[gcc r14-9721] GCN: Enable effective-target 'vect_early_break', 'vect_early_break_hw'

[Thomas Schwinge]

https://gcc.gnu.org/g:ec8e3dbdc3befa22b25da975b03d80443f5d938c

commit r14-9721-gec8e3dbdc3befa22b25da975b03d80443f5d938c
Author: Thomas Schwinge <thomas@codesourcery.com>
Date:   Tue Jan 9 10:25:48 2024 +0100

    GCN: Enable effective-target 'vect_early_break', 'vect_early_break_hw'
    
    Via XPASSing test cases after commit a657c7e3518fcfc796f223d47385cad5e97dc9a5
    "testsuite: un-xfail TSVC loops that check for exit control flow vectorization":
    
        PASS: gcc.dg/vect/tsvc/vect-tsvc-s332.c (test for excess errors)
        PASS: gcc.dg/vect/tsvc/vect-tsvc-s332.c execution test
        [-XFAIL:-]{+XPASS:+} gcc.dg/vect/tsvc/vect-tsvc-s332.c scan-tree-dump vect "vectorized 1 loops"
    
        PASS: gcc.dg/vect/tsvc/vect-tsvc-s481.c (test for excess errors)
        PASS: gcc.dg/vect/tsvc/vect-tsvc-s481.c execution test
        [-XFAIL:-]{+XPASS:+} gcc.dg/vect/tsvc/vect-tsvc-s481.c scan-tree-dump vect "vectorized 1 loops"
    
        PASS: gcc.dg/vect/tsvc/vect-tsvc-s482.c (test for excess errors)
        PASS: gcc.dg/vect/tsvc/vect-tsvc-s482.c execution test
        [-XFAIL:-]{+XPASS:+} gcc.dg/vect/tsvc/vect-tsvc-s482.c scan-tree-dump vect "vectorized 1 loops"
    
    ..., it became apparent that GCN, too, does support vectorization of loops with
    early breaks.  The relevant test cases are all-PASS with just the following
    exceptions, to be looked into individually, later on:
    
        PASS: gcc.dg/vect/vect-early-break_25.c (test for excess errors)
        PASS: gcc.dg/vect/vect-early-break_25.c scan-tree-dump-times vect "vectorized 1 loops" 1
        FAIL: gcc.dg/vect/vect-early-break_25.c scan-tree-dump-times vect "Alignment of access forced using peeling" 1
    
        PASS: gcc.dg/vect/vect-early-break_56.c (test for excess errors)
        PASS: gcc.dg/vect/vect-early-break_56.c execution test
        XPASS: gcc.dg/vect/vect-early-break_56.c scan-tree-dump-times vect "vectorized 2 loops" 2
    
            gcc/testsuite/
            * lib/target-supports.exp
            (check_effective_target_vect_early_break)
            (check_effective_target_vect_early_break_hw): Enable for GCN.

Diff:
---
 gcc/testsuite/lib/target-supports.exp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 843515f69d7..9b3bf57d86d 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -4104,6 +4104,7 @@ proc check_effective_target_vect_early_break { } {
 	[istarget aarch64*-*-*]
 	|| [check_effective_target_arm_v8_neon_ok]
 	|| [check_effective_target_sse4]
+	|| [istarget amdgcn-*-*]
 	}}]
 }
 
@@ -4118,6 +4119,7 @@ proc check_effective_target_vect_early_break_hw { } {
 	[istarget aarch64*-*-*]
 	|| [check_effective_target_arm_v8_neon_hw]
 	|| [check_sse4_hw_available]
+	|| [istarget amdgcn-*-*]
 	}}]
 }