mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 20:29:48 +00:00
c53401ee91
This patch fixes a bug in method InstCombiner::FoldCmpCstShrCst where we wrongly computed the distance between the highest bits set of two negative values. This fixes PR21222. Differential Revision: http://reviews.llvm.org/D5700 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219406 91177308-0d34-0410-b5e6-96231b3b80d8
699 lines
16 KiB
LLVM
699 lines
16 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
target datalayout = "e-p:64:64:64-p1:16:16:16-p2:32:32:32-p3:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
|
|
|
|
; CHECK-LABEL: @exact_lshr_eq_both_zero
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @exact_lshr_eq_both_zero(i8 %a) {
|
|
%shr = lshr exact i8 0, %a
|
|
%cmp = icmp eq i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_eq_both_zero
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @exact_ashr_eq_both_zero(i8 %a) {
|
|
%shr = ashr exact i8 0, %a
|
|
%cmp = icmp eq i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_eq_both_zero
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @nonexact_lshr_eq_both_zero(i8 %a) {
|
|
%shr = lshr i8 0, %a
|
|
%cmp = icmp eq i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_eq_both_zero
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @nonexact_ashr_eq_both_zero(i8 %a) {
|
|
%shr = ashr i8 0, %a
|
|
%cmp = icmp eq i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_ne_both_zero
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @exact_lshr_ne_both_zero(i8 %a) {
|
|
%shr = lshr exact i8 0, %a
|
|
%cmp = icmp ne i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_ne_both_zero
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @exact_ashr_ne_both_zero(i8 %a) {
|
|
%shr = ashr exact i8 0, %a
|
|
%cmp = icmp ne i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_ne_both_zero
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @nonexact_lshr_ne_both_zero(i8 %a) {
|
|
%shr = lshr i8 0, %a
|
|
%cmp = icmp ne i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_ne_both_zero
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @nonexact_ashr_ne_both_zero(i8 %a) {
|
|
%shr = ashr i8 0, %a
|
|
%cmp = icmp ne i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_eq_last_zero
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @exact_lshr_eq_last_zero(i8 %a) {
|
|
%shr = lshr exact i8 128, %a
|
|
%cmp = icmp eq i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_eq_last_zero
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @exact_ashr_eq_last_zero(i8 %a) {
|
|
%shr = ashr exact i8 -128, %a
|
|
%cmp = icmp eq i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_ne_last_zero
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @exact_lshr_ne_last_zero(i8 %a) {
|
|
%shr = lshr exact i8 128, %a
|
|
%cmp = icmp ne i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_ne_last_zero
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @exact_ashr_ne_last_zero(i8 %a) {
|
|
%shr = ashr exact i8 -128, %a
|
|
%cmp = icmp ne i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_eq_last_zero
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @nonexact_lshr_eq_last_zero(i8 %a) {
|
|
%shr = lshr i8 128, %a
|
|
%cmp = icmp eq i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_eq_last_zero
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @nonexact_ashr_eq_last_zero(i8 %a) {
|
|
%shr = ashr i8 -128, %a
|
|
%cmp = icmp eq i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_ne_last_zero
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @nonexact_lshr_ne_last_zero(i8 %a) {
|
|
%shr = lshr i8 128, %a
|
|
%cmp = icmp ne i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_ne_last_zero
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @nonexact_ashr_ne_last_zero(i8 %a) {
