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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
define i32 @f(i64 %a3, i64 %numElements) {
; CHECK-LABEL: define i32 @f(
; CHECK-SAME: i64 [[A3:%.*]], i64 [[NUMELEMENTS:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[COND:%.*]] = icmp ule i64 [[NUMELEMENTS]], 1152921504606846975
; CHECK-NEXT: call void @llvm.assume(i1 [[COND]])
; CHECK-NEXT: [[A1:%.*]] = shl nuw i64 [[NUMELEMENTS]], 4
; CHECK-NEXT: br label [[IF_END:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i64 [[A1]], [[A3]]
; CHECK-NEXT: br i1 [[CMP]], label [[IF_END_I:%.*]], label [[ABORT:%.*]]
; CHECK: if.end.i:
; CHECK-NEXT: [[CMP2_NOT_I:%.*]] = icmp ult i64 [[A1]], [[A3]]
; CHECK-NEXT: br i1 [[CMP2_NOT_I]], label [[ABORT]], label [[EXIT:%.*]]
; CHECK: abort:
; CHECK-NEXT: ret i32 -1
; CHECK: exit:
; CHECK-NEXT: ret i32 0
;
entry:
%cond = icmp ule i64 %numElements, 1152921504606846975
call void @llvm.assume(i1 %cond)
%a1 = shl nuw i64 %numElements, 4
br label %if.end
if.end:
%cmp = icmp ugt i64 %a1, %a3
br i1 %cmp, label %if.end.i, label %abort
if.end.i:
%cmp2.not.i = icmp ult i64 %a1, %a3
br i1 %cmp2.not.i, label %abort, label %exit
abort:
ret i32 -1
exit:
ret i32 0
}
declare void @llvm.assume(i1)
define i1 @negate_overflow_add_1(i64 %x) {
; CHECK-LABEL: define i1 @negate_overflow_add_1(
; CHECK-SAME: i64 [[X:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SUB:%.*]] = add nsw i64 [[X]], -9223372036854775807
; CHECK-NEXT: [[C:%.*]] = icmp slt i64 0, [[SUB]]
; CHECK-NEXT: ret i1 [[C]]
;
entry:
%sub = add nsw i64 %x, -9223372036854775807
%c = icmp slt i64 0, %sub
ret i1 %c
}
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