forked from OSchip/llvm-project
43 lines
1.1 KiB
LLVM
43 lines
1.1 KiB
LLVM
; RUN: opt -analyze -scalar-evolution -S < %s | FileCheck %s
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define i64 @test1(i32 %a, i32 %b) {
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; CHECK-LABEL: @test1
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%div = udiv i32 %a, %b
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%zext = zext i32 %div to i64
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; CHECK: %zext
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; CHECK-NEXT: --> ((zext i32 %a to i64) /u (zext i32 %b to i64))
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ret i64 %zext
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}
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define i64 @test2(i32 %a, i32 %b) {
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; CHECK-LABEL: @test2
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%rem = urem i32 %a, %b
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%zext = zext i32 %rem to i64
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; CHECK: %zext
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; CHECK-NEXT: --> ((zext i32 %a to i64) + (-1 * (zext i32 %b to i64) * ((zext i32 %a to i64) /u (zext i32 %b to i64))))
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ret i64 %zext
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}
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define i64 @test3(i32 %a, i32 %b) {
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; CHECK-LABEL: @test3
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%div = udiv i32 %a, %b
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%mul = mul i32 %div, %b
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%sub = sub i32 %a, %mul
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%zext = zext i32 %sub to i64
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; CHECK: %zext
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; CHECK-NEXT: --> ((zext i32 %a to i64) + (-1 * (zext i32 %b to i64) * ((zext i32 %a to i64) /u (zext i32 %b to i64))))
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ret i64 %zext
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}
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define i64 @test4(i32 %t) {
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; CHECK-LABEL: @test4
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%a = udiv i32 %t, 2
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%div = udiv i32 %t, 112
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%mul = mul i32 %div, 56
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%sub = sub i32 %a, %mul
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%zext = zext i32 %sub to i64
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; CHECK: %zext
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; CHECK-NEXT: --> ((-56 * ((zext i32 %t to i64) /u 112)) + ((zext i32 %t to i64) /u 2))
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ret i64 %zext
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}
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