Handle regmasks in MachineCSE.

[oota-llvm.git] / test / CodeGen / ARM / cse-call.ll

diff --git a/test/CodeGen/ARM/cse-call.ll b/test/CodeGen/ARM/cse-call.ll
new file mode 100644 (file)
index 0000000..eff5de5
--- /dev/null
+++ b/test/CodeGen/ARM/cse-call.ll
@@ -0,0 +1,31 @@
+; RUN: llc < %s -mcpu=arm1136jf-s -verify-machineinstrs | FileCheck %s
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
+target triple = "armv6-apple-ios0.0.0"
+
+; Don't CSE a cmp across a call that clobbers CPSR.
+;
+; CHECK: cmp
+; CHECK: S_trimzeros
+; CHECK: cmp
+; CHECK: strlen
+
+@F_floatmul.man1 = external global [200 x i8], align 1
+@F_floatmul.man2 = external global [200 x i8], align 1
+
+declare i32 @strlen(i8* nocapture) nounwind readonly
+declare void @S_trimzeros(...)
+
+define i8* @F_floatmul(i8* %f1, i8* %f2) nounwind ssp {
+entry:
+  br i1 undef, label %while.end42, label %while.body37
+
+while.body37:                                     ; preds = %while.body37, %entry
+  br i1 false, label %while.end42, label %while.body37
+
+while.end42:                                      ; preds = %while.body37, %entry
+  %. = select i1 undef, i8* getelementptr inbounds ([200 x i8]* @F_floatmul.man1, i32 0, i32 0), i8* getelementptr inbounds ([200 x i8]* @F_floatmul.man2, i32 0, i32 0)
+  %.92 = select i1 undef, i8* getelementptr inbounds ([200 x i8]* @F_floatmul.man2, i32 0, i32 0), i8* getelementptr inbounds ([200 x i8]* @F_floatmul.man1, i32 0, i32 0)
+  tail call void bitcast (void (...)* @S_trimzeros to void (i8*)*)(i8* %.92) nounwind
+  %call47 = tail call i32 @strlen(i8* %.) nounwind
+  unreachable
+}