; RUN: llvm-reduce --abort-on-invalid-reduction --delta-passes=ifuncs --test FileCheck --test-arg --check-prefixes=CHECK-INTERESTINGNESS --test-arg %s --test-arg --input-file %s -o %t ; RUN: FileCheck --check-prefixes=CHECK-FINAL --input-file=%t %s ; CHECK-FINAL: @initialized_with_ifunc = global ptr @ifunc_constant_initializer_user @initialized_with_ifunc = global ptr @ifunc_constant_initializer_user ; CHECK-FINAL: [[TABLE:@[0-9]+]] = internal global [[[TABLE_SIZE:[0-9]+]] x ptr] poison ; CHECK-FINAL: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 10, ptr @1, ptr null }] ; CHECK-INTERESTINGNESS: @ifunc_kept1 = ifunc ; CHECK-FINAL: @ifunc_kept1 = ifunc void (), ptr @resolver1 @ifunc_kept1 = ifunc void (), ptr @resolver1 @ifunc_removed2 = ifunc void (), ptr @resolver1 ; CHECK-INTERESTINGNESS: @ifunc_kept3 = ; CHECK-FINAL: @ifunc_kept3 = ifunc i32 (double), ptr @resolver2 @ifunc_kept3 = ifunc i32 (double), ptr @resolver2 ; Remove one with no users @ifunc4_removed = ifunc float (i64), ptr @resolver2 ; Keep one with no users ; CHECK-INTERESTINGNESS: @ifunc5_kept = ifunc @ifunc5_kept = ifunc float (i64), ptr @resolver2 ; Make sure the hidden is preserved ; CHECK-INTERESTINGNESS: @ifunc_kept_hidden = ; CHECK-FINAL: @ifunc_kept_hidden = hidden ifunc i32 (double), ptr @resolver3 @ifunc_kept_hidden = hidden ifunc i32 (double), ptr @resolver3 @ifunc7 = ifunc float (i64), ptr @resolver3 @ifunc_ptr_arg = ifunc void (ptr), ptr @resolver4 ; CHECK-INTERESTINGNESS: @ifunc_nonvoid_kept0 = ifunc @ifunc_nonvoid_kept0 = ifunc i32 (double), ptr @resolver5 @ifunc_nonvoid_removed0 = ifunc i32 (double), ptr @resolver5 ; CHECK-INTERESTINGNESS: @ifunc_nonvoid_kept1 = ifunc @ifunc_nonvoid_kept1 = ifunc i32 (double), ptr @resolver5 @ifunc_nonvoid_removed1 = ifunc i32 (double), ptr @resolver5 ; CHECK-FINAL: @ifunc_constant_initializer_user = ifunc i32 (double), ptr @resolver5 @ifunc_constant_initializer_user = ifunc i32 (double), ptr @resolver5 define ptr @resolver1() { ret ptr inttoptr (i64 123 to ptr) } define ptr @resolver2() { ret ptr inttoptr (i64 456 to ptr) } define ptr @resolver3() { ret ptr inttoptr (i64 789 to ptr) } define ptr @resolver4() { ret ptr inttoptr (i64 999 to ptr) } define ptr @resolver5() { ret ptr inttoptr (i64 420 to ptr) } define void @call_ifunc_kept1() { ; CHECK-FINAL-LABEL: define void @call_ifunc_kept1() { ; CHECK-FINAL-NEXT: call void @ifunc_kept1() ; CHECK-FINAL-NEXT: ret void call void @ifunc_kept1() ret void } ; Test call to removed ifunc define void @call_ifunc_removed(ptr %ptr) { ; CHECK-FINAL-LABEL: define void @call_ifunc_removed(ptr %ptr) ; CHECK-FINAL-NEXT: %1 = load ptr, ptr @0, align 8 ; CHECK-FINAL-NEXT: call void %1() ; CHECK-FINAL-NEXT: