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|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=ipsccp -S %s | FileCheck %s
; Test 1.
; Both arguments and return value of @callee can be tracked. The inferred range
; can be added to call sites.
define internal i32 @callee(i32 %x) {
; CHECK-LABEL: @callee(
; CHECK-NEXT: ret i32 [[X:%.*]]
;
ret i32 %x
}
define i32 @caller1() {
; CHECK-LABEL: @caller1(
; CHECK-NEXT: [[C1:%.*]] = call i32 @callee(i32 10), !range [[RNG0:![0-9]+]]
; CHECK-NEXT: [[C2:%.*]] = call i32 @callee(i32 20), !range [[RNG0]]
; CHECK-NEXT: [[A:%.*]] = add nuw nsw i32 [[C1]], [[C2]]
; CHECK-NEXT: ret i32 [[A]]
;
%c1 = call i32 @callee(i32 10)
%c2 = call i32 @callee(i32 20)
%a = add i32 %c1, %c2
ret i32 %a
}
define i32 @caller2(i32 %x) {
; CHECK-LABEL: @caller2(
; CHECK-NEXT: [[X_15:%.*]] = and i32 [[X:%.*]], 15
; CHECK-NEXT: [[C:%.*]] = call i32 @callee(i32 [[X_15]]), !range [[RNG0]]
; CHECK-NEXT: ret i32 [[C]]
;
%x.15 = and i32 %x, 15
%c = call i32 @callee(i32 %x.15)
ret i32 %c
}
; Test 2.
; The return value of @callee2 can be tracked, but arguments cannot, because
; it is passed to @use_cb1. We cannot infer a range for the return value, no
; metadata should be added.
declare void @use_cb1(ptr)
define internal i32 @callee2(i32 %x) {
; CHECK-LABEL: @callee2(
; CHECK-NEXT: ret i32 [[X:%.*]]
;
ret i32 %x
}
define void @caller_cb1() {
; CHECK-LABEL: @caller_cb1(
; CHECK-NEXT: [[C1:%.*]] = call i32 @callee2(i32 9)
; CHECK-NEXT: [[C2:%.*]] = call i32 @callee2(i32 10)
; CHECK-NEXT: call void @use_cb1(ptr @callee2)
; CHECK-NEXT: ret void
;
%c1 = call i32 @callee2(i32 9)
%c2 = call i32 @callee2(i32 10)
call void @use_cb1(ptr @callee2)
ret void
}
; Test 3.
; The return value can be tracked and it the result range ([500, 601) does not
; depend on the arguments, which cannot be tracked because @callee3 is passed
; to @use_cb2. The result range can be added to the call sites of @callee.
declare void @use_cb2(ptr)
define internal i32 @callee3(i32 %x) {
; CHECK-LABEL: @callee3(
; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], 10
; CHECK-NEXT: [[S:%.*]] = select i1 [[C]], i32 500, i32 600
; CHECK-NEXT: ret i32 [[S]]
;
%c = icmp eq i32 %x, 10
%s = select i1 %c, i32 500, i32 600
ret i32 %s
}
define void @caller_cb2() {
; CHECK-LABEL: @caller_cb2(
; CHECK-NEXT: [[C1:%.*]] = call i32 @callee3(i32 9), !range [[RNG1:![0-9]+]]
; CHECK-NEXT: [[C2:%.*]] = call i32 @callee3(i32 10), !range [[RNG1]]
; CHECK-NEXT: call void @use_cb2(ptr @callee3)
; CHECK-NEXT: ret void
;
%c1 = call i32 @callee3(i32 9)
%c2 = call i32 @callee3(i32 10)
call void @use_cb2(ptr @callee3)
ret void
}
; Test 4.
