1 ; Test zero extensions from an i32 to an i64. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5 ; Test register extension, starting with an i32. 6 define i64 @f1(i32 %a) { 7 ; CHECK-LABEL: f1: 8 ; CHECK: llgfr %r2, %r2 9 ; CHECK: br %r14 10 %ext = zext i32 %a to i64 11 ret i64 %ext 12 } 13 14 ; ...and again with an i64. 15 define i64 @f2(i64 %a) { 16 ; CHECK-LABEL: f2: 17 ; CHECK: llgfr %r2, %r2 18 ; CHECK: br %r14 19 %word = trunc i64 %a to i32 20 %ext = zext i32 %word to i64 21 ret i64 %ext 22 } 23 24 ; Check ANDs that are equivalent to zero extension. 25 define i64 @f3(i64 %a) { 26 ; CHECK-LABEL: f3: 27 ; CHECK: llgfr %r2, %r2 28 ; CHECK: br %r14 29 %ext = and i64 %a, 4294967295 30 ret i64 %ext 31 } 32 33 ; Check LLGF with no displacement. 34 define i64 @f4(i32 *%src) { 35 ; CHECK-LABEL: f4: 36 ; CHECK: llgf %r2, 0(%r2) 37 ; CHECK: br %r14 38 %word = load i32 *%src 39 %ext = zext i32 %word to i64 40 ret i64 %ext 41 } 42 43 ; Check the high end of the LLGF range. 44 define i64 @f5(i32 *%src) { 45 ; CHECK-LABEL: f5: 46 ; CHECK: llgf %r2, 524284(%r2) 47 ; CHECK: br %r14 48 %ptr = getelementptr i32 *%src, i64 131071 49 %word = load i32 *%ptr 50 %ext = zext i32 %word to i64 51 ret i64 %ext 52 } 53 54 ; Check the next word up, which needs separate address logic. 55 ; Other sequences besides this one would be OK. 56 define i64 @f6(i32 *%src) { 57 ; CHECK-LABEL: f6: 58 ; CHECK: agfi %r2, 524288 59 ; CHECK: llgf %r2, 0(%r2) 60 ; CHECK: br %r14 61 %ptr = getelementptr i32 *%src, i64 131072 62 %word = load i32 *%ptr 63 %ext = zext i32 %word to i64 64 ret i64 %ext 65 } 66 67 ; Check the high end of the negative LLGF range. 68 define i64 @f7(i32 *%src) { 69 ; CHECK-LABEL: f7: 70 ; CHECK: llgf %r2, -4(%r2) 71 ; CHECK: br %r14 72 %ptr = getelementptr i32 *%src, i64 -1 73 %word = load i32 *%ptr 74 %ext = zext i32 %word to i64 75 ret i64 %ext 76 } 77 78 ; Check the low end of the LLGF range. 79 define i64 @f8(i32 *%src) { 80 ; CHECK-LABEL: f8: 81 ; CHECK: llgf %r2, -524288(%r2) 82 ; CHECK: br %r14 83 %ptr = getelementptr i32 *%src, i64 -131072 84 %word = load i32 *%ptr 85 %ext = zext i32 %word to i64 86 ret i64 %ext 87 } 88 89 ; Check the next word down, which needs separate address logic. 90 ; Other sequences besides this one would be OK. 91 define i64 @f9(i32 *%src) { 92 ; CHECK-LABEL: f9: 93 ; CHECK: agfi %r2, -524292 94 ; CHECK: llgf %r2, 0(%r2) 95 ; CHECK: br %r14 96 %ptr = getelementptr i32 *%src, i64 -131073 97 %word = load i32 *%ptr 98 %ext = zext i32 %word to i64 99 ret i64 %ext 100 } 101 102 ; Check that LLGF allows an index. 103 define i64 @f10(i64 %src, i64 %index) { 104 ; CHECK-LABEL: f10: 105 ; CHECK: llgf %r2, 524287(%r3,%r2) 106 ; CHECK: br %r14 107 %add1 = add i64 %src, %index 108 %add2 = add i64 %add1, 524287 109 %ptr = inttoptr i64 %add2 to i32 * 110 %word = load i32 *%ptr 111 %ext = zext i32 %word to i64 112 ret i64 %ext 113 } 114
