11aa3707e3
This is D77454, except for stores. All the infrastructure work was done for loads, so the remaining changes necessary are relatively small. Differential Revision: https://reviews.llvm.org/D79968
57 lines
1.5 KiB
LLVM
57 lines
1.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -basicaa -dse -enable-dse-memoryssa -S | FileCheck %s
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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define void @second_store_smaller(i32* noalias %P) {
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; CHECK-LABEL: @second_store_smaller(
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; CHECK-NEXT: store i32 1, i32* [[P:%.*]], align 4
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; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: br label [[BB3:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: br label [[BB3]]
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; CHECK: bb3:
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; CHECK-NEXT: [[P_I16:%.*]] = bitcast i32* [[P]] to i16*
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; CHECK-NEXT: store i16 0, i16* [[P_I16]], align 2
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; CHECK-NEXT: ret void
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;
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store i32 1, i32* %P
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br i1 true, label %bb1, label %bb2
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bb1:
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br label %bb3
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bb2:
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br label %bb3
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bb3:
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%P.i16 = bitcast i32* %P to i16*
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store i16 0, i16* %P.i16
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ret void
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}
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define void @second_store_bigger(i32* noalias %P) {
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; CHECK-LABEL: @second_store_bigger(
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; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: br label [[BB3:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: br label [[BB3]]
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; CHECK: bb3:
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; CHECK-NEXT: [[P_I64:%.*]] = bitcast i32* [[P:%.*]] to i64*
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; CHECK-NEXT: store i64 0, i64* [[P_I64]], align 8
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; CHECK-NEXT: ret void
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;
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store i32 1, i32* %P
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br i1 true, label %bb1, label %bb2
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bb1:
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br label %bb3
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bb2:
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br label %bb3
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bb3:
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%P.i64 = bitcast i32* %P to i64*
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store i64 0, i64* %P.i64
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ret void
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}
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