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llvm-mirror/test/Transforms/LoopStrengthReduce/share_code_in_preheader.ll
Dan Gohman 205b641954 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.

llvm-svn: 81537
2009-09-11 18:01:28 +00:00

28 lines
1.2 KiB
LLVM

; RUN: opt < %s -loop-reduce -S | grep mul | count 1
; LSR should not make two copies of the Q*L expression in the preheader!
define i8 @test(i8* %A, i8* %B, i32 %L, i32 %Q, i32 %N.s) {
entry:
%tmp.6 = mul i32 %Q, %L ; <i32> [#uses=1]
%N = bitcast i32 %N.s to i32 ; <i32> [#uses=1]
br label %no_exit
no_exit: ; preds = %no_exit, %entry
%indvar.ui = phi i32 [ 0, %entry ], [ %indvar.next, %no_exit ] ; <i32> [#uses=2]
%Sum.0.0 = phi i8 [ 0, %entry ], [ %tmp.21, %no_exit ] ; <i8> [#uses=1]
%indvar = bitcast i32 %indvar.ui to i32 ; <i32> [#uses=1]
%N_addr.0.0 = sub i32 %N.s, %indvar ; <i32> [#uses=1]
%tmp.8 = add i32 %N_addr.0.0, %tmp.6 ; <i32> [#uses=2]
%tmp.9 = getelementptr i8* %A, i32 %tmp.8 ; <i8*> [#uses=1]
%tmp.10 = load i8* %tmp.9 ; <i8> [#uses=1]
%tmp.17 = getelementptr i8* %B, i32 %tmp.8 ; <i8*> [#uses=1]
%tmp.18 = load i8* %tmp.17 ; <i8> [#uses=1]
%tmp.19 = sub i8 %tmp.10, %tmp.18 ; <i8> [#uses=1]
%tmp.21 = add i8 %tmp.19, %Sum.0.0 ; <i8> [#uses=2]
%indvar.next = add i32 %indvar.ui, 1 ; <i32> [#uses=2]
%exitcond = icmp eq i32 %indvar.next, %N ; <i1> [#uses=1]
br i1 %exitcond, label %loopexit, label %no_exit
loopexit: ; preds = %no_exit
ret i8 %tmp.21
}