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|
; RUN: opt < %s -passes='print<phi-values>' -disable-output 2>&1 | FileCheck %s
@X = common global i32 0
; CHECK-LABEL: PHI Values for function: simple
define void @simple(i32* %ptr) {
entry:
br i1 undef, label %if, label %else
if:
br label %end
else:
br label %end
end:
; CHECK: PHI %phi1 has values:
; CHECK-DAG: i32 0
; CHECK-DAG: i32 1
%phi1 = phi i32 [ 0, %if ], [ 1, %else ]
; CHECK: PHI %phi2 has values:
; CHECK-DAG: @X
; CHECK-DAG: %ptr
%phi2 = phi i32* [ @X, %if ], [ %ptr, %else ]
ret void
}
; CHECK-LABEL: PHI Values for function: chain
define void @chain() {
entry:
br i1 undef, label %if1, label %else1
if1:
br label %middle
else1:
br label %middle
middle:
; CHECK: PHI %phi1 has values:
; CHECK-DAG: i32 0
; CHECK-DAG: i32 1
%phi1 = phi i32 [ 0, %if1 ], [ 1, %else1 ]
br i1 undef, label %if2, label %else2
if2:
br label %end
else2:
br label %end
end:
; CHECK: PHI %phi2 has values:
; CHECK-DAG: i32 0
; CHECK-DAG: i32 1
; CHECK-DAG: i32 2
%phi2 = phi i32 [ %phi1, %if2 ], [ 2, %else2 ]
ret void
}
; CHECK-LABEL: PHI Values for function: no_values
define void @no_values() {
entry:
ret void
unreachable:
; CHECK: PHI %phi has values:
; CHECK-DAG: NONE
%phi = phi i32 [ %phi, %unreachable ]
br label %unreachable
}
; CHECK-LABEL: PHI Values for function: simple_loop
define void @simple_loop() {
entry:
br label %loop
loop:
; CHECK: PHI %phi has values:
; CHECK-DAG: i32 0
%phi = phi i32 [ 0, %entry ], [ %phi, %loop ]
br i1 undef, label %loop, label %end
end:
ret void
}
; CHECK-LABEL: PHI Values for function: complex_loop
define void @complex_loop() {
entry:
br i1 undef, label %loop, label %end
loop:
; CHECK: PHI %phi1 has values:
; CHECK-DAG: i32 0
; CHECK-DAG: i32 1
%phi1 = phi i32 [ 0, %entry ], [ %phi2, %then ]
br i1 undef, label %if, label %else
if:
br label %then
else:
br label %then
then:
; CHECK: PHI %phi2 has values:
; CHECK-DAG: i32 0
; CHECK-DAG: i32 1
%phi2 = phi i32 [ %phi1, %if ], [ 1, %else ]
br i1 undef, label %loop, label %end
end:
; CHECK: PHI %phi3 has values:
; CHECK-DAG: i32 0
; CHECK-DAG: i32 1
; CHECK-DAG: i32 2
%phi3 = phi i32 [ 2, %entry ], [ %phi2, %then ]
ret void
}
; CHECK-LABEL: PHI Values for function: strange_loop
define void @strange_loop() {
entry:
br i1 undef, label %ifelse, label %inloop
loop:
; CHECK: PHI %phi1 has values:
; CHECK-DAG: i32 0
; CHECK-DAG: i32 1
; CHECK-DAG: i32 2
; CHECK-DAG: i32 3
%phi1 = phi i32 [ %phi3, %if ], [ 0, %else ], [ %phi2, %inloop ]
br i1 undef, label %inloop, label %end
inloop:
; CHECK: PHI %phi2 has values:
; CHECK-DAG: i32 0
; CHECK-DAG: i32 1
; CHECK-DAG: i32 2
; CHECK-DAG: i32 3
%phi2 = phi i32 [ %phi1, %loop ], [ 1, %entry ]
br i1 undef, label %ifelse, label %loop
ifelse:
; CHECK: PHI %phi3 has values:
