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llvm-mirror/test/Transforms/InstCombine/bitcount.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

20 lines
594 B
LLVM

; Tests to make sure bit counts of constants are folded
; RUN: opt < %s -instcombine -S | grep {ret i32 19}
; RUN: opt < %s -instcombine -S | \
; RUN: grep -v declare | not grep llvm.ct
declare i31 @llvm.ctpop.i31(i31 %val)
declare i32 @llvm.cttz.i32(i32 %val)
declare i33 @llvm.ctlz.i33(i33 %val)
define i32 @test(i32 %A) {
%c1 = call i31 @llvm.ctpop.i31(i31 12415124)
%c2 = call i32 @llvm.cttz.i32(i32 87359874)
%c3 = call i33 @llvm.ctlz.i33(i33 87359874)
%t1 = zext i31 %c1 to i32
%t3 = trunc i33 %c3 to i32
%r1 = add i32 %t1, %c2
%r2 = add i32 %r1, %t3
ret i32 %r2
}