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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; Test function specialization wouldn't crash due to constant expression.
; Note that this test case shows that function specialization pass would
; transform the function even if no specialization happened.
; RUN: opt -passes="ipsccp<func-spec>" -force-function-specialization -S < %s | FileCheck %s
%struct = type { i8, i16, i32, i64, i64}
@Global = internal constant %struct {i8 0, i16 1, i32 2, i64 3, i64 4}
define internal i64 @func2(ptr %x) {
entry:
%val = ptrtoint ptr %x to i64
ret i64 %val
}
define internal i64 @func(ptr %x, ptr %binop) {
; CHECK-LABEL: @func(
; CHECK-NEXT: entry:
; CHECK-NEXT: unreachable
;
entry:
%tmp0 = call i64 %binop(ptr %x)
ret i64 %tmp0
}
define internal i64 @zoo(i1 %flag) {
; CHECK-LABEL: @zoo(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[FLAG:%.*]], label [[PLUS:%.*]], label [[MINUS:%.*]]
; CHECK: plus:
; CHECK-NEXT: [[TMP0:%.*]] = call i64 @func2.2(ptr getelementptr inbounds ([[STRUCT:%.*]], ptr @Global, i32 0, i32 3))
; CHECK-NEXT: br label [[MERGE:%.*]]
; CHECK: minus:
; CHECK-NEXT: [[TMP1:%.*]] = call i64 @func2.1(ptr getelementptr inbounds ([[STRUCT]], ptr @Global, i32 0, i32 4))
; CHECK-NEXT: br label [[MERGE]]
; CHECK: merge:
; CHECK-NEXT: [[TMP2:%.*]] = phi i64 [ [[TMP0]], [[PLUS]] ], [ [[TMP1]], [[MINUS]] ]
; CHECK-NEXT: ret i64 [[TMP2]]
;
entry:
br i1 %flag, label %plus, label %minus
plus:
%arg = getelementptr %struct, ptr @Global, i32 0, i32 3
%tmp0 = call i64 @func2(ptr %arg)
br label %merge
minus:
%arg2 = getelementptr %struct, ptr @Global, i32 0, i32 4
%tmp1 = call i64 @func2(ptr %arg2)
br label %merge
merge:
%tmp2 = phi i64 [ %tmp0, %plus ], [ %tmp1, %minus]
ret i64 %tmp2
}
define i64 @main() {
; CHECK-LABEL: @main(
; CHECK-NEXT: [[TMP1:%.*]] = call i64 @zoo(i1 false)
; CHECK-NEXT: [[TMP2:%.*]] = call i64 @zoo(i1 true)
; CHECK-NEXT: [[TMP3:%.*]] = add i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT: ret i64 [[TMP3]]
;
%1 = call i64 @zoo(i1 0)
%2 = call i64 @zoo(i1 1)
%3 = add i64 %1, %2
ret i64 %3
}
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