|
|
%shr = ashr i8 -128, %a
|
|
%cmp = icmp ne i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @lshr_eq_msb_low_last_zero
|
|
; CHECK-NEXT: icmp ugt i8 %a, 6
|
|
define i1 @lshr_eq_msb_low_last_zero(i8 %a) {
|
|
%shr = lshr i8 127, %a
|
|
%cmp = icmp eq i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @ashr_eq_msb_low_second_zero
|
|
; CHECK-NEXT: icmp ugt i8 %a, 6
|
|
define i1 @ashr_eq_msb_low_second_zero(i8 %a) {
|
|
%shr = ashr i8 127, %a
|
|
%cmp = icmp eq i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @lshr_ne_msb_low_last_zero
|
|
; CHECK-NEXT: icmp ult i8 %a, 7
|
|
define i1 @lshr_ne_msb_low_last_zero(i8 %a) {
|
|
%shr = lshr i8 127, %a
|
|
%cmp = icmp ne i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @ashr_ne_msb_low_second_zero
|
|
; CHECK-NEXT: icmp ult i8 %a, 7
|
|
define i1 @ashr_ne_msb_low_second_zero(i8 %a) {
|
|
%shr = ashr i8 127, %a
|
|
%cmp = icmp ne i8 %shr, 0
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @lshr_eq_first_zero
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @lshr_eq_first_zero(i8 %a) {
|
|
%shr = lshr i8 0, %a
|
|
%cmp = icmp eq i8 %shr, 2
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @ashr_eq_first_zero
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @ashr_eq_first_zero(i8 %a) {
|
|
%shr = ashr i8 0, %a
|
|
%cmp = icmp eq i8 %shr, 2
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @lshr_ne_first_zero
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @lshr_ne_first_zero(i8 %a) {
|
|
%shr = lshr i8 0, %a
|
|
%cmp = icmp ne i8 %shr, 2
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @ashr_ne_first_zero
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @ashr_ne_first_zero(i8 %a) {
|
|
%shr = ashr i8 0, %a
|
|
%cmp = icmp ne i8 %shr, 2
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @ashr_eq_both_minus1
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @ashr_eq_both_minus1(i8 %a) {
|
|
%shr = ashr i8 -1, %a
|
|
%cmp = icmp eq i8 %shr, -1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @ashr_ne_both_minus1
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @ashr_ne_both_minus1(i8 %a) {
|
|
%shr = ashr i8 -1, %a
|
|
%cmp = icmp ne i8 %shr, -1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_eq_both_minus1
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @exact_ashr_eq_both_minus1(i8 %a) {
|
|
%shr = ashr exact i8 -1, %a
|
|
%cmp = icmp eq i8 %shr, -1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_ne_both_minus1
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @exact_ashr_ne_both_minus1(i8 %a) {
|
|
%shr = ashr exact i8 -1, %a
|
|
%cmp = icmp ne i8 %shr, -1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @ashr_eq_both_equal
|
|
; CHECK-NEXT: icmp eq i8 %a, 0
|
|
define i1 @ashr_eq_both_equal(i8 %a) {
|
|
%shr = ashr i8 128, %a
|
|
%cmp = icmp eq i8 %shr, 128
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @ashr_ne_both_equal
|
|
; CHECK-NEXT: icmp ne i8 %a, 0
|
|
define i1 @ashr_ne_both_equal(i8 %a) {
|
|
%shr = ashr i8 128, %a
|
|
%cmp = icmp ne i8 %shr, 128
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @lshr_eq_both_equal
|
|
; CHECK-NEXT: icmp eq i8 %a, 0
|
|
define i1 @lshr_eq_both_equal(i8 %a) {
|
|
%shr = lshr i8 127, %a
|
|
%cmp = icmp eq i8 %shr, 127
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @lshr_ne_both_equal
|
|
; CHECK-NEXT: icmp ne i8 %a, 0
|
|
define i1 @lshr_ne_both_equal(i8 %a) {
|
|
%shr = lshr i8 127, %a
|
|
%cmp = icmp ne i8 %shr, 127
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_eq_both_equal
|
|
; CHECK-NEXT: icmp eq i8 %a, 0
|
|
define i1 @exact_ashr_eq_both_equal(i8 %a) {
|
|
%shr = ashr exact i8 128, %a
|
|
%cmp = icmp eq i8 %shr, 128
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_ne_both_equal
|
|
