2012-06-21 22:52:49 +00:00
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; RUN: opt < %s -instcombine -S | FileCheck %s
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define i32 @t1(i16 zeroext %x, i32 %y) nounwind {
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entry:
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; CHECK: t1
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; CHECK-NOT: sdiv
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; CHECK: lshr i32 %conv
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%conv = zext i16 %x to i32
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%s = shl i32 2, %y
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%d = sdiv i32 %conv, %s
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ret i32 %d
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}
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; rdar://11721329
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define i64 @t2(i64 %x, i32 %y) nounwind {
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; CHECK: t2
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; CHECK-NOT: udiv
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; CHECK: lshr i64 %x
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%1 = shl i32 1, %y
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%2 = zext i32 %1 to i64
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%3 = udiv i64 %x, %2
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ret i64 %3
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}
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2012-09-21 16:26:41 +00:00
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; PR13250
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define i64 @t3(i64 %x, i32 %y) nounwind {
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; CHECK: t3
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; CHECK-NOT: udiv
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; CHECK-NEXT: %1 = add i32 %y, 2
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; CHECK-NEXT: %2 = zext i32 %1 to i64
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; CHECK-NEXT: %3 = lshr i64 %x, %2
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; CHECK-NEXT: ret i64 %3
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%1 = shl i32 4, %y
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%2 = zext i32 %1 to i64
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%3 = udiv i64 %x, %2
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ret i64 %3
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}
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