Check in LLVM r95781.

1 files changed, 31 insertions, 0 deletions

diff --git a/test/CodeGen/Generic/badCallArgLRLLVM.ll b/test/CodeGen/Generic/badCallArgLRLLVM.ll
new file mode 100644
index 0000000..4ed88df
--- /dev/null
+++ b/test/CodeGen/Generic/badCallArgLRLLVM.ll
@@ -0,0 +1,31 @@
+; RUN: llc < %s
+
+; This caused a problem because the argument of a call was defined by
+; the return value of another call that appears later in the code.
+; When processing the first call, the second call has not yet been processed
+; so no LiveRange has been created for its return value.
+; 
+; llc dies in UltraSparcRegInfo::suggestRegs4CallArgs() with:
+;     ERROR: In call instr, no LR for arg: 0x1009e0740 
+;
+
+declare i32 @getInt(i32)
+
+define i32 @main(i32 %argc, i8** %argv) {
+bb0:
+        br label %bb2
+
+bb1:            ; preds = %bb2
+        %reg222 = call i32 @getInt( i32 %reg218 )               ; <i32> [#uses=1]
+        %reg110 = add i32 %reg222, 1            ; <i32> [#uses=2]
+        %b = icmp sle i32 %reg110, 0            ; <i1> [#uses=1]
+        br i1 %b, label %bb2, label %bb3
+
+bb2:            ; preds = %bb1, %bb0
+        %reg218 = call i32 @getInt( i32 %argc )         ; <i32> [#uses=1]
+        br label %bb1
+
+bb3:            ; preds = %bb1
+        ret i32 %reg110
+}
+