Ok for trunk and releases/gcc-14?
--
On Cortex-M4, the code generated is:
cmp r0, r1
itte ne
lslne r0, r0, r1
asrne r0, r0, #1
moveq r0, r1
add r0, r0, r1
bx lr
On Cortex-M7, the code generated is:
cmp r0, r1
beq .L3
lsls r0, r0, r1
asrs r0, r0, #1
add r0, r0, r1
bx lr
.L3:
mov r0, r1
add r0, r0, r1
bx lr
As Cortex-M7 only allow maximum one conditional instruction, force
Cortex-M4 to have a stable test case.
gcc/testsuite/ChangeLog:
* gcc.target/arm/thumb-ifcvt.c: Use -mtune=cortex-m4.
Signed-off-by: Torbjörn SVENSSON <[email protected]>
---
gcc/testsuite/gcc.target/arm/thumb-ifcvt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/testsuite/gcc.target/arm/thumb-ifcvt.c
b/gcc/testsuite/gcc.target/arm/thumb-ifcvt.c
index 02e56f53b0d..c7786faae76 100644
--- a/gcc/testsuite/gcc.target/arm/thumb-ifcvt.c
+++ b/gcc/testsuite/gcc.target/arm/thumb-ifcvt.c
@@ -1,7 +1,7 @@
/* Check that Thumb 16-bit shifts can be if-converted. */
/* { dg-do compile } */
/* { dg-require-effective-target arm_thumb2_ok } */
-/* { dg-options "-O2 -mthumb -mno-restrict-it" } */
+/* { dg-options "-O2 -mthumb -mtune=cortex-m4 -mno-restrict-it" } */
int
foo (int a, int b)
--
2.25.1
