diff mbox series

[9/9] simplify (x | M) cmpu C

Message ID 20210310214950.84192-10-luc.vanoostenryck@gmail.com (mailing list archive)
State Mainlined, archived
Headers show
Series simplify CMP(AND(x,M), C) and CMP(OR(x,M), C) | expand

Commit Message

Luc Van Oostenryck March 10, 2021, 9:49 p.m. UTC 
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
---
 simplify.c                  | 16 ++++++++++++++++
 validation/optim/cmpu-or0.c |  1 -
 2 files changed, 16 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/simplify.c b/simplify.c
index e721f9f860a0..9e3514d838a9 100644
--- a/simplify.c
+++ b/simplify.c
@@ -1324,6 +1324,22 @@  static int simplify_compare_constant(struct instruction *insn, long long value)
 			if ((value & bits) != bits)
 				return replace_with_value(insn, 1);
 			break;
+		case OP_SET_B:
+			if (bits >= value)
+				return replace_with_value(insn, 0);
+			break;
+		case OP_SET_BE:
+			if (bits > value)
+				return replace_with_value(insn, 0);
+			break;
+		case OP_SET_AE:
+			if (bits > value)
+				return replace_with_value(insn, 1);
+			break;
+		case OP_SET_A:
+			if (bits >= value)
+				return replace_with_value(insn, 1);
+			break;
 		case OP_SET_LE:
 			value = sign_extend(value, def->size);
 			if (bits & sign_bit(def->size)) {
diff --git a/validation/optim/cmpu-or0.c b/validation/optim/cmpu-or0.c
index 77360d3feb0f..e97e91809461 100644
--- a/validation/optim/cmpu-or0.c
+++ b/validation/optim/cmpu-or0.c
@@ -12,7 +12,6 @@  int cmpu_ior_gt_lt(int a) { return ((a | MASK) >  (MASK - 1)) EQ(1); }
 /*
  * check-name: cmpu-or0
  * check-command: test-linearize -Wno-decl $file
- * check-known-to-fail
  *
  * check-output-ignore
  * check-output-returns: 1