Allow remat of LI on PPC.
Allow load-immediates to be rematerialised in the register coalescer for
PPC. This makes test/CodeGen/PowerPC/big-endian-formal-args.ll fail,
because it relies on a register move getting emitted. The immediate load is
equivalent, so change this test case.
Patch by Tobias von Koch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162727 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/PowerPC/remat-imm.ll b/test/CodeGen/PowerPC/remat-imm.ll
new file mode 100644
index 0000000..520921f
--- /dev/null
+++ b/test/CodeGen/PowerPC/remat-imm.ll
@@ -0,0 +1,16 @@
+; RUN: llc < %s | FileCheck %s
+; ModuleID = 'test.c'
+target datalayout = "E-p:32:32:32-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"
+target triple = "powerpc-unknown-linux"
+
+@.str = private unnamed_addr constant [6 x i8] c"%d,%d\00", align 1
+
+define i32 @main() nounwind {
+entry:
+; CHECK: li 4, 128
+; CHECK-NOT: mr 4, {{.*}}
+ %call = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([6 x i8]* @.str, i32 0, i32 0), i32 128, i32 128) nounwind
+ ret i32 0
+}
+
+declare i32 @printf(i8* nocapture, ...) nounwind