; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=instcombine < %s | FileCheck %s
declare void @usei32(i32)
; If we have a phi of extractvalues, we can sink it,
; Here, we only need a PHI for extracted values.
define i32 @test0({ i32, i32 } %agg_left, { i32, i32 } %agg_right, i1 %c) {
; CHECK-LABEL: @test0(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: br label [[END:%.*]]
; CHECK: right:
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[AGG_LEFT_PN:%.*]] = phi { i32, i32 } [ [[AGG_LEFT:%.*]], [[LEFT]] ], [ [[AGG_RIGHT:%.*]], [[RIGHT]] ]
; CHECK-NEXT: [[R:%.*]] = extractvalue { i32, i32 } [[AGG_LEFT_PN]], 0
; CHECK-NEXT: ret i32 [[R]]
;
entry:
br i1 %c, label %left, label %right
left:
%i0 = extractvalue { i32, i32 } %agg_left, 0
br label %end
right:
%i1 = extractvalue { i32, i32 } %agg_right, 0
br label %end
end:
%r = phi i32 [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
; But only if the extractvalues have no extra uses
define i32 @test1_extrause0({ i32, i32 } %agg_left, { i32, i32 } %agg_right, i1 %c) {
; CHECK-LABEL: @test1_extrause0(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: [[I0:%.*]] = extractvalue { i32, i32 } [[AGG_LEFT:%.*]], 0
; CHECK-NEXT: call void @usei32(i32 [[I0]])
; CHECK-NEXT: br label [[END:%.*]]
; CHECK: right:
; CHECK-NEXT: [[I1:%.*]] = extractvalue { i32, i32 } [[AGG_RIGHT:%.*]], 0
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[R:%.*]] = phi i32 [ [[I0]], [[LEFT]] ], [ [[I1]], [[RIGHT]] ]
; CHECK-NEXT: ret i32 [[R]]
;
entry:
br i1 %c, label %left, label %right
left:
%i0 = extractvalue { i32, i32 } %agg_left, 0
call void @usei32(i32 %i0)
br label %end
right:
%i1 = extractvalue { i32, i32 } %agg_right, 0
br label %end
end:
%r = phi i32 [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
define i32 @test2_extrause1({ i32, i32 } %agg_left, { i32, i32 } %agg_right, i1 %c) {
; CHECK-LABEL: @test2_extrause1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: [[I0:%.*]] = extractvalue { i32, i32 } [[AGG_LEFT:%.*]], 0
; CHECK-NEXT: br label [[END:%.*]]
; CHECK: right:
; CHECK-NEXT: [[I1:%.*]] = extractvalue { i32, i32 } [[AGG_RIGHT:%.*]], 0
; CHECK-NEXT: call void @usei32(i32 [[I1]])
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[R:%.*]] = phi i32 [ [[I0]], [[LEFT]] ], [ [[I1]], [[RIGHT]] ]
; CHECK-NEXT: ret i32 [[R]]
;
entry:
br i1 %c, label %left, label %right
left:
%i0 = extractvalue { i32, i32 } %agg_left, 0
br label %end
right:
%i1 = extractvalue { i32, i32 } %agg_right, 0
call void @usei32(i32 %i1)
br label %end
end:
%r = phi i32 [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
define i32 @test3_extrause2({ i32, i32 } %agg_left, { i32, i32 } %agg_right, i1 %c) {
; CHECK-LABEL: @test3_extrause2(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: [[I0:%.*]] = extractvalue { i32, i32 } [[AGG_LEFT:%.*]], 0
; CHECK-NEXT: call void @usei32(i32 [[I0]])
; CHECK-NEXT: br label [[END:%.*]]
; CHECK: right:
; CHECK-NEXT: [[I1:%.*]] = extractvalue { i32, i32 } [[AGG_RIGHT:%.*]], 0
; CHECK-NEXT: call void @usei32(i32 [[I1]])
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[R:%.*]] = phi i32 [ [[I0]], [[LEFT]] ], [ [[I1]], [[RIGHT]] ]
; CHECK-NEXT: ret i32 [[R]]
;
entry:
br i1 %c, label %left, label %right
left:
%i0 = extractvalue { i32, i32 } %agg_left, 0
call void @usei32(i32 %i0)
br label %end
right:
%i1 = extractvalue { i32, i32 } %agg_right, 0
call void @usei32(i32 %i1)
br label %end
end:
%r = phi i32 [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
; But the indices must match
define i32 @test4({ i32, i32 } %agg_left, { i32, i32 } %agg_right, i1 %c) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: [[I0:%.*]] = extractvalue { i32, i32 } [[AGG_LEFT:%.*]], 0
; CHECK-NEXT: br label [[END:%.*]]
; CHECK: right:
; CHECK-NEXT: [[I1:%.*]] = extractvalue { i32, i32 } [[AGG_RIGHT:%.*]], 1
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[R:%.*]] = phi i32 [ [[I0]], [[LEFT]] ], [ [[I1]], [[RIGHT]] ]
; CHECK-NEXT: ret i32 [[R]]
;
entry:
br i1 %c, label %left, label %right
left:
%i0 = extractvalue { i32, i32 } %agg_left, 0
br label %end
right:
%i1 = extractvalue { i32, i32 } %agg_right, 1
br label %end
end:
%r = phi i32 [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
; More complex aggregates are fine, too, as long as indices match.
