[llvm] r309825 - [AArch64] Improve the test of conditional branch fusion

[Evandro Menezes via llvm-commits]

Author: evandro
Date: Wed Aug  2 08:34:06 2017
New Revision: 309825

URL: http://llvm.org/viewvc/llvm-project?rev=309825&view=rev
Log:
[AArch64] Improve the test of conditional branch fusion

Separate the checking of the fused pairings with B.cc and CBcc.

Modified:
    llvm/trunk/test/CodeGen/AArch64/misched-fusion.ll

Modified: llvm/trunk/test/CodeGen/AArch64/misched-fusion.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/misched-fusion.ll?rev=309825&r1=309824&r2=309825&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/misched-fusion.ll (original)
+++ llvm/trunk/test/CodeGen/AArch64/misched-fusion.ll Wed Aug  2 08:34:06 2017
@@ -1,14 +1,34 @@
-; RUN: llc -o - %s -mattr=+arith-cbz-fusion | FileCheck %s
-; RUN: llc -o - %s -mcpu=cyclone | FileCheck %s
+; RUN: llc -o - %s -mattr=+arith-bcc-fusion | FileCheck --check-prefix=FUSEBCC %s
+; RUN: llc -o - %s -mattr=+arith-cbz-fusion | FileCheck --check-prefix=FUSECBZ %s
+; RUN: llc -o - %s -mcpu=cyclone            | FileCheck --check-prefix=FUSEBCC --check-prefix=FUSECBZ %s
 
 target triple = "aarch64-unknown"
 
 declare void @foobar(i32 %v0, i32 %v1)
 
+; Make sure cmp is scheduled in front of bcc
+; FUSEBCC-LABEL: test_cmp_bcc:
+; FUSEBCC: cmp {{w[0-9]+}}, #13
+; FUSEBCC-NEXT: b.ne {{.?LBB[0-9_]+}}
+define void @test_cmp_bcc(i32 %a0, i32 %a1) {
+entry:
+  %cond = icmp eq i32 %a0, 13
+  %v1 = add i32 %a1, 7
+  br i1 %cond, label %if, label %exit
+
+if:
+  call void @foobar(i32 %v1, i32 %a0)
+  br label %exit
+
+exit:
+  call void @foobar(i32 %a0, i32 %v1)
+  ret void
+}
+
 ; Make sure sub is scheduled in front of cbnz
-; CHECK-LABEL: test_sub_cbz:
-; CHECK: subs w[[SUBRES:[0-9]+]], w0, #13
-; CHECK: b.ne {{.?LBB[0-9_]+}}
+; FUSECBZ-LABEL: test_sub_cbz:
+; FUSECBZ: subs [[SUBRES:w[0-9]+]], w0, #13
+; FUSECBZ: b.ne {{.?LBB[0-9_]+}}
 define void @test_sub_cbz(i32 %a0, i32 %a1) {
 entry:
   ; except for the fusion opportunity the sub/add should be equal so the