; The return value of @callee4 can be tracked, but depends on an argument which
; cannot be tracked. No result range can be inferred.
declare void @use_cb3(ptr)
define internal i32 @callee4(i32 %x, i32 %y) {
; CHECK-LABEL: @callee4(
; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[X:%.*]], 10
; CHECK-NEXT: [[S:%.*]] = select i1 [[C]], i32 500, i32 [[Y:%.*]]
; CHECK-NEXT: ret i32 [[S]]
;
%c = icmp eq i32 %x, 10
%s = select i1 %c, i32 500, i32 %y
ret i32 %s
}
define void @caller_cb3() {
; CHECK-LABEL: @caller_cb3(
; CHECK-NEXT: [[C1:%.*]] = call i32 @callee4(i32 11, i32 30)
; CHECK-NOT: !range
; CHECK-NEXT: [[C2:%.*]] = call i32 @callee4(i32 12, i32 40)
; CHECK-NOT: !range
; CHECK-NEXT: call void @use_cb3(ptr @callee4)
; CHECK-NEXT: ret void
;
%c1 = call i32 @callee4(i32 11, i32 30)
%c2 = call i32 @callee4(i32 12, i32 40)
call void @use_cb3(ptr @callee4)
ret void
}
; Test 5.
; Range for the return value of callee5 includes undef. No range metadata
; should be added at call sites.
define internal i32 @callee5(i32 %x, i32 %y) {
; CHECK-LABEL: @callee5(
; CHECK-NEXT: [[C:%.*]] = icmp slt i32 [[X:%.*]], 15
; CHECK-NEXT: br i1 [[C]], label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = phi i32 [ [[Y:%.*]], [[BB1]] ], [ undef, [[BB2]] ]
; CHECK-NEXT: ret i32 [[RES]]
;
%c = icmp slt i32 %x, 15
br i1 %c, label %bb1, label %bb2
bb1:
br label %exit
bb2:
br label %exit
exit:
%res = phi i32 [ %y, %bb1 ], [ undef, %bb2]
ret i32 %res
}
define i32 @caller5() {
; CHECK-LABEL: @caller5(
; CHECK-NEXT: [[C1:%.*]] = call i32 @callee5(i32 10, i32 100)
; CHECK-NOT: !range
; CHECK-NEXT: [[C2:%.*]] = call i32 @callee5(i32 20, i32 200)
; CHECK-NOT: !range
; CHECK-NEXT: [[A:%.*]] = add i32 [[C1]], [[C2]]
; CHECK-NEXT: ret i32 [[A]]
;
%c1 = call i32 @callee5(i32 10, i32 100)
%c2 = call i32 @callee5(i32 20, i32 200)
%a = add i32 %c1, %c2
ret i32 %a
}
define internal <2 x i64> @ctlz(<2 x i64> %arg) {
; CHECK-LABEL: @ctlz(
; CHECK-NEXT: [[RES:%.*]] = call <2 x i64> @llvm.ctlz.v2i64(<2 x i64> [[ARG:%.*]], i1 false)
; CHECK-NEXT: ret <2 x i64> [[RES]]
;
%res = call <2 x i64> @llvm.ctlz.v2i64(<2 x i64> %arg, i1 false)
ret <2 x i64> %res
}
define <2 x i64> @ctlz_caller(<2 x i64> %arg) {
; CHECK-LABEL: @ctlz_caller(
; CHECK-NEXT: [[RES:%.*]] = call <2 x i64> @ctlz(<2 x i64> [[ARG:%.*]]), !range [[RNG2:![0-9]+]]
; CHECK-NEXT: ret <2 x i64> [[RES]]
;
%res = call <2 x i64> @ctlz(<2 x i64> %arg)
ret <2 x i64> %res
}
declare <2 x i64> @llvm.ctlz.v2i64(<2 x i64>, i1)
; CHECK: [[RNG0]] = !{i32 0, i32 21}
; CHECK: [[RNG1]] = !{i32 500, i32 601}
; CHECK: [[RNG2]] = !{i64 0, i64 65}
|
