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TheRock/compiler/amd-llvm/llvm/test/Transforms/InstCombine/nonnull-select.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
; Passing select(cond, null, v) as nonnull should be optimized to passing v
define nonnull ptr @pr48975(ptr %.0) {
; CHECK-LABEL: @pr48975(
; CHECK-NEXT: ret ptr [[DOT4:%.*]]
;
%.1 = load ptr, ptr %.0, align 8
%.2 = icmp eq ptr %.1, null
%.4 = select i1 %.2, ptr null, ptr %.0
ret ptr %.4
}
define nonnull ptr @nonnull_ret(i1 %cond, ptr %p) {
; CHECK-LABEL: @nonnull_ret(
; CHECK-NEXT: ret ptr [[RES:%.*]]
;
%res = select i1 %cond, ptr %p, ptr null
ret ptr %res
}
define nonnull ptr @nonnull_ret2(i1 %cond, ptr %p) {
; CHECK-LABEL: @nonnull_ret2(
; CHECK-NEXT: ret ptr [[RES:%.*]]
;
%res = select i1 %cond, ptr null, ptr %p
ret ptr %res
}
define nonnull noundef ptr @nonnull_noundef_ret(i1 %cond, ptr %p) {
; CHECK-LABEL: @nonnull_noundef_ret(
; CHECK-NEXT: ret ptr [[RES:%.*]]
;
%res = select i1 %cond, ptr %p, ptr null
ret ptr %res
}
define nonnull noundef ptr @nonnull_noundef_ret2(i1 %cond, ptr %p) {
; CHECK-LABEL: @nonnull_noundef_ret2(
; CHECK-NEXT: ret ptr [[RES:%.*]]
;
%res = select i1 %cond, ptr null, ptr %p
ret ptr %res
}
define void @nonnull_call(i1 %cond, ptr %p) {
; CHECK-LABEL: @nonnull_call(
; CHECK-NEXT: call void @f(ptr nonnull [[RES:%.*]])
; CHECK-NEXT: ret void
;
%res = select i1 %cond, ptr %p, ptr null
call void @f(ptr nonnull %res)
ret void
}
define void @nonnull_call2(i1 %cond, ptr %p) {
; CHECK-LABEL: @nonnull_call2(
; CHECK-NEXT: call void @f(ptr nonnull [[RES:%.*]])
; CHECK-NEXT: ret void
;
%res = select i1 %cond, ptr null, ptr %p
call void @f(ptr nonnull %res)
ret void
}
define void @nonnull_noundef_call(i1 %cond, ptr %p) {
; CHECK-LABEL: @nonnull_noundef_call(
; CHECK-NEXT: call void @f(ptr noundef nonnull [[RES:%.*]])
; CHECK-NEXT: ret void
;
%res = select i1 %cond, ptr %p, ptr null
call void @f(ptr nonnull noundef %res)
ret void
}
define void @nonnull_noundef_call2(i1 %cond, ptr %p) {
; CHECK-LABEL: @nonnull_noundef_call2(
; CHECK-NEXT: call void @f(ptr noundef nonnull [[RES:%.*]])
; CHECK-NEXT: ret void
;
%res = select i1 %cond, ptr null, ptr %p
call void @f(ptr nonnull noundef %res)
ret void
}
define void @nonnull_call_gep(i1 %cond, ptr %p, i64 %off) {
; CHECK-LABEL: @nonnull_call_gep(
; CHECK-NEXT: [[PTR:%.*]] = select i1 [[COND:%.*]], ptr null, ptr [[P:%.*]]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[PTR]], i64 [[OFF:%.*]]
; CHECK-NEXT: call void @f(ptr nonnull [[GEP]])
; CHECK-NEXT: ret void
;
%ptr = select i1 %cond, ptr null, ptr %p
%gep = getelementptr i8, ptr %ptr, i64 %off
call void @f(ptr nonnull %gep)
ret void
}
define void @nonnull_call_gep_multiuse(i1 %cond, ptr %p, i64 %off) {
; CHECK-LABEL: @nonnull_call_gep_multiuse(
; CHECK-NEXT: [[PTR:%.*]] = select i1 [[COND:%.*]], ptr null, ptr [[P:%.*]]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR]], i64 [[OFF:%.*]]
