todo-pr36335-phi-undef.ll
793 Bytes
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -newgvn -S %s | FileCheck %s
; TODO: NewGVN currently miscomiles the function below. PR36335.
declare void @foo(i32)
define void @main(i1 %c1, i1 %c2, i32 %x) {
; CHECK-LABEL: @main(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C1:%.*]], label [[L:%.*]], label [[END:%.*]]
; CHECK: L:
; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X:%.*]], -1
; CHECK-NEXT: call void @foo(i32 [[XOR]])
; CHECK-NEXT: br label [[L]]
; CHECK: end:
; CHECK-NEXT: ret void
;
entry:
br i1 %c1, label %L, label %end
L:
%d.1 = phi i8 [ undef, %entry ], [ -1, %L ]
%conv = sext i8 %d.1 to i32
%xor = xor i32 %x, %conv
%neg = xor i32 %xor, -1
call void @foo(i32 %neg)
br label %L
end:
ret void
}