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      1 ; RUN: opt < %s -sroa -S | FileCheck %s
      2 ; RUN: opt < %s -sroa -force-ssa-updater -S | FileCheck %s
      3 
      4 target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-n8:16:32:64"
      5 
      6 define i8 @test1() {
      7 ; We fully promote these to the i24 load or store size, resulting in just masks
      8 ; and other operations that instcombine will fold, but no alloca. Note this is
      9 ; the same as test12 in basictest.ll, but here we assert big-endian byte
     10 ; ordering.
     11 ;
     12 ; CHECK: @test1
     13 
     14 entry:
     15   %a = alloca [3 x i8]
     16   %b = alloca [3 x i8]
     17 ; CHECK-NOT: alloca
     18 
     19   %a0ptr = getelementptr [3 x i8]* %a, i64 0, i32 0
     20   store i8 0, i8* %a0ptr
     21   %a1ptr = getelementptr [3 x i8]* %a, i64 0, i32 1
     22   store i8 0, i8* %a1ptr
     23   %a2ptr = getelementptr [3 x i8]* %a, i64 0, i32 2
     24   store i8 0, i8* %a2ptr
     25   %aiptr = bitcast [3 x i8]* %a to i24*
     26   %ai = load i24* %aiptr
     27 ; CHECK-NOT: store
     28 ; CHECK-NOT: load
     29 ; CHECK:      %[[ext2:.*]] = zext i8 0 to i24
     30 ; CHECK-NEXT: %[[mask2:.*]] = and i24 undef, -256
     31 ; CHECK-NEXT: %[[insert2:.*]] = or i24 %[[mask2]], %[[ext2]]
     32 ; CHECK-NEXT: %[[ext1:.*]] = zext i8 0 to i24
     33 ; CHECK-NEXT: %[[shift1:.*]] = shl i24 %[[ext1]], 8
     34 ; CHECK-NEXT: %[[mask1:.*]] = and i24 %[[insert2]], -65281
     35 ; CHECK-NEXT: %[[insert1:.*]] = or i24 %[[mask1]], %[[shift1]]
     36 ; CHECK-NEXT: %[[ext0:.*]] = zext i8 0 to i24
     37 ; CHECK-NEXT: %[[shift0:.*]] = shl i24 %[[ext0]], 16
     38 ; CHECK-NEXT: %[[mask0:.*]] = and i24 %[[insert1]], 65535
     39 ; CHECK-NEXT: %[[insert0:.*]] = or i24 %[[mask0]], %[[shift0]]
     40 
     41   %biptr = bitcast [3 x i8]* %b to i24*
     42   store i24 %ai, i24* %biptr
     43   %b0ptr = getelementptr [3 x i8]* %b, i64 0, i32 0
     44   %b0 = load i8* %b0ptr
     45   %b1ptr = getelementptr [3 x i8]* %b, i64 0, i32 1
     46   %b1 = load i8* %b1ptr
     47   %b2ptr = getelementptr [3 x i8]* %b, i64 0, i32 2
     48   %b2 = load i8* %b2ptr
     49 ; CHECK-NOT: store
     50 ; CHECK-NOT: load
     51 ; CHECK:      %[[shift0:.*]] = lshr i24 %[[insert0]], 16
     52 ; CHECK-NEXT: %[[trunc0:.*]] = trunc i24 %[[shift0]] to i8
     53 ; CHECK-NEXT: %[[shift1:.*]] = lshr i24 %[[insert0]], 8
     54 ; CHECK-NEXT: %[[trunc1:.*]] = trunc i24 %[[shift1]] to i8
     55 ; CHECK-NEXT: %[[trunc2:.*]] = trunc i24 %[[insert0]] to i8
     56 
     57   %bsum0 = add i8 %b0, %b1
     58   %bsum1 = add i8 %bsum0, %b2
     59   ret i8 %bsum1
     60 ; CHECK:      %[[sum0:.*]] = add i8 %[[trunc0]], %[[trunc1]]
     61 ; CHECK-NEXT: %[[sum1:.*]] = add i8 %[[sum0]], %[[trunc2]]
     62 ; CHECK-NEXT: ret i8 %[[sum1]]
     63 }
     64 
     65 define i64 @test2() {
     66 ; Test for various mixed sizes of integer loads and stores all getting
     67 ; promoted.
     68 ;
     69 ; CHECK: @test2
     70 
     71 entry:
     72   %a = alloca [7 x i8]
     73 ; CHECK-NOT: alloca
     74 
     75   %a0ptr = getelementptr [7 x i8]* %a, i64 0, i32 0
     76   %a1ptr = getelementptr [7 x i8]* %a, i64 0, i32 1
     77   %a2ptr = getelementptr [7 x i8]* %a, i64 0, i32 2
     78   %a3ptr = getelementptr [7 x i8]* %a, i64 0, i32 3
     79 
     80 ; CHECK-NOT: store
     81 ; CHECK-NOT: load
     82 
     83   %a0i16ptr = bitcast i8* %a0ptr to i16*
     84   store i16 1, i16* %a0i16ptr
     85 
     86   store i8 1, i8* %a2ptr
     87 ; CHECK:      %[[mask1:.*]] = and i40 undef, 4294967295
     88 ; CHECK-NEXT: %[[insert1:.*]] = or i40 %[[mask1]], 4294967296
     89 
     90   %a3i24ptr = bitcast i8* %a3ptr to i24*
     91   store i24 1, i24* %a3i24ptr
     92 ; CHECK-NEXT: %[[mask2:.*]] = and i40 %[[insert1]], -4294967041
     93 ; CHECK-NEXT: %[[insert2:.*]] = or i40 %[[mask2]], 256
     94 
     95   %a2i40ptr = bitcast i8* %a2ptr to i40*
     96   store i40 1, i40* %a2i40ptr
     97 ; CHECK-NEXT: %[[ext3:.*]] = zext i40 1 to i56
     98 ; CHECK-NEXT: %[[mask3:.*]] = and i56 undef, -1099511627776
     99 ; CHECK-NEXT: %[[insert3:.*]] = or i56 %[[mask3]], %[[ext3]]
    100 
    101 ; CHECK-NOT: store
    102 ; CHECK-NOT: load
    103 
    104   %aiptr = bitcast [7 x i8]* %a to i56*
    105   %ai = load i56* %aiptr
    106   %ret = zext i56 %ai to i64
    107   ret i64 %ret
    108 ; CHECK-NEXT: %[[ext4:.*]] = zext i16 1 to i56
    109 ; CHECK-NEXT: %[[shift4:.*]] = shl i56 %[[ext4]], 40
    110 ; CHECK-NEXT: %[[mask4:.*]] = and i56 %[[insert3]], 1099511627775
    111 ; CHECK-NEXT: %[[insert4:.*]] = or i56 %[[mask4]], %[[shift4]]
    112 ; CHECK-NEXT: %[[ret:.*]] = zext i56 %[[insert4]] to i64
    113 ; CHECK-NEXT: ret i64 %[[ret]]
    114 }
    115