; CHECK-NEXT: call void @f(ptr nonnull [[GEP]])
; CHECK-NEXT: call void @f(ptr [[GEP]])
; CHECK-NEXT: ret void
;
%ptr = select i1 %cond, ptr null, ptr %p
%gep = getelementptr inbounds i8, ptr %ptr, i64 %off
call void @f(ptr nonnull %gep)
call void @f(ptr %gep)
ret void
}
define void @all_nonnull_call_gep_multiuse(i1 %cond, ptr %p, i64 %off) {
; CHECK-LABEL: @all_nonnull_call_gep_multiuse(
; CHECK-NEXT: [[PTR:%.*]] = select i1 [[COND:%.*]], ptr null, ptr [[P:%.*]]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR]], i64 [[OFF:%.*]]
; CHECK-NEXT: call void @f(ptr nonnull [[GEP]])
; CHECK-NEXT: call void @f(ptr nonnull [[GEP]])
; CHECK-NEXT: ret void
;
%ptr = select i1 %cond, ptr null, ptr %p
%gep = getelementptr inbounds i8, ptr %ptr, i64 %off
call void @f(ptr nonnull %gep)
call void @f(ptr nonnull %gep)
ret void
}
define void @nonnull_call_gep_inbounds(i1 %cond, ptr %p, i64 %off) {
; CHECK-LABEL: @nonnull_call_gep_inbounds(
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[OFF:%.*]]
; CHECK-NEXT: call void @f(ptr nonnull [[GEP]])
; CHECK-NEXT: ret void
;
%ptr = select i1 %cond, ptr null, ptr %p
%gep = getelementptr inbounds i8, ptr %ptr, i64 %off
call void @f(ptr nonnull %gep)
ret void
}
define void @nonnull_dereferenceable_call_gep(i1 %cond, ptr %p, i64 %off) {
; CHECK-LABEL: @nonnull_dereferenceable_call_gep(
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[PTR:%.*]], i64 [[OFF:%.*]]
; CHECK-NEXT: call void @f(ptr dereferenceable(1) [[GEP]])
; CHECK-NEXT: ret void
;
%ptr = select i1 %cond, ptr null, ptr %p
%gep = getelementptr i8, ptr %ptr, i64 %off
call void @f(ptr dereferenceable(1) %gep)
ret void
}
define nonnull ptr @nonnull_ret_gep(i1 %cond, ptr %p, i64 %off) {
; CHECK-LABEL: @nonnull_ret_gep(
; CHECK-NEXT: [[PTR:%.*]] = select i1 [[COND:%.*]], ptr null, ptr [[P:%.*]]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[PTR]], i64 [[OFF:%.*]]
; CHECK-NEXT: ret ptr [[GEP]]
;
%ptr = select i1 %cond, ptr null, ptr %p
%gep = getelementptr i8, ptr %ptr, i64 %off
ret ptr %gep
}
define nonnull ptr @nonnull_ret_gep_inbounds(i1 %cond, ptr %p, i64 %off) {
; CHECK-LABEL: @nonnull_ret_gep_inbounds(
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[PTR:%.*]], i64 [[OFF:%.*]]
; CHECK-NEXT: ret ptr [[GEP]]
;
%ptr = select i1 %cond, ptr null, ptr %p
%gep = getelementptr inbounds i8, ptr %ptr, i64 %off
ret ptr %gep
}
define dereferenceable(1) ptr @nonnull_dereferenceable_ret_gep(i1 %cond, ptr %p, i64 %off) {
; CHECK-LABEL: @nonnull_dereferenceable_ret_gep(
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[PTR:%.*]], i64 [[OFF:%.*]]
; CHECK-NEXT: ret ptr [[GEP]]
;
%ptr = select i1 %cond, ptr null, ptr %p
%gep = getelementptr i8, ptr %ptr, i64 %off
ret ptr %gep
}
declare void @f(ptr)
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