; CHECK-NEXT: icmp ne i8 %a, 0
|
|
define i1 @exact_ashr_ne_both_equal(i8 %a) {
|
|
%shr = ashr exact i8 128, %a
|
|
%cmp = icmp ne i8 %shr, 128
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_eq_both_equal
|
|
; CHECK-NEXT: icmp eq i8 %a, 0
|
|
define i1 @exact_lshr_eq_both_equal(i8 %a) {
|
|
%shr = lshr exact i8 126, %a
|
|
%cmp = icmp eq i8 %shr, 126
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_ne_both_equal
|
|
; CHECK-NEXT: icmp ne i8 %a, 0
|
|
define i1 @exact_lshr_ne_both_equal(i8 %a) {
|
|
%shr = lshr exact i8 126, %a
|
|
%cmp = icmp ne i8 %shr, 126
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_eq_opposite_msb
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @exact_ashr_eq_opposite_msb(i8 %a) {
|
|
%shr = ashr exact i8 -128, %a
|
|
%cmp = icmp eq i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @ashr_eq_opposite_msb
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @ashr_eq_opposite_msb(i8 %a) {
|
|
%shr = ashr i8 -128, %a
|
|
%cmp = icmp eq i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_eq_opposite_msb
|
|
; CHECK-NEXT: icmp eq i8 %a, 7
|
|
define i1 @exact_lshr_eq_opposite_msb(i8 %a) {
|
|
%shr = lshr exact i8 -128, %a
|
|
%cmp = icmp eq i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @lshr_eq_opposite_msb
|
|
; CHECK-NEXT: icmp eq i8 %a, 7
|
|
define i1 @lshr_eq_opposite_msb(i8 %a) {
|
|
%shr = lshr i8 -128, %a
|
|
%cmp = icmp eq i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_ne_opposite_msb
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @exact_ashr_ne_opposite_msb(i8 %a) {
|
|
%shr = ashr exact i8 -128, %a
|
|
%cmp = icmp ne i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @ashr_ne_opposite_msb
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @ashr_ne_opposite_msb(i8 %a) {
|
|
%shr = ashr i8 -128, %a
|
|
%cmp = icmp ne i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_ne_opposite_msb
|
|
; CHECK-NEXT: icmp ne i8 %a, 7
|
|
define i1 @exact_lshr_ne_opposite_msb(i8 %a) {
|
|
%shr = lshr exact i8 -128, %a
|
|
%cmp = icmp ne i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @lshr_ne_opposite_msb
|
|
; CHECK-NEXT: icmp ne i8 %a, 7
|
|
define i1 @lshr_ne_opposite_msb(i8 %a) {
|
|
%shr = lshr i8 -128, %a
|
|
%cmp = icmp ne i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_eq_shift_gt
|
|
; CHECK-NEXT : ret i1 false
|
|
define i1 @exact_ashr_eq_shift_gt(i8 %a) {
|
|
%shr = ashr exact i8 -2, %a
|
|
%cmp = icmp eq i8 %shr, -8
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_ne_shift_gt
|
|
; CHECK-NEXT : ret i1 true
|
|
define i1 @exact_ashr_ne_shift_gt(i8 %a) {
|
|
%shr = ashr exact i8 -2, %a
|
|
%cmp = icmp ne i8 %shr, -8
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_eq_shift_gt
|
|
; CHECK-NEXT : ret i1 false
|
|
define i1 @nonexact_ashr_eq_shift_gt(i8 %a) {
|
|
%shr = ashr i8 -2, %a
|
|
%cmp = icmp eq i8 %shr, -8
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_ne_shift_gt
|
|
; CHECK-NEXT : ret i1 true
|
|
define i1 @nonexact_ashr_ne_shift_gt(i8 %a) {
|
|
%shr = ashr i8 -2, %a
|
|
%cmp = icmp ne i8 %shr, -8
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_eq_shift_gt
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @exact_lshr_eq_shift_gt(i8 %a) {
|
|
%shr = lshr exact i8 2, %a
|
|
%cmp = icmp eq i8 %shr, 8
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_ne_shift_gt
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @exact_lshr_ne_shift_gt(i8 %a) {
|
|
%shr = lshr exact i8 2, %a
|
|
%cmp = icmp ne i8 %shr, 8
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_eq_shift_gt
|
|
; CHECK-NEXT : ret i1 false
|
|
define i1 @nonexact_lshr_eq_shift_gt(i8 %a) {
|
|
%shr = lshr i8 2, %a
|
|
%cmp = icmp eq i8 %shr, 8
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_ne_shift_gt
|
|
; CHECK-NEXT : ret i1 true
