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