
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; CHECK-32: w{{[0-9]+}} &= 65535
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store i32 %conv, i32* %arrayidx, align 4
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%neg = xor i16 %e.09, -1
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count
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br i1 %exitcond, label %for.cond.cleanup, label %for.body
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}
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