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Inserting several lit tests to reflect current behaviour

Change-Id: I1b8188dc3c6c7c0f455715364ece7d35ef485f2f
llvm-svn: 320692
This commit is contained in:
Omer Paparo Bivas 2017-12-14 12:00:04 +00:00
parent 0d1bc9bb69
commit 4ff8c46cae
2 changed files with 198 additions and 0 deletions

View File

@ -131,3 +131,91 @@ define i32 @multiuse3(i32 %x) {
ret i32 %10
}
define i32 @multiuse4(i32 %x) local_unnamed_addr #0 {
; CHECK-LABEL: @multiuse4(
; CHECK-NEXT: [[TMP1:%.*]] = and i32 %x, 100663296
; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt i32 %x, -1
; CHECK-NEXT: br i1 [[TMP2]], label %if, label %else
; CHECK: {{.*}}if:{{.*}}
; CHECK-NEXT: [[TMP3:%.*]] = lshr exact i32 [[TMP1]], 22
; CHECK-NEXT: [[TMP4:%.*]] = lshr i32 %x, 22
; CHECK-NEXT: [[TMP5:%.*]] = and i32 [[TMP4]], 480
; CHECK-NEXT: [[TMP6:%.*]] = or i32 [[TMP5]], [[TMP3]]
; CHECK-NEXT: br label %end
; CHECK: {{.*}}else:{{.*}}
; CHECK-NEXT: [[TMP7:%.*]] = lshr exact i32 [[TMP1]], 17
; CHECK-NEXT: [[TMP8:%.*]] = lshr i32 %x, 17
; CHECK-NEXT: [[TMP9:%.*]] = and i32 [[TMP8]], 15360
; CHECK-NEXT: [[TMP10:%.*]] = or i32 [[TMP9]], [[TMP7]]
; CHECK-NEXT: br label %end
; CHECK: {{.*}}end{{.*}}
; CHECK-NEXT: [[TMP11:%.*]] = phi i32 [ [[TMP6]], %if ], [ [[TMP10]], %else ]
; CHECK-NEXT: ret i32 [[TMP11]]
;
%1 = and i32 %x, 100663296
%2 = icmp sgt i32 %x, -1
br i1 %2, label %if, label %else
if:
%3 = lshr exact i32 %1, 22
%4 = lshr i32 %x, 22
%5 = and i32 %4, 480
%6 = or i32 %5, %3
br label %end
else:
%7 = lshr exact i32 %1, 17
%8 = lshr i32 %x, 17
%9 = and i32 %8, 15360
%10 = or i32 %9, %7
br label %end
end:
%11 = phi i32 [ %6, %if ], [ %10, %else ]
ret i32 %11
}
define i32 @multiuse5(i32 %x) local_unnamed_addr #0 {
; CHECK-LABEL: @multiuse5(
; CHECK-NEXT: [[TMP1:%.*]] = shl i32 %x, 5
; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt i32 %x, -1
; CHECK-NEXT: br i1 [[TMP2]], label %if, label %else
; CHECK: {{.*}}if:{{.*}}
; CHECK-NEXT: [[TMP3:%.*]] = and i32 [[TMP1]], 21760
; CHECK-NEXT: [[TMP4:%.*]] = shl i32 %x, 5
; CHECK-NEXT: [[TMP5:%.*]] = and i32 [[TMP4]], 43520
; CHECK-NEXT: [[TMP6:%.*]] = or i32 [[TMP5]], [[TMP3]]
; CHECK-NEXT: br label %end
; CHECK: {{.*}}else:{{.*}}
; CHECK-NEXT: [[TMP7:%.*]] = and i32 [[TMP1]], 5570560
; CHECK-NEXT: [[TMP8:%.*]] = shl i32 %x, 5
; CHECK-NEXT: [[TMP9:%.*]] = and i32 [[TMP8]], 11141120
; CHECK-NEXT: [[TMP10:%.*]] = or i32 [[TMP9]], [[TMP7]]
; CHECK-NEXT: br label %end
; CHECK: {{.*}}end{{.*}}
; CHECK-NEXT: [[TMP11:%.*]] = phi i32 [ [[TMP6]], %if ], [ [[TMP10]], %else ]
; CHECK-NEXT: ret i32 [[TMP11]]
;
%1 = shl i32 %x, 5
%2 = icmp sgt i32 %x, -1
br i1 %2, label %if, label %else
if:
%3 = and i32 %1, 21760
%4 = and i32 %x, 1360
%5 = shl nuw nsw i32 %4, 5
%6 = or i32 %5, %3
br label %end
else:
%7 = and i32 %1, 5570560
%8 = and i32 %x, 348160
%9 = shl nuw nsw i32 %8, 5
%10 = or i32 %9, %7
br label %end
end:
%11 = phi i32 [ %6, %if ], [ %10, %else ]
ret i32 %11
}

