llvm-6502/test/Transforms/MergeFunc/phi-speculation2.ll
Nick Lewycky 579a024661 Add a new MergeFunctions pass. It finds identical functions and merges them.
This triggers only 60 times in llvm-test (look at .llvm.bc, not .linked.rbc)
and so it probably wont be turned on by default. Also, may of those are likely
to go away when PR2973 is fixed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58557 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-02 05:52:50 +00:00

30 lines
605 B
LLVM

; RUN: llvm-as < %s | opt -mergefunc -stats |& grep {functions merged}
define i32 @foo1(i32 %x) {
entry:
%A = add i32 %x, 1
%B = call i32 @foo1(i32 %A)
br label %loop
loop:
%C = phi i32 [%B, %entry], [%D, %loop]
%D = add i32 %C, 2
%E = icmp ugt i32 %D, 10000
br i1 %E, label %loopexit, label %loop
loopexit:
ret i32 %D
}
define i32 @foo2(i32 %x) {
entry:
%0 = add i32 %x, 1
%1 = call i32 @foo2(i32 %0)
br label %loop
loop:
%2 = phi i32 [%1, %entry], [%3, %loop]
%3 = add i32 %2, 2
%4 = icmp ugt i32 %3, 10000
br i1 %4, label %loopexit, label %loop
loopexit:
ret i32 %3
}