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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=newgvn -S | FileCheck %s
; github issue #56039
define i8 @src(ptr %a, ptr %b, i1 %c) {
; CHECK-LABEL: @src(
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[LB1:%.*]] = load i8, ptr [[B:%.*]], align 1
; CHECK-NEXT: [[TOBOOL3_NOT_I:%.*]] = icmp eq i8 [[LB1]], 0
; CHECK-NEXT: br i1 [[TOBOOL3_NOT_I]], label [[BB4:%.*]], label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: [[LB2:%.*]] = load i8, ptr [[B]], align 1
; CHECK-NEXT: [[CMP_NOT_I:%.*]] = icmp ult i8 0, [[LB2]]
; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP_NOT_I]])
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: [[LA:%.*]] = load i8, ptr [[A:%.*]], align 1
; CHECK-NEXT: br label [[BB4]]
; CHECK: bb4:
; CHECK-NEXT: ret i8 0
;
br i1 %c, label %bb1, label %bb2
bb1:
%lb1 = load i8, ptr %b
%tobool3.not.i = icmp eq i8 %lb1, 0
br i1 %tobool3.not.i, label %bb4, label %bb3
bb2:
%lb2 = load i8, ptr %b
%cmp.not.i = icmp ult i8 0, %lb2
tail call void @llvm.assume(i1 %cmp.not.i)
br label %bb3
bb3:
%p = phi i8 [ %lb1, %bb1 ], [ %lb2, %bb2 ]
%la = load i8, ptr %a
%xor = xor i8 %la, %p
br label %bb4
bb4:
ret i8 0
}
declare void @llvm.assume(i1)
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