define i32 @test5({{ i32, i32 }, { i32, i32 }} %agg_left, {{ i32, i32 }, { i32, i32 }} %agg_right, i1 %c) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: br label [[END:%.*]]
; CHECK: right:
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[AGG_LEFT_PN:%.*]] = phi { { i32, i32 }, { i32, i32 } } [ [[AGG_LEFT:%.*]], [[LEFT]] ], [ [[AGG_RIGHT:%.*]], [[RIGHT]] ]
; CHECK-NEXT: [[R:%.*]] = extractvalue { { i32, i32 }, { i32, i32 } } [[AGG_LEFT_PN]], 0, 0
; CHECK-NEXT: ret i32 [[R]]
;
entry:
br i1 %c, label %left, label %right
left:
%i0 = extractvalue {{ i32, i32 }, { i32, i32 }} %agg_left, 0, 0
br label %end
right:
%i1 = extractvalue {{ i32, i32 }, { i32, i32 }} %agg_right, 0, 0
br label %end
end:
%r = phi i32 [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
; The indices must fully match, on all levels.
define i32 @test6({{ i32, i32 }, { i32, i32 }} %agg_left, {{ i32, i32 }, { i32, i32 }} %agg_right, i1 %c) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: [[I0:%.*]] = extractvalue { { i32, i32 }, { i32, i32 } } [[AGG_LEFT:%.*]], 0, 0
; CHECK-NEXT: br label [[END:%.*]]
; CHECK: right:
; CHECK-NEXT: [[I1:%.*]] = extractvalue { { i32, i32 }, { i32, i32 } } [[AGG_RIGHT:%.*]], 0, 1
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[R:%.*]] = phi i32 [ [[I0]], [[LEFT]] ], [ [[I1]], [[RIGHT]] ]
; CHECK-NEXT: ret i32 [[R]]
;
entry:
br i1 %c, label %left, label %right
left:
%i0 = extractvalue {{ i32, i32 }, { i32, i32 }} %agg_left, 0, 0
br label %end
right:
%i1 = extractvalue {{ i32, i32 }, { i32, i32 }} %agg_right, 0, 1
br label %end
end:
%r = phi i32 [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
define i32 @test7({{ i32, i32 }, { i32, i32 }} %agg_left, {{ i32, i32 }, { i32, i32 }} %agg_right, i1 %c) {
; CHECK-LABEL: @test7(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: [[I0:%.*]] = extractvalue { { i32, i32 }, { i32, i32 } } [[AGG_LEFT:%.*]], 0, 0
; CHECK-NEXT: br label [[END:%.*]]
; CHECK: right:
; CHECK-NEXT: [[I1:%.*]] = extractvalue { { i32, i32 }, { i32, i32 } } [[AGG_RIGHT:%.*]], 1, 0
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[R:%.*]] = phi i32 [ [[I0]], [[LEFT]] ], [ [[I1]], [[RIGHT]] ]
; CHECK-NEXT: ret i32 [[R]]
;
entry:
br i1 %c, label %left, label %right
left:
%i0 = extractvalue {{ i32, i32 }, { i32, i32 }} %agg_left, 0, 0
br label %end
right:
%i1 = extractvalue {{ i32, i32 }, { i32, i32 }} %agg_right, 1, 0
br label %end
end:
%r = phi i32 [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
define i32 @test8({{ i32, i32 }, { i32, i32 }} %agg_left, {{ i32, i32 }, { i32, i32 }} %agg_right, i1 %c) {
; CHECK-LABEL: @test8(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: [[I0:%.*]] = extractvalue { { i32, i32 }, { i32, i32 } } [[AGG_LEFT:%.*]], 0, 0
; CHECK-NEXT: br label [[END:%.*]]
; CHECK: right:
; CHECK-NEXT: [[I1:%.*]] = extractvalue { { i32, i32 }, { i32, i32 } } [[AGG_RIGHT:%.*]], 1, 1
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[R:%.*]] = phi i32 [ [[I0]], [[LEFT]] ], [ [[I1]], [[RIGHT]] ]
; CHECK-NEXT: ret i32 [[R]]
;
entry:
br i1 %c, label %left, label %right
left:
%i0 = extractvalue {{ i32, i32 }, { i32, i32 }} %agg_left, 0, 0
br label %end
right:
%i1 = extractvalue {{ i32, i32 }, { i32, i32 }} %agg_right, 1, 1
br label %end
end:
%r = phi i32 [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
; Also, unlike PHI-of-insertvalues, here the base aggregates of extractvalue
; can have different types, and just checking the indices is not enough.
