https://gcc.gnu.org/g:f6ce85502eb2e4e7bbd9b3c6c1c065a004f8f531
commit r15-311-gf6ce85502eb2e4e7bbd9b3c6c1c065a004f8f531
Author: Hans-Peter Nilsson <h...@bitrange.com>
Date: Wed May 8 04:11:20 2024 +0200
Revert "Revert "testsuite/gcc.target/cris/pr93372-2.c: Handle xpass from
combine improvement""
This reverts commit 39f81924d88e3cc197fc3df74204c9b5e01e12f7.
Diff:
---
gcc/testsuite/gcc.target/cris/pr93372-2.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/gcc/testsuite/gcc.target/cris/pr93372-2.c
b/gcc/testsuite/gcc.target/cris/pr93372-2.c
index 912069c018d5..2ef6471a990b 100644
--- a/gcc/testsuite/gcc.target/cris/pr93372-2.c
+++ b/gcc/testsuite/gcc.target/cris/pr93372-2.c
@@ -1,19 +1,20 @@
/* Check that eliminable compare-instructions are eliminated. */
/* { dg-do compile } */
/* { dg-options "-O2" } */
-/* { dg-final { scan-assembler-not "\tcmp|\ttest" { xfail *-*-* } } } */
-/* { dg-final { scan-assembler-not "\tnot" { xfail cc0 } } } */
-/* { dg-final { scan-assembler-not "\tlsr" { xfail cc0 } } } */
+/* { dg-final { scan-assembler-not "\tcmp|\ttest" } } */
+/* { dg-final { scan-assembler-not "\tnot" } } */
+/* { dg-final { scan-assembler-not "\tlsr" } } */
+/* We should get just one move, storing the result into *d. */
+/* { dg-final { scan-assembler-times "\tmove" 1 } } */
int f(int a, int b, int *d)
{
int c = a - b;
- /* Whoops! We get a cmp.d with the original operands here. */
+ /* We used to get a cmp.d with the original operands here. */
*d = (c == 0);
- /* Whoops! While we don't get a test.d for the result here for cc0,
- we get a sequence of insns: a move, a "not" and a shift of the
- subtraction-result, where a simple "spl" would have done. */
+ /* We used to get a suboptimal sequence, but now we get the optimal "sge"
+ (a.k.a "spl") re-using flags from the subtraction. */
return c >= 0;
}
