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| ; RUN: opt -analyze -scalar-evolution -S < %s | FileCheck %s
define i16 @test1(i8 %x) {
%A = zext i8 %x to i12
%B = sext i12 %A to i16
; CHECK: zext i8 %x to i16
ret i16 %B
}
define i8 @test2(i8 %x) {
%A = zext i8 %x to i16
%B = add i16 %A, 1025
%C = trunc i16 %B to i8
; CHECK: (1 + %x)
ret i8 %C
}
define i8 @test3(i8 %x) {
%A = zext i8 %x to i16
%B = mul i16 %A, 1027
%C = trunc i16 %B to i8
; CHECK: (3 * %x)
ret i8 %C
}
define void @test4(i32 %x, i32 %y) {
entry:
%Y = and i32 %y, 3
br label %loop
loop:
%A = phi i32 [0, %entry], [%I, %loop]
%rand1 = icmp sgt i32 %A, %Y
%Z1 = select i1 %rand1, i32 %A, i32 %Y
%rand2 = icmp ugt i32 %A, %Z1
%Z2 = select i1 %rand2, i32 %A, i32 %Z1
; CHECK: %Z2 =
; CHECK-NEXT: --> ([[EXPR:.*]]){{ U: [^ ]+ S: [^ ]+}}{{ +}}Exits: 20
%B = trunc i32 %Z2 to i16
%C = sext i16 %B to i30
; CHECK: %C =
; CHECK-NEXT: (trunc i32 ([[EXPR]]) to i30)
%D = sext i16 %B to i32
; CHECK: %D =
; CHECK-NEXT: ([[EXPR]])
%E = sext i16 %B to i34
; CHECK: %E =
; CHECK-NEXT: (zext i32 ([[EXPR]]) to i34)
%F = zext i16 %B to i30
; CHECK: %F =
; CHECK-NEXT: (trunc i32 ([[EXPR]]) to i30
%G = zext i16 %B to i32
; CHECK: %G =
; CHECK-NEXT: ([[EXPR]])
%H = zext i16 %B to i34
; CHECK: %H =
; CHECK-NEXT: (zext i32 ([[EXPR]]) to i34)
%I = add i32 %A, 1
%0 = icmp ne i32 %A, 20
br i1 %0, label %loop, label %exit
exit:
ret void
}
define void @test5(i32 %i) {
; CHECK-LABEL: @test5
%A = and i32 %i, 1
; CHECK: --> (zext i1 (trunc i32 %i to i1) to i32)
%B = and i32 %i, 2
; CHECK: --> (2 * (zext i1 (trunc i32 (%i /u 2) to i1) to i32))
%C = and i32 %i, 63
; CHECK: --> (zext i6 (trunc i32 %i to i6) to i32)
%D = and i32 %i, 126
; CHECK: --> (2 * (zext i6 (trunc i32 (%i /u 2) to i6) to i32))
%E = and i32 %i, 64
; CHECK: --> (64 * (zext i1 (trunc i32 (%i /u 64) to i1) to i32))
%F = and i32 %i, -2147483648
; CHECK: --> (-2147483648 * (%i /u -2147483648))
ret void
}
define void @test6(i8 %x) {
; CHECK-LABEL: @test6
%A = zext i8 %x to i16
%B = shl nuw i16 %A, 8
%C = and i16 %B, -2048
; CHECK: --> (2048 * ((zext i8 %x to i16) /u 8))
ret void
}
; PR22960
define void @test7(i32 %A) {
; CHECK-LABEL: @test7
%B = sext i32 %A to i64
%C = zext i32 %A to i64
%D = sub i64 %B, %C
%E = trunc i64 %D to i16
; CHECK: %E
; CHECK-NEXT: --> 0
ret void
}
define i64 @test8(i64 %a) {
; CHECK-LABEL: @test8
%t0 = udiv i64 %a, 56
%t1 = udiv i64 %t0, 56
; CHECK: %t1
; CHECK-NEXT: --> (%a /u 3136)
ret i64 %t1
}
define i64 @test9(i64 %a) {
; CHECK-LABEL: @test9
%t0 = udiv i64 %a, 100000000000000
%t1 = udiv i64 %t0, 100000000000000
; CHECK: %t1
; CHECK-NEXT: --> 0
ret i64 %t1
}
define i64 @test10(i64 %a, i64 %b) {
; CHECK-LABEL: @test10
%t0 = udiv i64 %a, 100000000000000
%t1 = udiv i64 %t0, 100000000000000
%t2 = mul i64 %b, %t1
; CHECK: %t2
; CHECK-NEXT: --> 0
ret i64 %t2
}
|