Rebased PNaCl localmods in LLVM to 223109

test/Transforms/NaCl/rewrite-flt-rounds.ll

+; RUN: opt < %s -rewrite-llvm-intrinsic-calls -S | FileCheck %s
+; RUN: opt < %s -rewrite-llvm-intrinsic-calls -S | FileCheck %s -check-prefix=CLEANED
+; Test the @llvm.flt.rounds part of the RewriteLLVMIntrinsics pass
+
+declare i32 @llvm.flt.rounds()
+
+; No declaration or definition of llvm.flt.rounds() should remain.
+; CLEANED-NOT: @llvm.flt.rounds
+
+define i32 @call_flt_rounds() {
+; CHECK: call_flt_rounds
+; CHECK-NEXT: ret i32 1
+  %val = call i32 @llvm.flt.rounds()
+  ret i32 %val
+}
+
+; A more complex example with a number of calls in several BBs.
+define i32 @multiple_calls(i64* %arg, i32 %num) {
+; CHECK: multiple_calls
+entryblock:
+; CHECK: entryblock
+  %v1 = call i32 @llvm.flt.rounds()
+  br label %block1
+block1:
+; CHECK: block1:
+; CHECK-NEXT: %v3 = add i32 1, 1
+  %v2 = call i32 @llvm.flt.rounds()
+  %v3 = add i32 %v2, %v1
+  br label %exitblock
+exitblock:
+; CHECK: exitblock:
+; CHECK-NEXT: %v4 = add i32 1, %v3
+; CHECK-NEXT: %v6 = add i32 1, %v4
+  %v4 = add i32 %v2, %v3
+  %v5 = call i32 @llvm.flt.rounds()
+  %v6 = add i32 %v5, %v4
+  ret i32 %v6
+}