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add tests related to PR28466

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llvm-svn: 275995
This commit is contained in:
Sanjay Patel 2016-07-19 17:07:35 +00:00
parent 2987170664
commit 4a78584835
1 changed files with 60 additions and 1 deletions
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61
test/Transforms/InstSimplify/select.ll
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@ -132,7 +132,21 @@ define i32 @select_icmp_and_8_eq_0_or_8(i32 %x) {
}
; PR28466: https://llvm.org/bugs/show_bug.cgi?id=28466
; InstSimplify needs to recognize variations of this pattern.
define i32 @select_icmp_trunc_8_eq_0_or_8(i32 %x) {
; CHECK-LABEL: @select_icmp_trunc_8_eq_0_or_8(
; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 %x to i8
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[TRUNC]], 0
; CHECK-NEXT: [[OR:%.*]] = or i32 %x, 128
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 [[OR]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
;
%trunc = trunc i32 %x to i8
%cmp = icmp slt i8 %trunc, 0
%or = or i32 %x, 128
%sel = select i1 %cmp, i32 %or, i32 %x
ret i32 %sel
}
define i32 @select_icmp_and_8_ne_0_or_128(i32 %x) {
; CHECK-LABEL: @select_icmp_and_8_ne_0_or_128(
@ -145,6 +159,21 @@ define i32 @select_icmp_and_8_ne_0_or_128(i32 %x) {
ret i32 %or.x
}
define i32 @select_icmp_trunc_8_ne_0_or_128(i32 %x) {
; CHECK-LABEL: @select_icmp_trunc_8_ne_0_or_128(
; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 %x to i8
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[TRUNC]], 0
; CHECK-NEXT: [[OR:%.*]] = or i32 %x, 128
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 %x, i32 [[OR]]
; CHECK-NEXT: ret i32 [[SEL]]
;
%trunc = trunc i32 %x to i8
%cmp = icmp slt i8 %trunc, 0
%or = or i32 %x, 128
%sel = select i1 %cmp, i32 %x, i32 %or
ret i32 %sel
}
define i32 @select_icmp_and_8_ne_0_and_not_8(i32 %x) {
; CHECK-LABEL: @select_icmp_and_8_ne_0_and_not_8(
; CHECK-NEXT: [[AND1:%.*]] = and i32 %x, -9
@ -157,6 +186,21 @@ define i32 @select_icmp_and_8_ne_0_and_not_8(i32 %x) {
ret i32 %x.and1
}
define i32 @select_icmp_trunc_8_ne_0_and_not_8(i32 %x) {
; CHECK-LABEL: @select_icmp_trunc_8_ne_0_and_not_8(
; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 %x to i4
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i4 [[TRUNC]], 0
; CHECK-NEXT: [[AND:%.*]] = and i32 %x, -9
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 %x, i32 [[AND]]
; CHECK-NEXT: ret i32 [[SEL]]
;
%trunc = trunc i32 %x to i4
%cmp = icmp slt i4 %trunc, 0
%and = and i32 %x, -9
%sel = select i1 %cmp, i32 %x, i32 %and
ret i32 %sel
}
define i32 @select_icmp_and_8_eq_0_and_not_8(i32 %x) {
; CHECK-LABEL: @select_icmp_and_8_eq_0_and_not_8(
; CHECK-NEXT: ret i32 %x
@ -168,6 +212,21 @@ define i32 @select_icmp_and_8_eq_0_and_not_8(i32 %x) {
ret i32 %and1.x
}
define i32 @select_icmp_trunc_8_eq_0_and_not_8(i32 %x) {
; CHECK-LABEL: @select_icmp_trunc_8_eq_0_and_not_8(
; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 %x to i4
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i4 [[TRUNC]], 0
; CHECK-NEXT: [[AND:%.*]] = and i32 %x, -9
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 [[AND]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
;
%trunc = trunc i32 %x to i4
%cmp = icmp slt i4 %trunc, 0
%and = and i32 %x, -9
%sel = select i1 %cmp, i32 %and, i32 %x
ret i32 %sel
}
define i64 @select_icmp_x_and_8_eq_0_y_and_not_8(i32 %x, i64 %y) {
; CHECK-LABEL: @select_icmp_x_and_8_eq_0_y_and_not_8(
; CHECK-NEXT: [[AND:%.*]] = and i32 %x, 8