; CHECK-DAG: i32 2
; CHECK-DAG: i32 3
%phi3 = phi i32 [ 2, %entry ], [ 3, %inloop ]
br i1 undef, label %if, label %else
if:
br label %loop
else:
br label %loop
end:
ret void
}
; CHECK-LABEL: PHI Values for function: mutual_loops
define void @mutual_loops() {
entry:
br i1 undef, label %loop1, label %loop2
loop1:
; CHECK: PHI %phi1 has values:
; CHECK-DAG: 0
; CHECK-DAG: 1
; CHECK-DAG: 2
; CHECK-DAG: 3
; CHECK-DAG: 4
%phi1 = phi i32 [ 0, %entry ], [ %phi2, %loop1.then ], [ %phi3, %loop2.if ]
br i1 undef, label %loop1.if, label %loop1.else
loop1.if:
br i1 undef, label %loop1.then, label %loop2
loop1.else:
br label %loop1.then
loop1.then:
; CHECK: PHI %phi2 has values:
; CHECK-DAG: 0
; CHECK-DAG: 1
; CHECK-DAG: 2
; CHECK-DAG: 3
; CHECK-DAG: 4
%phi2 = phi i32 [ 1, %loop1.if ], [ %phi1, %loop1.else ]
br i1 undef, label %loop1, label %end
loop2:
; CHECK: PHI %phi3 has values:
; CHECK-DAG: 2
; CHECK-DAG: 3
; CHECK-DAG: 4
%phi3 = phi i32 [ 2, %entry ], [ %phi4, %loop2.then ], [ 3, %loop1.if ]
br i1 undef, label %loop2.if, label %loop2.else
loop2.if:
br i1 undef, label %loop2.then, label %loop1
loop2.else:
br label %loop2.then
loop2.then:
; CHECK: PHI %phi4 has values:
; CHECK-DAG: 2
; CHECK-DAG: 3
; CHECK-DAG: 4
%phi4 = phi i32 [ 4, %loop2.if ], [ %phi3, %loop2.else ]
br i1 undef, label %loop2, label %end
end:
; CHECK: PHI %phi5 has values:
; CHECK-DAG: 0
; CHECK-DAG: 1
; CHECK-DAG: 2
; CHECK-DAG: 3
; CHECK-DAG: 4
%phi5 = phi i32 [ %phi2, %loop1.then ], [ %phi4, %loop2.then ]
ret void
}
; CHECK-LABEL: PHI Values for function: nested_loops_several_values
define void @nested_loops_several_values() {
entry:
br label %loop1
loop1:
; CHECK: PHI %phi1 has values:
; CHECK-DAG: i32 0
; CHECK-DAG: %add
%phi1 = phi i32 [ 0, %entry ], [ %phi2, %loop2 ]
br i1 undef, label %loop2, label %end
loop2:
; CHECK: PHI %phi2 has values:
; CHECK-DAG: i32 0
; CHECK-DAG: %add
%phi2 = phi i32 [ %phi1, %loop1 ], [ %phi3, %loop3 ]
br i1 undef, label %loop3, label %loop1
loop3:
; CHECK: PHI %phi3 has values:
; CHECK-DAG: i32 0
; CHECK-DAG: %add
%phi3 = phi i32 [ %add, %loop3 ], [ %phi2, %loop2 ]
%add = add i32 %phi3, 1
br i1 undef, label %loop3, label %loop2
end:
ret void
}
; CHECK-LABEL: PHI Values for function: nested_loops_one_value
define void @nested_loops_one_value() {
entry:
br label %loop1
loop1:
; CHECK: PHI %phi1 has values:
; CHECK-DAG: i32 0
%phi1 = phi i32 [ 0, %entry ], [ %phi2, %loop2 ]
br i1 undef, label %loop2, label %end
loop2:
; CHECK: PHI %phi2 has values:
; CHECK-DAG: i32 0
%phi2 = phi i32 [ %phi1, %loop1 ], [ %phi3, %loop3 ]
br i1 undef, label %loop3, label %loop1
loop3:
; CHECK: PHI %phi3 has values:
; CHECK-DAG: i32 0
%phi3 = phi i32 [ 0, %loop3 ], [ %phi2, %loop2 ]
br i1 undef, label %loop3, label %loop2
end:
ret void
}
|