|
|
define i1 @nonexact_lshr_ne_shift_gt(i8 %a) {
|
|
%shr = ashr i8 2, %a
|
|
%cmp = icmp ne i8 %shr, 8
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_eq
|
|
; CHECK-NEXT: icmp eq i8 %a, 7
|
|
define i1 @exact_ashr_eq(i8 %a) {
|
|
%shr = ashr exact i8 -128, %a
|
|
%cmp = icmp eq i8 %shr, -1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_ne
|
|
; CHECK-NEXT: icmp ne i8 %a, 7
|
|
define i1 @exact_ashr_ne(i8 %a) {
|
|
%shr = ashr exact i8 -128, %a
|
|
%cmp = icmp ne i8 %shr, -1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_eq
|
|
; CHECK-NEXT: icmp eq i8 %a, 2
|
|
define i1 @exact_lshr_eq(i8 %a) {
|
|
%shr = lshr exact i8 4, %a
|
|
%cmp = icmp eq i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_ne
|
|
; CHECK-NEXT: icmp ne i8 %a, 2
|
|
define i1 @exact_lshr_ne(i8 %a) {
|
|
%shr = lshr exact i8 4, %a
|
|
%cmp = icmp ne i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_eq
|
|
; CHECK-NEXT: icmp eq i8 %a, 7
|
|
define i1 @nonexact_ashr_eq(i8 %a) {
|
|
%shr = ashr i8 -128, %a
|
|
%cmp = icmp eq i8 %shr, -1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_ne
|
|
; CHECK-NEXT: icmp ne i8 %a, 7
|
|
define i1 @nonexact_ashr_ne(i8 %a) {
|
|
%shr = ashr i8 -128, %a
|
|
%cmp = icmp ne i8 %shr, -1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_eq
|
|
; CHECK-NEXT: icmp eq i8 %a, 2
|
|
define i1 @nonexact_lshr_eq(i8 %a) {
|
|
%shr = lshr i8 4, %a
|
|
%cmp = icmp eq i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_ne
|
|
; CHECK-NEXT: icmp ne i8 %a, 2
|
|
define i1 @nonexact_lshr_ne(i8 %a) {
|
|
%shr = lshr i8 4, %a
|
|
%cmp = icmp ne i8 %shr, 1
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_eq_exactdiv
|
|
; CHECK-NEXT: icmp eq i8 %a, 4
|
|
define i1 @exact_lshr_eq_exactdiv(i8 %a) {
|
|
%shr = lshr exact i8 80, %a
|
|
%cmp = icmp eq i8 %shr, 5
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_ne_exactdiv
|
|
; CHECK-NEXT: icmp ne i8 %a, 4
|
|
define i1 @exact_lshr_ne_exactdiv(i8 %a) {
|
|
%shr = lshr exact i8 80, %a
|
|
%cmp = icmp ne i8 %shr, 5
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_eq_exactdiv
|
|
; CHECK-NEXT: icmp eq i8 %a, 4
|
|
define i1 @nonexact_lshr_eq_exactdiv(i8 %a) {
|
|
%shr = lshr i8 80, %a
|
|
%cmp = icmp eq i8 %shr, 5
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_ne_exactdiv
|
|
; CHECK-NEXT: icmp ne i8 %a, 4
|
|
define i1 @nonexact_lshr_ne_exactdiv(i8 %a) {
|
|
%shr = lshr i8 80, %a
|
|
%cmp = icmp ne i8 %shr, 5
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_eq_exactdiv
|
|
; CHECK-NEXT: icmp eq i8 %a, 4
|
|
define i1 @exact_ashr_eq_exactdiv(i8 %a) {
|
|
%shr = ashr exact i8 -80, %a
|
|
%cmp = icmp eq i8 %shr, -5
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_ne_exactdiv
|
|
; CHECK-NEXT: icmp ne i8 %a, 4
|
|
define i1 @exact_ashr_ne_exactdiv(i8 %a) {
|
|
%shr = ashr exact i8 -80, %a
|
|
%cmp = icmp ne i8 %shr, -5
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_eq_exactdiv
|
|
; CHECK-NEXT: icmp eq i8 %a, 4
|
|
define i1 @nonexact_ashr_eq_exactdiv(i8 %a) {
|
|
%shr = ashr i8 -80, %a
|
|
%cmp = icmp eq i8 %shr, -5
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_ne_exactdiv
|
|
; CHECK-NEXT: icmp ne i8 %a, 4
|
|
define i1 @nonexact_ashr_ne_exactdiv(i8 %a) {
|
|
%shr = ashr i8 -80, %a
|
|
%cmp = icmp ne i8 %shr, -5
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_eq_noexactdiv
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @exact_lshr_eq_noexactdiv(i8 %a) {
|
|
%shr = lshr exact i8 80, %a
|
|
%cmp = icmp eq i8 %shr, 31
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_ne_noexactdiv
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @exact_lshr_ne_noexactdiv(i8 %a) {
|
|
%shr = lshr exact i8 80, %a
|
|
%cmp = icmp ne i8 %shr, 31
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_eq_noexactdiv
