llvm-project/llvm/test/Transforms/DeadStoreElimination/MSSA/multiblock-partial.ll

57 lines
1.4 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -basicaa -dse -enable-dse-memoryssa -S | FileCheck %s
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
define void @second_store_smaller(i32* noalias %P) {
; CHECK-LABEL: @second_store_smaller(
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: [[P_I16:%.*]] = bitcast i32* [[P]] to i16*
; CHECK-NEXT: store i16 0, i16* [[P_I16]]
; CHECK-NEXT: ret void
;
store i32 1, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
br label %bb3
bb3:
%P.i16 = bitcast i32* %P to i16*
store i16 0, i16* %P.i16
ret void
}
define void @second_store_bigger(i32* noalias %P) {
; CHECK-LABEL: @second_store_bigger(
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: [[P_I64:%.*]] = bitcast i32* [[P:%.*]] to i64*
; CHECK-NEXT: store i64 0, i64* [[P_I64]]
; CHECK-NEXT: ret void
;
store i32 1, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
br label %bb3
bb3:
%P.i64 = bitcast i32* %P to i64*
store i64 0, i64* %P.i64
ret void
}