Since the OP_SETCC instructions can only return a 0 or a 1,
a truncation won't change the value and the OP_SETCC
can be changed to directly return the extended size.
Remove the unneeded truncate.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
simplify.c | 1 +
validation/optim/setne0-trunc.c | 1 -
2 files changed, 1 insertion(+), 1 deletion(-)
diff --git a/simplify.c b/simplify.c
index 728647a3e..45e03de19 100644
--- a/simplify.c
+++ b/simplify.c
@@ -1196,6 +1196,7 @@ static int simplify_cast(struct instruction *insn)
break;
/* fall through */
case OP_ZEXT:
+ case OP_TRUNC:
// simplify:
// setcc.n %t <- %a, %b
// zext.m %r <- (n) %t
diff --git a/validation/optim/setne0-trunc.c b/validation/optim/setne0-trunc.c
index 621314100..6c5494eca 100644
--- a/validation/optim/setne0-trunc.c
+++ b/validation/optim/setne0-trunc.c
@@ -3,7 +3,6 @@ char foo(int a) { return a != 0; }
/*
* check-name: setne0-trunc
* check-command: test-linearize -m64 -Wno-decl $file
- * check-known-to-fail
*
* check-output-ignore
* check-output-excludes: trunc\\.
--
2.18.0
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