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @nonexact_lshr_eq_noexactdiv(i8 %a) {
|
|
%shr = lshr i8 80, %a
|
|
%cmp = icmp eq i8 %shr, 31
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_ne_noexactdiv
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @nonexact_lshr_ne_noexactdiv(i8 %a) {
|
|
%shr = lshr i8 80, %a
|
|
%cmp = icmp ne i8 %shr, 31
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_eq_noexactdiv
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @exact_ashr_eq_noexactdiv(i8 %a) {
|
|
%shr = ashr exact i8 -80, %a
|
|
%cmp = icmp eq i8 %shr, -31
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_ne_noexactdiv
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @exact_ashr_ne_noexactdiv(i8 %a) {
|
|
%shr = ashr exact i8 -80, %a
|
|
%cmp = icmp ne i8 %shr, -31
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_eq_noexactdiv
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @nonexact_ashr_eq_noexactdiv(i8 %a) {
|
|
%shr = ashr i8 -80, %a
|
|
%cmp = icmp eq i8 %shr, -31
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_ne_noexactdiv
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @nonexact_ashr_ne_noexactdiv(i8 %a) {
|
|
%shr = ashr i8 -80, %a
|
|
%cmp = icmp ne i8 %shr, -31
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_eq_noexactlog
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @exact_lshr_eq_noexactlog(i8 %a) {
|
|
%shr = lshr exact i8 90, %a
|
|
%cmp = icmp eq i8 %shr, 30
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_lshr_ne_noexactlog
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @exact_lshr_ne_noexactlog(i8 %a) {
|
|
%shr = lshr exact i8 90, %a
|
|
%cmp = icmp ne i8 %shr, 30
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_eq_noexactlog
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @nonexact_lshr_eq_noexactlog(i8 %a) {
|
|
%shr = lshr i8 90, %a
|
|
%cmp = icmp eq i8 %shr, 30
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_lshr_ne_noexactlog
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @nonexact_lshr_ne_noexactlog(i8 %a) {
|
|
%shr = lshr i8 90, %a
|
|
%cmp = icmp ne i8 %shr, 30
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_eq_noexactlog
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @exact_ashr_eq_noexactlog(i8 %a) {
|
|
%shr = ashr exact i8 -90, %a
|
|
%cmp = icmp eq i8 %shr, -30
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @exact_ashr_ne_noexactlog
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @exact_ashr_ne_noexactlog(i8 %a) {
|
|
%shr = ashr exact i8 -90, %a
|
|
%cmp = icmp ne i8 %shr, -30
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_eq_noexactlog
|
|
; CHECK-NEXT: ret i1 false
|
|
define i1 @nonexact_ashr_eq_noexactlog(i8 %a) {
|
|
%shr = ashr i8 -90, %a
|
|
%cmp = icmp eq i8 %shr, -30
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @nonexact_ashr_ne_noexactlog
|
|
; CHECK-NEXT: ret i1 true
|
|
define i1 @nonexact_ashr_ne_noexactlog(i8 %a) {
|
|
%shr = ashr i8 -90, %a
|
|
%cmp = icmp ne i8 %shr, -30
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; Don't try to fold the entire body of function @PR20945 into a
|
|
; single `ret i1 true` statement.
|
|
; If %B is equal to 1, then this function would return false.
|
|
; As a consequence, the instruction combiner is not allowed to fold %cmp
|
|
; to 'true'. Instead, it should replace %cmp with a simpler comparison
|
|
; between %B and 1.
|
|
|
|
; CHECK-LABEL: @PR20945(
|
|
; CHECK: icmp ne i32 %B, 1
|
|
define i1 @PR20945(i32 %B) {
|
|
%shr = ashr i32 -9, %B
|
|
%cmp = icmp ne i32 %shr, -5
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; CHECK-LABEL: @PR21222
|
|
; CHECK: icmp eq i32 %B, 6
|
|
define i1 @PR21222(i32 %B) {
|
|
%shr = ashr i32 -93, %B
|
|
%cmp = icmp eq i32 %shr, -2
|
|
ret i1 %cmp
|
|
}
|