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llvm-mirror/test/Transforms/InstCombine/setcc-strength-reduce.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

38 lines
970 B
LLVM

; This test ensures that "strength reduction" of conditional expressions are
; working. Basically this boils down to converting setlt,gt,le,ge instructions
; into equivalent setne,eq instructions.
;
; RUN: opt < %s -instcombine -S | \
; RUN: grep -v {icmp eq} | grep -v {icmp ne} | not grep icmp
; END.
define i1 @test1(i32 %A) {
; setne %A, 0
%B = icmp uge i32 %A, 1 ; <i1> [#uses=1]
ret i1 %B
}
define i1 @test2(i32 %A) {
; setne %A, 0
%B = icmp ugt i32 %A, 0 ; <i1> [#uses=1]
ret i1 %B
}
define i1 @test3(i8 %A) {
; setne %A, -128
%B = icmp sge i8 %A, -127 ; <i1> [#uses=1]
ret i1 %B
}
define i1 @test4(i8 %A) {
; setne %A, 127
%B = icmp sle i8 %A, 126 ; <i1> [#uses=1]
ret i1 %B
}
define i1 @test5(i8 %A) {
; setne %A, 127
%B = icmp slt i8 %A, 127 ; <i1> [#uses=1]
ret i1 %B
}