forked from OSchip/llvm-project
127 lines
3.3 KiB
LLVM
127 lines
3.3 KiB
LLVM
; RUN: llc -O2 -march=bpfel -mcpu=v2 -mattr=+alu32 < %s | FileCheck %s
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;
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; long long select_u(unsigned a, unsigned b, long long c, long long d)
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; {
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; if (a > b)
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; return c;
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; else
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; return d;
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; }
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;
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; long long select_u_2(unsigned a, unsigned long long b, long long c, long long d)
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; {
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; if (a > b)
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; return c;
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; else
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; return d;
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; }
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;
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; long long select_s(signed a, signed b, long long c, long long d)
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; {
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; if (a > b)
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; return c;
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; else
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; return d;
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; }
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;
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; long long bar ();
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;
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; int foo (int b, int c)
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; {
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; unsigned int i32_val = (unsigned int) bar();
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;
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; if (i32_val < 10)
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; return b;
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; else
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; return c;
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; }
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;
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; int *inc_p (int *p, unsigned a)
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; {
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; return p + a;
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; }
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; Function Attrs: norecurse nounwind readnone
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define dso_local i64 @select_u(i32 %a, i32 %b, i64 %c, i64 %d) local_unnamed_addr #0 {
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; CHECK-LABEL: select_u:
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entry:
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%cmp = icmp ugt i32 %a, %b
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%c.d = select i1 %cmp, i64 %c, i64 %d
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; CHECK: r{{[0-9]+}} = w{{[0-9]+}}
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; CHECK-NOT: r{{[0-9]+}} <<= 32
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; CHECK-NOT: r{{[0-9]+}} >>= 32
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; CHECK: if r{{[0-9]+}} {{<|>}} r{{[0-9]+}} goto
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ret i64 %c.d
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}
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; Function Attrs: norecurse nounwind readnone
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define dso_local i64 @select_u_2(i32 %a, i64 %b, i64 %c, i64 %d) local_unnamed_addr #0 {
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; CHECK-LABEL: select_u_2:
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entry:
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%conv = zext i32 %a to i64
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; CHECK: r{{[0-9]+}} = w{{[0-9]+}}
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; CHECK-NOT: r{{[0-9]+}} <<= 32
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; CHECK-NOT: r{{[0-9]+}} >>= 32
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%cmp = icmp ugt i64 %conv, %b
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%c.d = select i1 %cmp, i64 %c, i64 %d
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ret i64 %c.d
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}
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; Function Attrs: norecurse nounwind readnone
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define dso_local i64 @select_s(i32 %a, i32 %b, i64 %c, i64 %d) local_unnamed_addr #0 {
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; CHECK-LABEL: select_s:
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entry:
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%cmp = icmp sgt i32 %a, %b
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%c.d = select i1 %cmp, i64 %c, i64 %d
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; CHECK: r{{[0-9]+}} <<= 32
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; CHECK-NEXT: r{{[0-9]+}} s>>= 32
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; CHECK: if r{{[0-9]+}} s{{<|>}} r{{[0-9]+}} goto
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ret i64 %c.d
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}
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; Function Attrs: nounwind
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define dso_local i32 @foo(i32 %b, i32 %c) local_unnamed_addr #0 {
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; CHECK-LABEL: foo:
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entry:
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%call = tail call i64 bitcast (i64 (...)* @bar to i64 ()*)() #2
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%conv = trunc i64 %call to i32
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%cmp = icmp ult i32 %conv, 10
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; %call comes from function call returning i64 so the high bits will need
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; to be cleared.
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; CHECK: r{{[0-9]+}} = w{{[0-9]+}}
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; CHECK-NOT: r{{[0-9]+}} <<= 32
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; CHECK-NOT: r{{[0-9]+}} >>= 32
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%b.c = select i1 %cmp, i32 %b, i32 %c
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; CHECK: if r{{[0-9]+}} {{<|>}} {{[0-9]+}} goto
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ret i32 %b.c
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}
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declare dso_local i64 @bar(...) local_unnamed_addr #1
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; Function Attrs: norecurse nounwind readnone
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define dso_local i32* @inc_p(i32* readnone %p, i32 %a) local_unnamed_addr #0 {
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; CHECK-LABEL: inc_p:
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entry:
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%idx.ext = zext i32 %a to i64
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; CHECK: r{{[0-9]+}} = w{{[0-9]+}}
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; CHECK-NOT: r{{[0-9]+}} <<= 32
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; CHECK-NOT: r{{[0-9]+}} >>= 32
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%add.ptr = getelementptr inbounds i32, i32* %p, i64 %idx.ext
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ret i32* %add.ptr
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}
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define dso_local i32 @test() local_unnamed_addr {
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; CHECK-LABEL: test:
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entry:
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%call = tail call i32 bitcast (i32 (...)* @helper to i32 ()*)()
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%cmp = icmp sgt i32 %call, 6
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; The shifts can't be optimized out because %call comes from function call
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; return i32 so the high bits might be invalid.
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; CHECK: r{{[0-9]+}} <<= 32
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; CHECK-NEXT: r{{[0-9]+}} s>>= 32
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%cond = zext i1 %cmp to i32
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; CHECK: if r{{[0-9]+}} s{{<|>}} {{[0-9]+}} goto
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ret i32 %cond
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}
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declare dso_local i32 @helper(...) local_unnamed_addr
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