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| ; RUN: opt < %s -correlated-propagation -S | FileCheck %s
; CHECK-LABEL: @test_nop
define void @test_nop(i32 %n) {
; CHECK udiv i32 %n, 100
%div = udiv i32 %n, 100
ret void
}
; CHECK-LABEL: @test1(
define void @test1(i32 %n) {
entry:
%cmp = icmp ule i32 %n, 65535
br i1 %cmp, label %bb, label %exit
bb:
; CHECK: urem i16
%div = urem i32 %n, 100
br label %exit
exit:
ret void
}
; CHECK-LABEL: @test2(
define void @test2(i32 %n) {
entry:
%cmp = icmp ule i32 %n, 65536
br i1 %cmp, label %bb, label %exit
bb:
; CHECK: urem i32 %n, 100
%div = urem i32 %n, 100
br label %exit
exit:
ret void
}
; CHECK-LABEL: @test3(
define void @test3(i32 %m, i32 %n) {
entry:
%cmp1 = icmp ult i32 %m, 65535
%cmp2 = icmp ult i32 %n, 65535
%cmp = and i1 %cmp1, %cmp2
br i1 %cmp, label %bb, label %exit
bb:
; CHECK: urem i16
%div = urem i32 %m, %n
br label %exit
exit:
ret void
}
; CHECK-LABEL: @test4(
define void @test4(i32 %m, i32 %n) {
entry:
%cmp1 = icmp ult i32 %m, 65535
%cmp2 = icmp ule i32 %n, 65536
%cmp = and i1 %cmp1, %cmp2
br i1 %cmp, label %bb, label %exit
bb:
; CHECK: urem i32 %m, %n
%div = urem i32 %m, %n
br label %exit
exit:
ret void
}
; CHECK-LABEL: @test5
define void @test5(i32 %n) {
%trunc = and i32 %n, 63
; CHECK: urem i8
%div = urem i32 %trunc, 42
ret void
}
; CHECK-LABEL: @test6
define void @test6(i32 %n) {
entry:
%cmp = icmp ule i32 %n, 255
br i1 %cmp, label %bb, label %exit
bb:
; CHECK: urem i8
%div = srem i32 %n, 100
br label %exit
exit:
ret void
}
; CHECK-LABEL: @non_power_of_2
define void @non_power_of_2(i24 %n) {
%div = urem i24 %n, 42
ret void
}
|