[DAGCombiner] Add target hook function to decide folding (mul (add x, c1), c2)

[llvm-project.git] / llvm / test / Transforms / MergeFunc / merge-const-ptr-and-int.ll

; RUN: opt -mergefunc -S < %s | FileCheck %s
; RUN: opt -mergefunc -S < %s | FileCheck -check-prefix=MERGE %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"

; Afunc and Bfunc differ only in that one returns i64, the other a pointer.
; These should be merged.
define internal i64 @Afunc(i32* %P, i32* %Q) {
; CHECK-LABEL: define internal i64 @Afunc
  store i32 4, i32* %P
  store i32 6, i32* %Q
  ret i64 0
}

define internal i64* @Bfunc(i32* %P, i32* %Q) {
; MERGE-NOT: @Bfunc
  store i32 4, i32* %P
  store i32 6, i32* %Q
  ret i64* null
}