Avoid symbol name clash when filling TOC.

Patch by Adhemerval Zanella.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164141 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 27 insertions, 0 deletions

diff --git a/test/CodeGen/PowerPC/2012-09-16-TOC-entry-check.ll b/test/CodeGen/PowerPC/2012-09-16-TOC-entry-check.ll
new file mode 100644
index 0000000..9d2e390
--- /dev/null
+++ b/test/CodeGen/PowerPC/2012-09-16-TOC-entry-check.ll
@@ -0,0 +1,27 @@
+; RUN: llc < %s | FileCheck %s
+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-v128:128:128-n32:64"
+target triple = "powerpc64-unknown-linux-gnu"
+
+; This test check if the TOC entry symbol name won't clash with global .LC0
+; and .LC2 symbols defined in the module.
+
+@.LC0 = internal global [5 x i8] c".LC0\00"
+@.LC2 = internal global [5 x i8] c".LC2\00"
+
+define i32 @foo(double %X, double %Y) nounwind readnone {
+  ; The 1.0 and 3.0 constants generate two TOC entries
+  %cmp = fcmp oeq double %X, 1.000000e+00
+  %conv = zext i1 %cmp to i32
+  %cmp1 = fcmp oeq double %Y, 3.000000e+00
+  %conv2 = zext i1 %cmp1 to i32
+  %add = add nsw i32 %conv2, %conv
+  ret i32 %add
+}
+
+; Check the creation of 2 .tc entries for both double constants. They
+; should be .LC1 and .LC3 to avoid name clash with global constants
+; .LC0 and .LC2
+; CHECK: .LC{{[13]}}:
+; CHECK-NEXT: .tc {{[\._a-zA-Z0-9]+}}[TC],{{[\._a-zA-Z0-9]+}}
+; CHECK: .LC{{[13]}}:
+; CHECK-NEXT: .tc {{[\._a-zA-Z0-9]+}}[TC],{{[\._a-zA-Z0-9]+}}