1 ; RUN: opt < %s -separate-const-offset-from-gep -dce -S | FileCheck %s
3 ; Several unit tests for -separate-const-offset-from-gep. The transformation
4 ; heavily relies on TargetTransformInfo, so we put these tests under
5 ; target-specific folders.
7 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
8 ; target triple is necessary; otherwise TargetTransformInfo rejects any
10 target triple = "nvptx64-unknown-unknown"
12 %struct.S = type { float, double }
14 @struct_array = global [1024 x %struct.S] zeroinitializer, align 16
15 @float_2d_array = global [32 x [32 x float]] zeroinitializer, align 4
17 ; We should not extract any struct field indices, because fields in a struct
18 ; may have different types.
19 define double* @struct(i32 %i) {
21 %add = add nsw i32 %i, 5
22 %idxprom = sext i32 %add to i64
23 %p = getelementptr inbounds [1024 x %struct.S]* @struct_array, i64 0, i64 %idxprom, i32 1
26 ; CHECK-LABEL: @struct
27 ; CHECK: getelementptr [1024 x %struct.S]* @struct_array, i64 0, i32 %i, i32 1
29 ; We should be able to trace into sext/zext if it's directly used as a GEP
31 define float* @sext_zext(i32 %i, i32 %j) {
35 %i1.ext = sext i32 %i1 to i64
36 %j2.ext = zext i32 %j2 to i64
37 %p = getelementptr inbounds [32 x [32 x float]]* @float_2d_array, i64 0, i64 %i1.ext, i64 %j2.ext
40 ; CHECK-LABEL: @sext_zext
41 ; CHECK: getelementptr [32 x [32 x float]]* @float_2d_array, i64 0, i32 %i, i32 %j
42 ; CHECK: add i64 %{{[0-9]+}}, 136
44 ; We should be able to trace into sext/zext if it can be distributed to both
45 ; operands, e.g., sext (add nsw a, b) == add nsw (sext a), (sext b)
46 define float* @ext_add_no_overflow(i64 %a, i32 %b, i64 %c, i32 %d) {
47 %b1 = add nsw i32 %b, 1
48 %b2 = sext i32 %b1 to i64
50 %d1 = add nuw i32 %d, 1
51 %d2 = zext i32 %d1 to i64
53 %p = getelementptr inbounds [32 x [32 x float]]* @float_2d_array, i64 0, i64 %i, i64 %j
56 ; CHECK-LABEL: @ext_add_no_overflow
57 ; CHECK: [[BASE_PTR:%[0-9]+]] = getelementptr [32 x [32 x float]]* @float_2d_array, i64 0, i64 %{{[0-9]+}}, i64 %{{[0-9]+}}
58 ; CHECK: [[BASE_INT:%[0-9]+]] = ptrtoint float* [[BASE_PTR]] to i64
59 ; CHECK: add i64 [[BASE_INT]], 132
61 ; We should treat "or" with no common bits (%k) as "add", and leave "or" with
62 ; potentially common bits (%l) as is.
63 define float* @or(i64 %i) {
66 %k = or i64 %j, 3 ; no common bits
67 %l = or i64 %j, 4 ; potentially common bits
68 %p = getelementptr inbounds [32 x [32 x float]]* @float_2d_array, i64 0, i64 %k, i64 %l
72 ; CHECK: getelementptr [32 x [32 x float]]* @float_2d_array, i64 0, i64 %j, i64 %l
73 ; CHECK: add i64 %{{[0-9]+}}, 384
75 ; The subexpression (b + 5) is used in both "i = a + (b + 5)" and "*out = b +
76 ; 5". When extracting the constant offset 5, make sure "*out = b + 5" isn't
78 define float* @expr(i64 %a, i64 %b, i64* %out) {
82 %p = getelementptr inbounds [32 x [32 x float]]* @float_2d_array, i64 0, i64 %i, i64 0
83 store i64 %b5, i64* %out
87 ; CHECK: getelementptr [32 x [32 x float]]* @float_2d_array, i64 0, i64 %0, i64 0
88 ; CHECK: add i64 %{{[0-9]+}}, 640
89 ; CHECK: store i64 %b5, i64* %out
91 ; Verifies we handle "sub" correctly.
92 define float* @sub(i64 %i, i64 %j) {
93 %i2 = sub i64 %i, 5 ; i - 5
94 %j2 = sub i64 5, %j ; 5 - i
95 %p = getelementptr inbounds [32 x [32 x float]]* @float_2d_array, i64 0, i64 %i2, i64 %j2
99 ; CHECK: %[[j2:[0-9]+]] = sub i64 0, %j
100 ; CHECK: getelementptr [32 x [32 x float]]* @float_2d_array, i64 0, i64 %i, i64 %[[j2]]
101 ; CHECK: add i64 %{{[0-9]+}}, -620