llvm-6502/test/Transforms/InstCombine/udiv-simplify-bug-1.ll

21 lines
481 B
LLVM
Raw Normal View History

; RUN: opt < %s -instcombine -S > %t1.ll
; RUN: grep udiv %t1.ll | count 2
; RUN: grep zext %t1.ll | count 2
; PR2274
; The udiv instructions shouldn't be optimized away, and the
; sext instructions should be optimized to zext.
define i64 @bar(i32 %x) nounwind {
%y = lshr i32 %x, 30
%r = udiv i32 %y, 3
%z = sext i32 %r to i64
ret i64 %z
}
define i64 @qux(i32 %x, i32 %v) nounwind {
%y = lshr i32 %x, 31
%r = udiv i32 %y, %v
%z = sext i32 %r to i64
ret i64 %z
}