[PowerPC] Precommit test case for issue 61882. NFC.

diff --git a/llvm/test/CodeGen/PowerPC/pr61882.ll b/llvm/test/CodeGen/PowerPC/pr61882.ll
new file mode 100644 (file)
index 0000000..51d30d6
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/pr61882.ll
@@ -0,0 +1,52 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
+; RUN: llc -verify-machineinstrs -ppc-asm-full-reg-names -mtriple=powerpc \
+; RUN:   -mcpu=pwr7 < %s | FileCheck %s
+; RUN: llc -verify-machineinstrs -ppc-asm-full-reg-names -mtriple=powerpc \
+; RUN:   -mcpu=pwr8 < %s | FileCheck %s --check-prefix=PWR8
+
+define void @foo(ptr %a, i32 %x) {
+; CHECK-LABEL: foo:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    rlwinm r5, r3, 3, 27, 28
+; CHECK-NEXT:    li r6, 255
+; CHECK-NEXT:    sync
+; CHECK-NEXT:    xori r5, r5, 24
+; CHECK-NEXT:    rlwinm r3, r3, 0, 0, 29
+; CHECK-NEXT:    slw r7, r4, r5
+; CHECK-NEXT:    slw r6, r6, r5
+; CHECK-NEXT:    and r7, r7, r6
+; CHECK-NEXT:  .LBB0_1:
+; CHECK-NEXT:    lwarx r8, 0, r3
+; CHECK-NEXT:    and r9, r8, r6
+; CHECK-NEXT:    srw r9, r9, r5
+; CHECK-NEXT:    extsb r9, r9
+; CHECK-NEXT:    cmpw r9, r4
+; CHECK-NEXT:    bgt cr0, .LBB0_3
+; CHECK-NEXT:  # %bb.2:
+; CHECK-NEXT:    andc r8, r8, r6
+; CHECK-NEXT:    or r8, r7, r8
+; CHECK-NEXT:    stwcx. r8, 0, r3
+; CHECK-NEXT:    bne cr0, .LBB0_1
+; CHECK-NEXT:  .LBB0_3:
+; CHECK-NEXT:    lwsync
+; CHECK-NEXT:    blr
+;
+; PWR8-LABEL: foo:
+; PWR8:       # %bb.0:
+; PWR8-NEXT:    extsb r4, r4
+; PWR8-NEXT:    sync
+; PWR8-NEXT:  .LBB0_1:
+; PWR8-NEXT:    lbarx r5, 0, r3
+; PWR8-NEXT:    extsb r5, r5
+; PWR8-NEXT:    cmpw r5, r4
+; PWR8-NEXT:    bgt cr0, .LBB0_3
+; PWR8-NEXT:  # %bb.2:
+; PWR8-NEXT:    stbcx. r4, 0, r3
+; PWR8-NEXT:    bne cr0, .LBB0_1
+; PWR8-NEXT:  .LBB0_3:
+; PWR8-NEXT:    lwsync
+; PWR8-NEXT:    blr
+  %val = trunc i32 %x to i8
+  %1 = atomicrmw max ptr %a, i8 %val seq_cst
+  ret void
+}