ret void call void @ifunc_removed2() ret void } ; Test value use of removed ifunc define void @store_ifunc_removed2(ptr %ptr) { ; CHECK-FINAL-LABEL: define void @store_ifunc_removed2(ptr %ptr) { ; CHECK-FINAL-NEXT: %1 = load ptr, ptr [[TABLE]], align 8 ; CHECK-FINAL-NEXT: store ptr %1, ptr %ptr, align 8 ; CHECK-FINAL-NEXT: %2 = load ptr, ptr @0, align 8 ; CHECK-FINAL-NEXT: store ptr %ptr, ptr %2, align 8 ; CHECK-FINAL-NEXT: ret void store ptr @ifunc_removed2, ptr %ptr store ptr %ptr, ptr @ifunc_removed2 ret void } declare void @other_func(ptr) ; Check a call user, but not as the call operand define void @call_ifunc_removed_is_argument(ptr %ptr) { ; CHECK-FINAL-LABEL: define void @call_ifunc_removed_is_argument(ptr %ptr) { ; CHECK-FINAL-NEXT: %1 = load ptr, ptr [[TABLE]], align 8 ; CHECK-FINAL-NEXT: call void @other_func(ptr %1) ; CHECK-FINAL-NEXT: ret void call void @other_func(ptr @ifunc_removed2) ret void } ; Check a call user calling the ifunc, and using the ifunc as an argument define void @call_ifunc_removed_both_call_argument(ptr %ptr) { ; CHECK-FINAL-LABEL: define void @call_ifunc_removed_both_call_argument( ; CHECK-FINAL-NEXT: %1 = load ptr, ptr getelementptr inbounds ([[[TABLE_SIZE]] x ptr], ptr [[TABLE]], i32 0, i32 3), align 8 ; CHECK-FINAL-NEXT: %2 = load ptr, ptr getelementptr inbounds ([[[TABLE_SIZE]] x ptr], ptr [[TABLE]], i32 0, i32 3), align 8 ; CHECK-FINAL-NEXT: call void %1(ptr %1) ; CHECK-FINAL-NEXT: ret void call void @ifunc_ptr_arg(ptr @ifunc_ptr_arg) ret void } define i32 @call_ifunc_nonvoid(double %arg) { ; CHECK-FINAL-LABEL: define i32 @call_ifunc_nonvoid(double %arg) { ; CHECK-FINAL-NEXT: %ret0 = call i32 @ifunc_nonvoid_kept0(double %arg) ; CHECK-FINAL-NEXT: %1 = load ptr, ptr getelementptr inbounds ([[[TABLE_SIZE]] x ptr], ptr [[TABLE]], i32 0, i32 4), align 8 ; CHECK-FINAL-NEXT: %ret1 = call i32 %1(double %arg) ; CHECK-FINAL-NEXT: %add = add i32 %ret0, %ret1 ; CHECK-FINAL-NEXT: ret i32 %add %ret0 = call i32 @ifunc_nonvoid_kept0(double %arg) %ret1 = call i32 @ifunc_nonvoid_removed0(double %arg) %add = add i32 %ret0, %ret1 ret i32 %add } ; Use site is different than ifunc function type define float @call_different_type_ifunc_nonvoid(double %arg) { ; CHECK-FINAL-LABEL: define float @call_different_type_ifunc_nonvoid(double %arg) { ; CHECK-FINAL-NEXT: %cast.arg = bitcast double %arg to i64 ; CHECK-FINAL-NEXT: %ret0 = call float @ifunc_nonvoid_kept0(i64 %cast.arg) ; CHECK-FINAL-NEXT: %1 = load ptr, ptr getelementptr inbounds ([[[TABLE_SIZE]] x ptr], ptr [[TABLE]], i32 0, i32 4), align 8 ; CHECK-FINAL-NEXT: %ret1 = call float %1(i64 %cast.arg) ; CHECK-FINAL-NEXT: %fadd = fadd float %ret0, %ret1 ; CHECK-FINAL-NEXT: ret float %fadd %cast.arg = bitcast double %arg to i64 %ret0 = call float(i64) @ifunc_nonvoid_kept0(i64 %cast.arg) %ret1 = call float(i64) @ifunc_nonvoid_removed0(i64 %cast.arg) %fadd = fadd float %ret0, %ret1 ret float %fadd } ; FIXME: Should be able to expand this, but we miss the call ; instruction in the constexpr cast. define i32 @call_addrspacecast_callee_type_ifunc_nonvoid(double %arg) { ; CHECK-FINAL-LABEL: define i32 @call_addrspacecast_callee_type_ifunc_nonvoid(double %arg) { ; CHECK-FINAL-NEXT: %ret0 = call addrspace(1) i32 addrspacecast (ptr @ifunc_nonvoid_kept1 to ptr addrspace(1))(double %arg) ; CHECK-FINAL-NEXT: %ret1 = call addrspace(1) i32 addrspacecast (ptr @ifunc_nonvoid_removed1 to ptr addrspace(1))(double %arg) ; CHECK-FINAL-NEXT: %add = add i32 %ret0, %ret1 ; CHECK-FINAL-NEXT: ret i32 %add %ret0 = call addrspace(1) i32 addrspacecast (ptr @ifunc_nonvoid_kept1 to ptr addrspace(1)) (double %arg) %ret1 = call addrspace(1) i32 addrspacecast (ptr @ifunc_nonvoid_removed1 to ptr addrspace(1)) (double %arg) %add = add i32 %ret0, %ret1 ret i32 %add } define i32 @call_used_in_initializer(double %arg) { ; CHECK-FINAL-LABEL: define i32 @call_used_in_initializer(double %arg) { ; CHECK-FINAL-NEXT: %1 = load ptr, ptr getelementptr inbounds ([8 x ptr], ptr @0, i32 0, i32 7), align 8 ; CHECK-FINAL-NEXT: %ret = call i32 %1(double %arg) ; CHECK-FINAL-NEXT: ret i32 %ret %ret = call i32 @ifunc_constant_initializer_user(double %arg) ret i32 %ret } ; CHECK-FINAL-LABEL: define internal void @1() { ; CHECK-FINAL-NEXT: %1 = call ptr @resolver1() ; CHECK-FINAL-NEXT: store ptr %1, ptr @0, align 8 ; CHECK-FINAL-NEXT: %2 = call ptr @resolver2() ; CHECK-FINAL-NEXT: store ptr %2, ptr getelementptr inbounds ([8 x ptr], ptr @0, i32 0, i32 1), align 8 ; CHECK-FINAL-NEXT: %3 = call ptr @resolver3() ; CHECK-FINAL-NEXT: store ptr %3, ptr getelementptr inbounds ([8 x ptr], ptr @0, i32 0, i32 2), align 8 ; CHECK-FINAL-NEXT: %4 = call ptr @resolver4() ; CHECK-FINAL-NEXT: store ptr %4, ptr getelementptr inbounds ([8 x ptr], ptr @0, i32 0, i32 3), align 8 ; CHECK-FINAL-NEXT: %5 = call ptr @resolver5() ; CHECK-FINAL-NEXT: store ptr %5, ptr getelementptr inbounds ([8 x ptr], ptr @0, i32 0, i32 4), align 8 ; CHECK-FINAL-NEXT: %6 = call ptr @resolver5() ; CHECK-FINAL-NEXT: store ptr %6, ptr getelementptr inbounds ([8 x ptr], ptr @0, i32 0, i32 5), align 8 ; CHECK-FINAL-NEXT: %7 = call ptr @resolver5() ; CHECK-FINAL-NEXT: store ptr %7, ptr getelementptr inbounds ([8 x ptr], ptr @0, i32 0, i32 6), align 8 ; CHECK-FINAL-NEXT: %8 = call ptr @resolver5() ; CHECK-FINAL-NEXT: store ptr %8, ptr getelementptr inbounds ([8 x ptr], ptr @0, i32 0, i32 7), align 8 ; CHECK-FINAL-NEXT: ret void ; CHECK-FINAL-NEXT: }