diff options
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/CodeGen/X86/MergeConsecutiveStores.ll | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/MergeConsecutiveStores.ll b/llvm/test/CodeGen/X86/MergeConsecutiveStores.ll index b50253bf2b0..4d7cb765d7b 100644 --- a/llvm/test/CodeGen/X86/MergeConsecutiveStores.ll +++ b/llvm/test/CodeGen/X86/MergeConsecutiveStores.ll @@ -371,6 +371,40 @@ define void @MergeLoadStoreBaseIndexOffset(i64* %a, i8* %b, i8* %c, i32 %n) { } ; Make sure that we merge the consecutive load/store sequence below and use a +; word (16 bit) instead of a byte copy for complicated address calculation. +; . +; CHECK-LABEL: MergeLoadStoreBaseIndexOffsetComplicated: +; BWON: movzwl (%{{.*}},%{{.*}}), %e[[REG:[a-z]+]] +; BWOFF: movw (%{{.*}},%{{.*}}), %[[REG:[a-z]+]] +; CHECK: movw %[[REG]], (%{{.*}}) +define void @MergeLoadStoreBaseIndexOffsetComplicated(i8* %a, i8* %b, i8* %c, i64 %n) { + br label %1 + +; <label>:1 + %.09 = phi i64 [ 0, %0 ], [ %13, %1 ] + %.08 = phi i8* [ %b, %0 ], [ %12, %1 ] + %2 = load i8, i8* %.08, align 1 + %3 = sext i8 %2 to i64 + %4 = getelementptr inbounds i8, i8* %c, i64 %3 + %5 = load i8, i8* %4, align 1 + %6 = add nsw i64 %3, 1 + %7 = getelementptr inbounds i8, i8* %c, i64 %6 + %8 = load i8, i8* %7, align 1 + %9 = getelementptr inbounds i8, i8* %a, i64 %.09 + store i8 %5, i8* %9, align 1 + %10 = or i64 %.09, 1 + %11 = getelementptr inbounds i8, i8* %a, i64 %10 + store i8 %8, i8* %11, align 1 + %12 = getelementptr inbounds i8, i8* %.08, i64 1 + %13 = add nuw nsw i64 %.09, 2 + %14 = icmp slt i64 %13, %n + br i1 %14, label %1, label %15 + +; <label>:15 + ret void +} + +; Make sure that we merge the consecutive load/store sequence below and use a ; word (16 bit) instead of a byte copy even if there are intermediate sign ; extensions. ; CHECK-LABEL: MergeLoadStoreBaseIndexOffsetSext: |