define i32 @test9({ i32, i32 } %agg_left, { i32, { i32, i32 } } %agg_right, i1 %c) {
; CHECK-LABEL: @test9(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: [[I0:%.*]] = extractvalue { i32, i32 } [[AGG_LEFT:%.*]], 0
; CHECK-NEXT: br label [[END:%.*]]
; CHECK: right:
; CHECK-NEXT: [[I1:%.*]] = extractvalue { i32, { i32, i32 } } [[AGG_RIGHT:%.*]], 0
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[R:%.*]] = phi i32 [ [[I0]], [[LEFT]] ], [ [[I1]], [[RIGHT]] ]
; CHECK-NEXT: ret i32 [[R]]
;
entry:
br i1 %c, label %left, label %right
left:
%i0 = extractvalue { i32, i32 } %agg_left, 0
br label %end
right:
%i1 = extractvalue { i32, { i32, i32 } } %agg_right, 0
br label %end
end:
%r = phi i32 [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
; It is fine if there are multiple uses of the PHI's value, as long as they are all in the PHI node itself
define i32 @test10({ i32, i32 } %agg_left, { i32, i32 } %agg_right, i1 %c0, i1 %c1) {
; CHECK-LABEL: @test10(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C0:%.*]], label [[END:%.*]], label [[DISPATCH:%.*]]
; CHECK: dispatch:
; CHECK-NEXT: br i1 [[C1:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: br label [[END]]
; CHECK: right:
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[AGG_LEFT_PN:%.*]] = phi { i32, i32 } [ [[AGG_LEFT:%.*]], [[ENTRY:%.*]] ], [ [[AGG_LEFT]], [[LEFT]] ], [ [[AGG_RIGHT:%.*]], [[RIGHT]] ]
; CHECK-NEXT: [[R:%.*]] = extractvalue { i32, i32 } [[AGG_LEFT_PN]], 0
; CHECK-NEXT: ret i32 [[R]]
;
entry:
%i0 = extractvalue { i32, i32 } %agg_left, 0
%i1 = extractvalue { i32, i32 } %agg_right, 0
br i1 %c0, label %end, label %dispatch
dispatch:
br i1 %c1, label %left, label %right
left:
br label %end
right:
br label %end
end:
%r = phi i32 [ %i0, %entry ], [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
; Which isn't the case here, there is a legitimate external use.
define i32 @test11({ i32, i32 } %agg_left, { i32, i32 } %agg_right, i1 %c0, i1 %c1) {
; CHECK-LABEL: @test11(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[I0:%.*]] = extractvalue { i32, i32 } [[AGG_LEFT:%.*]], 0
; CHECK-NEXT: [[I1:%.*]] = extractvalue { i32, i32 } [[AGG_RIGHT:%.*]], 0
; CHECK-NEXT: call void @usei32(i32 [[I0]])
; CHECK-NEXT: br i1 [[C0:%.*]], label [[END:%.*]], label [[DISPATCH:%.*]]
; CHECK: dispatch:
; CHECK-NEXT: br i1 [[C1:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: left:
; CHECK-NEXT: br label [[END]]
; CHECK: right:
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[R:%.*]] = phi i32 [ [[I0]], [[ENTRY:%.*]] ], [ [[I0]], [[LEFT]] ], [ [[I1]], [[RIGHT]] ]
; CHECK-NEXT: ret i32 [[R]]
;
entry:
%i0 = extractvalue { i32, i32 } %agg_left, 0
%i1 = extractvalue { i32, i32 } %agg_right, 0
call void @usei32(i32 %i0)
br i1 %c0, label %end, label %dispatch
dispatch:
br i1 %c1, label %left, label %right
left:
br label %end
right:
br label %end
end:
%r = phi i32 [ %i0, %entry ], [ %i0, %left ], [ %i1, %right ]
ret i32 %r
}
define i32 @extractvalue_of_constant_phi(i1 %c) {
; CHECK-LABEL: @extractvalue_of_constant_phi(
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[ELSE:%.*]]
; CHECK: if:
; CHECK-NEXT: br label [[JOIN:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[JOIN]]
; CHECK: join:
; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ 1, [[IF]] ], [ 3, [[ELSE]] ]
; CHECK-NEXT: ret i32 [[PHI]]
