Vendor import of llvm trunk r256633:

https://llvm.org/svn/llvm-project/llvm/trunk@256633

1 files changed, 27 insertions, 0 deletions

diff --git a/test/CodeGen/PowerPC/mcm-13.ll b/test/CodeGen/PowerPC/mcm-13.ll
new file mode 100644
index 000000000000..ba371c5026c1
--- /dev/null
+++ b/test/CodeGen/PowerPC/mcm-13.ll
@@ -0,0 +1,27 @@
+; RUN: llc -mcpu=pwr7 -O0 -code-model=medium <%s | FileCheck %s
+; RUN: llc -mcpu=pwr7 -O0 -code-model=large <%s | FileCheck %s
+
+; Test correct code generation for medium and large code model
+; for loading and storing a weak variable
+
+target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
+target triple = "powerpc64-unknown-linux-gnu"
+
+@wi = weak global i32 0, align 4
+
+define signext i32 @test_weak() nounwind {
+entry:
+  %0 = load i32, i32* @wi, align 4
+  %inc = add nsw i32 %0, 1
+  store i32 %inc, i32* @wi, align 4
+  ret i32 %0
+}
+
+; CHECK-LABEL: test_weak:
+; CHECK: addis [[REG1:[0-9]+]], 2, .LC[[TOCNUM:[0-9]+]]@toc@ha
+; CHECK: ld [[REG2:[0-9]+]], .LC[[TOCNUM]]@toc@l([[REG1]])
+; CHECK: lwz {{[0-9]+}}, 0([[REG2]])
+; CHECK: stw {{[0-9]+}}, 0([[REG2]])
+; CHECK: .section .toc
+; CHECK: .LC[[TOCNUM]]:
+; CHECK: .tc {{[a-z0-9A-Z_.]+}}[TC],{{[a-z0-9A-Z_.]+}}