123 lines
4.1 KiB
LLVM
123 lines
4.1 KiB
LLVM
; RUN: opt -S -analyze -scalar-evolution < %s | FileCheck %s
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!0 = !{i8 0, i8 127}
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define void @f0(i8* %len_addr) {
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; CHECK-LABEL: Classifying expressions for: @f0
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entry:
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%len = load i8, i8* %len_addr, !range !0
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%len_norange = load i8, i8* %len_addr
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; CHECK: %len = load i8, i8* %len_addr, !range !0
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; CHECK-NEXT: --> %len U: [0,127) S: [0,127)
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; CHECK: %len_norange = load i8, i8* %len_addr
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; CHECK-NEXT: --> %len_norange U: full-set S: full-set
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%t0 = add i8 %len, 1
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%t1 = add i8 %len, 2
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; CHECK: %t0 = add i8 %len, 1
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; CHECK-NEXT: --> (1 + %len)<nuw><nsw> U: [1,-128) S: [1,-128)
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; CHECK: %t1 = add i8 %len, 2
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; CHECK-NEXT: --> (2 + %len)<nuw> U: [2,-127) S: [2,-127)
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%t2 = sub i8 %len, 1
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%t3 = sub i8 %len, 2
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; CHECK: %t2 = sub i8 %len, 1
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; CHECK-NEXT: --> (-1 + %len)<nsw> U: [-1,126) S: [-1,126)
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; CHECK: %t3 = sub i8 %len, 2
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; CHECK-NEXT: --> (-2 + %len)<nsw> U: [-2,125) S: [-2,125)
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%q0 = add i8 %len_norange, 1
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%q1 = add i8 %len_norange, 2
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; CHECK: %q0 = add i8 %len_norange, 1
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; CHECK-NEXT: --> (1 + %len_norange) U: full-set S: full-set
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; CHECK: %q1 = add i8 %len_norange, 2
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; CHECK-NEXT: --> (2 + %len_norange) U: full-set S: full-set
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%q2 = sub i8 %len_norange, 1
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%q3 = sub i8 %len_norange, 2
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; CHECK: %q2 = sub i8 %len_norange, 1
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; CHECK-NEXT: --> (-1 + %len_norange) U: full-set S: full-set
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; CHECK: %q3 = sub i8 %len_norange, 2
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; CHECK-NEXT: --> (-2 + %len_norange) U: full-set S: full-set
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ret void
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}
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define void @f1(i8* %len_addr) {
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; CHECK-LABEL: Classifying expressions for: @f1
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entry:
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%len = load i8, i8* %len_addr, !range !0
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%len_norange = load i8, i8* %len_addr
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; CHECK: %len = load i8, i8* %len_addr, !range !0
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; CHECK-NEXT: --> %len U: [0,127) S: [0,127)
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; CHECK: %len_norange = load i8, i8* %len_addr
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; CHECK-NEXT: --> %len_norange U: full-set S: full-set
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%t0 = add i8 %len, -1
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%t1 = add i8 %len, -2
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; CHECK: %t0 = add i8 %len, -1
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; CHECK-NEXT: --> (-1 + %len)<nsw> U: [-1,126) S: [-1,126)
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; CHECK: %t1 = add i8 %len, -2
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; CHECK-NEXT: --> (-2 + %len)<nsw> U: [-2,125) S: [-2,125)
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%t0.sext = sext i8 %t0 to i16
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%t1.sext = sext i8 %t1 to i16
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; CHECK: %t0.sext = sext i8 %t0 to i16
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; CHECK-NEXT: --> (-1 + (zext i8 %len to i16))<nsw> U: [-1,126) S: [-1,126)
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; CHECK: %t1.sext = sext i8 %t1 to i16
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; CHECK-NEXT: --> (-2 + (zext i8 %len to i16))<nsw> U: [-2,125) S: [-2,125)
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%q0 = add i8 %len_norange, 1
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%q1 = add i8 %len_norange, 2
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; CHECK: %q0 = add i8 %len_norange, 1
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; CHECK-NEXT: --> (1 + %len_norange) U: full-set S: full-set
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; CHECK: %q1 = add i8 %len_norange, 2
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; CHECK-NEXT: --> (2 + %len_norange) U: full-set S: full-set
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%q0.sext = sext i8 %q0 to i16
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%q1.sext = sext i8 %q1 to i16
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; CHECK: %q0.sext = sext i8 %q0 to i16
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; CHECK-NEXT: --> (sext i8 (1 + %len_norange) to i16) U: [-128,128) S: [-128,128)
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; CHECK: %q1.sext = sext i8 %q1 to i16
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; CHECK-NEXT: --> (sext i8 (2 + %len_norange) to i16) U: [-128,128) S: [-128,128)
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ret void
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}
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define void @f2(i8* %len_addr) {
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; CHECK-LABEL: Classifying expressions for: @f2
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entry:
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%len = load i8, i8* %len_addr, !range !0
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%len_norange = load i8, i8* %len_addr
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; CHECK: %len = load i8, i8* %len_addr, !range !0
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; CHECK-NEXT: --> %len U: [0,127) S: [0,127)
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; CHECK: %len_norange = load i8, i8* %len_addr
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; CHECK-NEXT: --> %len_norange U: full-set S: full-set
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%t0 = add i8 %len, 1
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%t1 = add i8 %len, 2
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; CHECK: %t0 = add i8 %len, 1
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; CHECK-NEXT: --> (1 + %len)<nuw><nsw>
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; CHECK: %t1 = add i8 %len, 2
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; CHECK-NEXT: --> (2 + %len)<nuw>
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%t0.zext = zext i8 %t0 to i16
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%t1.zext = zext i8 %t1 to i16
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; CHECK: %t0.zext = zext i8 %t0 to i16
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; CHECK-NEXT: --> (1 + (zext i8 %len to i16))<nuw><nsw> U: [1,128) S: [1,128)
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; CHECK: %t1.zext = zext i8 %t1 to i16
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; CHECK-NEXT: --> (2 + (zext i8 %len to i16))<nuw><nsw> U: [2,129) S: [2,129)
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%q0 = add i8 %len_norange, 1
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%q1 = add i8 %len_norange, 2
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%q0.zext = zext i8 %q0 to i16
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%q1.zext = zext i8 %q1 to i16
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; CHECK: %q0.zext = zext i8 %q0 to i16
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; CHECK-NEXT: --> (zext i8 (1 + %len_norange) to i16) U: [0,256) S: [0,256)
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; CHECK: %q1.zext = zext i8 %q1 to i16
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; CHECK-NEXT: --> (zext i8 (2 + %len_norange) to i16) U: [0,256) S: [0,256)
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ret void
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}
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