xref: /llvm-project/llvm/test/Transforms/ArgumentPromotion/dead-gep-no-promotion.ll (revision bcbc6151640f53e9d78392c66de9760c664d8b1d)
129d2ae59SValery Pykhtin; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
23f8027fbSBjorn Pettersson; RUN: opt -passes=argpromotion -S %s | FileCheck %s
3e0905553SFlorian Hahn
4*bcbc6151SNikita Popov@glob = external global ptr
5e0905553SFlorian Hahn
6e0905553SFlorian Hahn; No arguments in @callee can be promoted, but it contains a dead GEP. Make
7e0905553SFlorian Hahn; sure it is not removed, as we do not perform any promotion.
8*bcbc6151SNikita Popovdefine i32 @caller(ptr %ptr) {
929d2ae59SValery Pykhtin; CHECK-LABEL: define {{[^@]+}}@caller
10*bcbc6151SNikita Popov; CHECK-SAME: (ptr [[PTR:%.*]]) {
11*bcbc6151SNikita Popov; CHECK-NEXT:    call void @callee(ptr [[PTR]], ptr [[PTR]], ptr [[PTR]])
12e0905553SFlorian Hahn; CHECK-NEXT:    ret i32 0
13e0905553SFlorian Hahn;
14*bcbc6151SNikita Popov  call void @callee(ptr %ptr, ptr %ptr, ptr %ptr)
15e0905553SFlorian Hahn  ret i32 0
16e0905553SFlorian Hahn}
17e0905553SFlorian Hahn
18*bcbc6151SNikita Popovdefine internal void @callee(ptr %arg, ptr %arg1, ptr %arg2) {
1929d2ae59SValery Pykhtin; CHECK-LABEL: define {{[^@]+}}@callee
20*bcbc6151SNikita Popov; CHECK-SAME: (ptr [[ARG:%.*]], ptr [[ARG1:%.*]], ptr [[ARG2:%.*]]) {
21*bcbc6151SNikita Popov; CHECK-NEXT:    call void @external_fn(ptr [[ARG]], ptr [[ARG1]])
22*bcbc6151SNikita Popov; CHECK-NEXT:    [[DEAD_GEP:%.*]] = getelementptr inbounds i32, ptr [[ARG1]], i32 17
23*bcbc6151SNikita Popov; CHECK-NEXT:    store ptr [[ARG2]], ptr @glob, align 8
24e0905553SFlorian Hahn; CHECK-NEXT:    ret void
25e0905553SFlorian Hahn;
26*bcbc6151SNikita Popov  call void @external_fn(ptr %arg, ptr %arg1)
27*bcbc6151SNikita Popov  %dead.gep = getelementptr inbounds i32, ptr %arg1, i32 17
28*bcbc6151SNikita Popov  store ptr %arg2, ptr @glob, align 8
29e0905553SFlorian Hahn  ret  void
30e0905553SFlorian Hahn}
31e0905553SFlorian Hahn
32*bcbc6151SNikita Popovdeclare void @external_fn(ptr, ptr)
33