View File

@ -0,0 +1,110 @@
; RUN: opt -S -instcombine < %s | FileCheck %s
define i64 @sel_false_val_is_a_masked_shl_of_true_val1(i32 %x, i64 %y) {
; CHECK-LABEL: @sel_false_val_is_a_masked_shl_of_true_val1(
; CHECK-NEXT: [[TMP1:%.*]] = and i32 %x, 15
; CHECK-NEXT: [[TMP2:%.*]] = shl nuw nsw i32 [[TMP1]], 2
; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64
; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i32 [[TMP1]], 0
; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[TMP4]], i64 0, i64 [[TMP3]]
; CHECK-NEXT: [[TMP6:%.*]] = ashr i64 %y, [[TMP5]]
; CHECK-NEXT: ret i64 [[TMP6]]
;
%1 = and i32 %x, 15
%2 = shl nuw nsw i32 %1, 2
%3 = zext i32 %2 to i64
%4 = icmp eq i32 %1, 0
%5 = ashr i64 %y, %3
%6 = select i1 %4, i64 %y, i64 %5
ret i64 %6
}
define i64 @sel_false_val_is_a_masked_shl_of_true_val2(i32 %x, i64 %y) {
; CHECK-LABEL: @sel_false_val_is_a_masked_shl_of_true_val2(
; CHECK-NEXT: [[TMP1:%.*]] = shl i32 %x, 2
; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], 60
; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64
; CHECK-NEXT: [[TMP4:%.*]] = ashr i64 %y, [[TMP3]]
; CHECK-NEXT: ret i64 [[TMP4]]
;
%1 = and i32 %x, 15
%2 = shl nuw nsw i32 %1, 2
%3 = zext i32 %2 to i64
%4 = icmp eq i32 %2, 0
%5 = ashr i64 %y, %3
%6 = select i1 %4, i64 %y, i64 %5
ret i64 %6
}
define i64 @sel_false_val_is_a_masked_lshr_of_true_val1(i32 %x, i64 %y) {
; CHECK-LABEL: @sel_false_val_is_a_masked_lshr_of_true_val1(
; CHECK-NEXT: [[TMP1:%.*]] = and i32 %x, 60
; CHECK-NEXT: [[TMP2:%.*]] = lshr exact i32 [[TMP1]], 2
; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64
; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i32 [[TMP1]], 0
; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[TMP4]], i64 0, i64 [[TMP3]]
; CHECK-NEXT: [[TMP6:%.*]] = ashr i64 %y, [[TMP5]]
; CHECK-NEXT: ret i64 [[TMP6]]
;
%1 = and i32 %x, 60
%2 = lshr i32 %1, 2
%3 = zext i32 %2 to i64
%4 = icmp eq i32 %1, 0
%5 = ashr i64 %y, %3
%6 = select i1 %4, i64 %y, i64 %5
ret i64 %6
}
define i64 @sel_false_val_is_a_masked_lshr_of_true_val2(i32 %x, i64 %y) {
; CHECK-LABEL: @sel_false_val_is_a_masked_lshr_of_true_val2(
; CHECK-NEXT: [[TMP1:%.*]] = lshr i32 %x, 2
; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], 15
; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64
; CHECK-NEXT: [[TMP4:%.*]] = ashr i64 %y, [[TMP3]]
; CHECK-NEXT: ret i64 [[TMP4]]
;
%1 = and i32 %x, 60
%2 = lshr i32 %1, 2
%3 = zext i32 %2 to i64
%4 = icmp eq i32 %2, 0
%5 = ashr i64 %y, %3
%6 = select i1 %4, i64 %y, i64 %5
ret i64 %6
}
define i64 @sel_false_val_is_a_masked_ashr_of_true_val1(i32 %x, i64 %y) {
; CHECK-LABEL: @sel_false_val_is_a_masked_ashr_of_true_val1(
; CHECK-NEXT: [[TMP1:%.*]] = and i32 %x, -2147483588
; CHECK-NEXT: [[TMP2:%.*]] = ashr exact i32 [[TMP1]], 2
; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64
; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i32 [[TMP1]], 0
; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[TMP4]], i64 0, i64 [[TMP3]]
; CHECK-NEXT: [[TMP6:%.*]] = ashr i64 %y, [[TMP5]]
; CHECK-NEXT: ret i64 [[TMP6]]
;
%1 = and i32 %x, -2147483588
%2 = ashr i32 %1, 2
%3 = zext i32 %2 to i64
%4 = icmp eq i32 %1, 0
%5 = ashr i64 %y, %3
%6 = select i1 %4, i64 %y, i64 %5
ret i64 %6
}
define i64 @sel_false_val_is_a_masked_ashr_of_true_val2(i32 %x, i64 %y) {
; CHECK-LABEL: @sel_false_val_is_a_masked_ashr_of_true_val2(
; CHECK-NEXT: [[TMP1:%.*]] = ashr i32 %x, 2
; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], -536870897
; CHECK-NEXT: [[TMP3:%.*]] = zext i32 [[TMP2]] to i64
; CHECK-NEXT: [[TMP4:%.*]] = ashr i64 %y, [[TMP3]]
; CHECK-NEXT: ret i64 [[TMP4]]
;
%1 = and i32 %x, -2147483588
%2 = ashr i32 %1, 2
%3 = zext i32 %2 to i64
%4 = icmp eq i32 %2, 0
%5 = ashr i64 %y, %3
%6 = select i1 %4, i64 %y, i64 %5
ret i64 %6
}