llvm/test/Transforms/InstCombine/modular-format.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; Test that the modular format string library call simplifier works correctly.
;
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"

@.str.int = constant [3 x i8] c"%d\00"
@.str.float = constant [3 x i8] c"%f\00"
@.str.multi = constant [6 x i8] c"%f %d\00"
@.str.noargs = constant [1 x i8] c"\00"

; No aspects are specified, so no transformation occurs.
define void @test_basic(i32 %arg) {
; CHECK-LABEL: @test_basic(
; CHECK-NEXT:    call void (ptr, ...) @basic(ptr nonnull @.str.int, i32 [[ARG:%.*]])
; CHECK-NEXT:    ret void
;
  call void (ptr, ...) @basic(ptr @.str.int, i32 %arg)
  ret void
}

declare void @basic(ptr, ...) #0

; The "float" aspect is present and needed, so no transformation occurs.
define void @test_float_present(double %arg) {
; CHECK-LABEL: @test_float_present(
; CHECK-NEXT:    call void (ptr, ...) @float_present(ptr nonnull @.str.float, double [[ARG:%.*]])
; CHECK-NEXT:    ret void
;
  call void (ptr, ...) @float_present(ptr @.str.float, double %arg)
  ret void
}

declare void @float_present(ptr, ...) #1

; The "float" aspect is present but not needed, so the call is transformed.
define void @test_float_absent(i32 %arg) {
; CHECK-LABEL: @test_float_absent(
; CHECK-NEXT:    call void (ptr, ...) @float_present_mod(ptr nonnull @.str.int, i32 [[ARG:%.*]])
; CHECK-NEXT:    ret void
;
  call void (ptr, ...) @float_absent(ptr @.str.int, i32 %arg)
  ret void
}

declare void @float_absent(ptr, ...) #1

; Unknown aspects are always considered needed, so no transformation occurs.
define void @test_unknown_aspects(i32 %arg) {
; CHECK-LABEL: @test_unknown_aspects(
; CHECK-NEXT:    call void (ptr, ...) @unknown_aspects(ptr nonnull @.str.int, i32 [[ARG:%.*]])
; CHECK-NEXT:    ret void
;
  call void (ptr, ...) @unknown_aspects(ptr @.str.int, i32 %arg)
  ret void
}

declare void @unknown_aspects(ptr, ...) #2

; The call has no arguments to check, so the "float" aspect is not needed and
; the call is transformed.
define void @test_no_args_to_check() {
; CHECK-LABEL: @test_no_args_to_check(
; CHECK-NEXT:    call void (ptr, ...) @float_present_mod(ptr nonnull @.str.noargs)
; CHECK-NEXT:    ret void
;
  call void (ptr, ...) @no_args_to_check(ptr @.str.noargs)
  ret void
}

declare void @no_args_to_check(ptr, ...) #1

; The first argument index is not 2. The "float" aspect is needed, so no
; transformation occurs.
define void @test_first_arg_idx(i32 %ignored, double %arg) {
; CHECK-LABEL: @test_first_arg_idx(
; CHECK-NEXT:    call void (i32, ptr, ...) @first_arg_idx(i32 [[IGNORED:%.*]], ptr nonnull @.str.float, double [[ARG:%.*]])
; CHECK-NEXT:    ret void
;
  call void (i32, ptr, ...) @first_arg_idx(i32 %ignored, ptr @.str.float, double %arg)
  ret void
}

declare void @first_arg_idx(i32, ptr, ...) #3

; One aspect ("unknown") is needed, but one ("float") is not. The call is
; transformed, and a reference to the needed aspect is emitted.
define void @test_partial_aspects(i32 %arg) {
; CHECK-LABEL: @test_partial_aspects(
; CHECK-NEXT:    call void (ptr, ...) @multiple_aspects_mod(ptr nonnull @.str.int, i32 [[ARG:%.*]])
; CHECK-NEXT:    call void @llvm.reloc.none(ptr nonnull @basic_impl_unknown)
; CHECK-NEXT:    ret void
;
  call void (ptr, ...) @partial_aspects(ptr @.str.int, i32 %arg)
  ret void
}

declare void @partial_aspects(ptr, ...) #4

attributes #0 = { "modular-format"="printf,1,2,basic_mod,basic_impl" }
attributes #1 = { "modular-format"="printf,1,2,float_present_mod,basic_impl,float" }
attributes #2 = { "modular-format"="printf,1,2,unknown_aspects_mod,basic_impl,unknown1,unknown2" }
attributes #3 = { "modular-format"="printf,2,3,first_arg_idx_mod,basic_impl,float" }
attributes #4 = { "modular-format"="printf,1,2,multiple_aspects_mod,basic_impl,float,unknown" }