On Thu, May 16, 2019 at 11:39:38PM +0200, Jakub Jelinek wrote:
> One possibility is to add -fdump-tree-optimized and scan for
> /* { dg-final { scan-tree-dump "pow \\(\[^\n\r]*\\); \\\[tail call\\\]"
> "optimized" } } */
> resp.
> /* { dg-final { scan-tree-dump "log \\(\[^\n\r]*\\); \\\[tail call\\\]"
> "optimized" } } */
Here it is in patch form.
That said, I'm not convinced your patch does what you wanted, because
comparing a month old trunk with today's trunk generates the same assembly
except for .ident, generates as many [tail call] lines in *.optimized dump
as before, emits the same number of jmp\tpow and jmp\tlog instructions as
before (one in a separate routine).
But at least the tests aren't UNSUPPORTED anymore.
2019-05-16 Jakub Jelinek <[email protected]>
PR tree-optimization/90106
* gcc.dg/cdce1.c: Don't scan-assembler, instead -fdump-tree-optimized
and scan-tree-dump for tail call.
* gcc.dg/cdce2.c: Likewise.
--- gcc/testsuite/gcc.dg/cdce1.c.jj 2019-05-16 11:28:22.750177582 +0200
+++ gcc/testsuite/gcc.dg/cdce1.c 2019-05-16 23:50:23.618450891 +0200
@@ -1,9 +1,9 @@
-/* { dg-do run } */
-/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -lm" } */
+/* { dg-do run } */
+/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details
-fdump-tree-optimized -lm" } */
/* { dg-require-effective-target int32plus } */
-/* { dg-final { scan-tree-dump "cdce1.c:17: .* function call is
shrink-wrapped into error conditions\." "cdce" } } */
-/* { dg-final { scan-assembler "jmp pow" } } */
/* { dg-require-effective-target large_double } */
+/* { dg-final { scan-tree-dump "cdce1.c:17: .* function call is shrink-wrapped
into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump "pow \\(\[^\n\r]*\\); \\\[tail call\\\]"
"optimized" } } */
#include <stdlib.h>
#include <math.h>
--- gcc/testsuite/gcc.dg/cdce2.c.jj 2019-05-16 11:28:22.781177075 +0200
+++ gcc/testsuite/gcc.dg/cdce2.c 2019-05-16 23:50:58.505880845 +0200
@@ -1,8 +1,8 @@
-/* { dg-do run } */
+/* { dg-do run } */
/* { dg-skip-if "doubles are floats" { "avr-*-*" } } */
-/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -lm" } */
-/* { dg-final { scan-tree-dump "cdce2.c:16: .* function call is
shrink-wrapped into error conditions\." "cdce" } } */
-/* { dg-final { scan-assembler "jmp log" } } */
+/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details
-fdump-tree-optimized -lm" } */
+/* { dg-final { scan-tree-dump "cdce2.c:16: .* function call is shrink-wrapped
into error conditions\." "cdce" } } */
+/* { dg-final { scan-tree-dump "log \\(\[^\n\r]*\\); \\\[tail call\\\]"
"optimized" } } */
#include <stdlib.h>
#include <math.h>
Jakub
