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[tests] precommit a tests for D96534 (and other range quality items)

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Philip Reames 2021-02-11 17:02:59 -08:00
parent 6538cef317
commit b911a71427
1 changed files with 88 additions and 0 deletions
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llvm/test/Analysis/ScalarEvolution/ranges.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution | FileCheck %s
; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s
; Collection of cases exercising range logic, mostly (but not exclusively)
; involving SCEVUnknowns.
declare void @llvm.assume(i1)
define i32 @ashr(i32 %a) {
; CHECK-LABEL: 'ashr'
; CHECK-NEXT: Classifying expressions for: @ashr
; CHECK-NEXT: %ashr = ashr i32 %a, 31
; CHECK-NEXT: --> %ashr U: [0,1) S: [-1,1)
; CHECK-NEXT: Determining loop execution counts for: @ashr
;
%pos = icmp sge i32 %a, 0
call void @llvm.assume(i1 %pos)
%ashr = ashr i32 %a, 31
ret i32 %ashr
}
define i32 @shl(i32 %a) {
; CHECK-LABEL: 'shl'
; CHECK-NEXT: Classifying expressions for: @shl
; CHECK-NEXT: %res = shl i32 %a, 2
; CHECK-NEXT: --> (4 * %a) U: [0,-3) S: [-2147483648,2147483645)
; CHECK-NEXT: Determining loop execution counts for: @shl
;
%pos = icmp slt i32 %a, 1024
call void @llvm.assume(i1 %pos)
%res = shl i32 %a, 2
ret i32 %res
}
define i32 @lshr(i32 %a) {
; CHECK-LABEL: 'lshr'
; CHECK-NEXT: Classifying expressions for: @lshr
; CHECK-NEXT: %res = lshr i32 %a, 31
; CHECK-NEXT: --> (%a /u -2147483648) U: [0,2) S: [0,2)
; CHECK-NEXT: Determining loop execution counts for: @lshr
;
%pos = icmp sge i32 %a, 0
call void @llvm.assume(i1 %pos)
%res = lshr i32 %a, 31
ret i32 %res
}
define i32 @udiv(i32 %a) {
; CHECK-LABEL: 'udiv'
; CHECK-NEXT: Classifying expressions for: @udiv
; CHECK-NEXT: %res = udiv i32 %a, -2147483648
; CHECK-NEXT: --> (%a /u -2147483648) U: [0,2) S: [0,2)
; CHECK-NEXT: Determining loop execution counts for: @udiv
;
%pos = icmp sge i32 %a, 0
call void @llvm.assume(i1 %pos)
%res = udiv i32 %a, 2147483648
ret i32 %res
}
define i64 @sext(i32 %a) {
; CHECK-LABEL: 'sext'
; CHECK-NEXT: Classifying expressions for: @sext
; CHECK-NEXT: %res = sext i32 %a to i64
; CHECK-NEXT: --> (sext i32 %a to i64) U: [-2147483648,2147483648) S: [-2147483648,2147483648)
; CHECK-NEXT: Determining loop execution counts for: @sext
;
%pos = icmp sge i32 %a, 0
call void @llvm.assume(i1 %pos)
%res = sext i32 %a to i64
ret i64 %res
}
define i64 @zext(i32 %a) {
; CHECK-LABEL: 'zext'
; CHECK-NEXT: Classifying expressions for: @zext
; CHECK-NEXT: %res = zext i32 %a to i64
; CHECK-NEXT: --> (zext i32 %a to i64) U: [0,4294967296) S: [0,4294967296)
; CHECK-NEXT: Determining loop execution counts for: @zext
;
%pos = icmp sge i32 %a, 0
call void @llvm.assume(i1 %pos)
%res = zext i32 %a to i64
ret i64 %res
}