;
br i1 %c, label %if, label %else
if:
br label %join
else:
br label %join
join:
%phi = phi { i32, i32 } [ { i32 1, i32 2 }, %if ], [ { i32 3, i32 4 }, %else ]
%ev = extractvalue { i32, i32 } %phi, 0
ret i32 %ev
}
define i32 @extractvalue_of_one_constant_phi(i1 %c, { i32, i32 } %arg) {
; CHECK-LABEL: @extractvalue_of_one_constant_phi(
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[ELSE:%.*]]
; CHECK: if:
; CHECK-NEXT: [[TMP1:%.*]] = extractvalue { i32, i32 } [[ARG:%.*]], 0
; CHECK-NEXT: br label [[JOIN:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[JOIN]]
; CHECK: join:
; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ [[TMP1]], [[IF]] ], [ 3, [[ELSE]] ]
; CHECK-NEXT: ret i32 [[PHI]]
;
br i1 %c, label %if, label %else
if:
br label %join
else:
br label %join
join:
%phi = phi { i32, i32 } [ %arg, %if ], [ { i32 3, i32 4 }, %else ]
%ev = extractvalue { i32, i32 } %phi, 0
ret i32 %ev
}
define i32 @extractvalue_of_constant_phi_multi_index(i1 %c) {
; CHECK-LABEL: @extractvalue_of_constant_phi_multi_index(
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[ELSE:%.*]]
; CHECK: if:
; CHECK-NEXT: br label [[JOIN:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[JOIN]]
; CHECK: join:
; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ 3, [[IF]] ], [ 6, [[ELSE]] ]
; CHECK-NEXT: ret i32 [[PHI]]
;
br i1 %c, label %if, label %else
if:
br label %join
else:
br label %join
join:
%phi = phi { i32, { i32, i32 } } [ { i32 1, { i32, i32 } { i32 2, i32 3 } }, %if ], [ { i32 4, { i32, i32 } { i32 5, i32 6 } }, %else ]
%ev = extractvalue { i32, { i32, i32 } } %phi, 1, 1
ret i32 %ev
}
define i32 @extractvalue_of_one_constant_phi_multi_index(i1 %c, { i32, { i32, i32 } } %arg) {
; CHECK-LABEL: @extractvalue_of_one_constant_phi_multi_index(
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[ELSE:%.*]]
; CHECK: if:
; CHECK-NEXT: [[TMP1:%.*]] = extractvalue { i32, { i32, i32 } } [[ARG:%.*]], 1, 1
; CHECK-NEXT: br label [[JOIN:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[JOIN]]
; CHECK: join:
; CHECK-NEXT: [[PHI:%.*]] = phi i32 [ [[TMP1]], [[IF]] ], [ 6, [[ELSE]] ]
; CHECK-NEXT: ret i32 [[PHI]]
;
br i1 %c, label %if, label %else
if:
br label %join
else:
br label %join
join:
%phi = phi { i32, { i32, i32 } } [ %arg, %if ], [ { i32 4, { i32, i32 } { i32 5, i32 6 } }, %else ]
%ev = extractvalue { i32, { i32, i32 } } %phi, 1, 1
ret i32 %ev
}
define i32 @extractvalue_of_constant_phi_multiuse(i1 %c) {
; CHECK-LABEL: @extractvalue_of_constant_phi_multiuse(
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[ELSE:%.*]]
; CHECK: if:
; CHECK-NEXT: br label [[JOIN:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[JOIN]]
; CHECK: join:
; CHECK-NEXT: [[PHI:%.*]] = phi { i32, i32 } [ { i32 1, i32 2 }, [[IF]] ], [ { i32 3, i32 4 }, [[ELSE]] ]
; CHECK-NEXT: [[EV0:%.*]] = extractvalue { i32, i32 } [[PHI]], 0
; CHECK-NEXT: [[EV1:%.*]] = extractvalue { i32, i32 } [[PHI]], 1
; CHECK-NEXT: [[ADD:%.*]] = add i32 [[EV0]], [[EV1]]
; CHECK-NEXT: ret i32 [[ADD]]
;
br i1 %c, label %if, label %else
if:
br label %join
else:
br label %join
join:
%phi = phi { i32, i32 } [ { i32 1, i32 2 }, %if ], [ { i32 3, i32 4 }, %else ]
%ev0 = extractvalue { i32, i32 } %phi, 0
%ev1 = extractvalue { i32, i32 } %phi, 1
%add = add i32 %ev0, %ev1
ret i32 %add
}
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