Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
simplify.c | 4 ++++
validation/optim/simplify-neg-not.c | 1 -
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/simplify.c b/simplify.c
index fd486172e6e8..8f6b821dcf8c 100644
--- a/simplify.c
+++ b/simplify.c
@@ -1478,6 +1478,10 @@ static int simplify_unop(struct instruction *insn)
return replace_pseudo(insn, &insn->src1, src);
case OP_NEG: // -(-x) --> x
return replace_with_pseudo(insn, def->src);
+ case OP_NOT:
+ insn->opcode = OP_ADD; // -(~x) --> x + 1
+ insn->src2 = value_pseudo(1);
+ return replace_pseudo(insn, &insn->src1, def->src);
case OP_SUB: // -(x - y) --> y - x
insn->opcode = OP_SUB;
use_pseudo(insn, def->src1, &insn->src2);
diff --git a/validation/optim/simplify-neg-not.c b/validation/optim/simplify-neg-not.c
index 4bd0abfb0628..e92352cfeeec 100644
--- a/validation/optim/simplify-neg-not.c
+++ b/validation/optim/simplify-neg-not.c
@@ -3,7 +3,6 @@ int foo(int x) { return -(~x) == x + 1; }
/*
* check-name: simplify-neg-not
* check-command: test-linearize -Wno-decl $file
- * check-known-to-fail
*
* check-output-ignore
* check-output-contains: ret\\..*\\$1
--
2.28.0
