[llvm] r365427 - [PowerPC][MachinePipeliner][NFC] Add a testcase for Phi bug.

[Jinsong Ji via llvm-commits]

Author: jsji
Date: Mon Jul  8 19:27:29 2019
New Revision: 365427

URL: http://llvm.org/viewvc/llvm-project?rev=365427&view=rev
Log:
[PowerPC][MachinePipeliner][NFC] Add a testcase for Phi bug.

Added:
    llvm/trunk/test/CodeGen/PowerPC/sms-phi.ll

Added: llvm/trunk/test/CodeGen/PowerPC/sms-phi.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/sms-phi.ll?rev=365427&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/sms-phi.ll (added)
+++ llvm/trunk/test/CodeGen/PowerPC/sms-phi.ll Mon Jul  8 19:27:29 2019
@@ -0,0 +1,34 @@
+; REQUIRES: asserts
+; RUN: llc < %s -mtriple=powerpc64le-unknown-linux-gnu -verify-machineinstrs\
+; RUN:       -mcpu=pwr9 --ppc-enable-pipeliner -debug-only=pipeliner 2>&1 \
+; RUN:       >/dev/null | FileCheck %s
+define dso_local void @sha512() #0 {
+;CHECK: prolog:
+;CHECK:        %16:g8rc = ADD8 %21:g8rc, %20:g8rc
+;CHECK: epilog:
+;CHECK:        %23:g8rc_and_g8rc_nox0 = PHI %5:g8rc_and_g8rc_nox0, %bb.3, %18:g8rc_and_g8rc_nox0, %bb.4
+;CHECK-NEXT:   %24:g8rc = PHI %6:g8rc, %bb.3, %16:g8rc, %bb.4
+;CHECK-NEXT:   %25:g8rc = PHI %6:g8rc, %bb.3, %16:g8rc, %bb.4
+  br label %1
+
+1:                                                ; preds = %1, %0
+  %2 = phi i64 [ 0, %0 ], [ %12, %1 ]
+  %3 = phi i64 [ undef, %0 ], [ %11, %1 ]
+  %4 = phi i64 [ undef, %0 ], [ %3, %1 ]
+  %5 = getelementptr inbounds [80 x i64], [80 x i64]* null, i64 0, i64 %2
+  %6 = load i64, i64* %5, align 8
+  %7 = add i64 0, %6
+  %8 = and i64 %3, %4
+  %9 = or i64 0, %8
+  %10 = add i64 0, %9
+  %11 = add i64 %10, %7
+  %12 = add nuw nsw i64 %2, 1
+  %13 = icmp eq i64 %12, 80
+  br i1 %13, label %14, label %1
+
+14:                                               ; preds = %1
+  %15 = add i64 %4, 0
+  store i64 %15, i64* undef, align 8
+  ret void
+}
+