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[CVP] Add tests for saturating add/sub ranges; NFC 

llvm-svn: 361694
This commit is contained in:
Nikita Popov 2019-05-25 09:53:51 +00:00
parent 024b18aca7
commit 9a33dc9fb8
1 changed files with 97 additions and 0 deletions
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97
llvm/test/Transforms/CorrelatedValuePropagation/basic.ll
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@ -986,3 +986,100 @@ exit1:
exit2:
ret i1 %cmp2
}
define i1 @uadd_sat_unknown(i32 %a) {
; CHECK-LABEL: @uadd_sat_unknown(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[VAL:%.*]] = call i32 @llvm.uadd.sat.i32(i32 [[A:%.*]], i32 100)
; CHECK-NEXT: [[CMP1:%.*]] = icmp uge i32 [[VAL]], 100
; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[VAL]], 100
; CHECK-NEXT: br i1 undef, label [[EXIT1:%.*]], label [[EXIT2:%.*]]
; CHECK: exit1:
; CHECK-NEXT: ret i1 [[CMP1]]
; CHECK: exit2:
; CHECK-NEXT: ret i1 [[CMP2]]
;
entry:
%val = call i32 @llvm.uadd.sat.i32(i32 %a, i32 100)
%cmp1 = icmp uge i32 %val, 100
%cmp2 = icmp ugt i32 %val, 100
br i1 undef, label %exit1, label %exit2
exit1:
ret i1 %cmp1
exit2:
ret i1 %cmp2
}
define i1 @usub_sat_unknown(i32 %a) {
; CHECK-LABEL: @usub_sat_unknown(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[VAL:%.*]] = call i32 @llvm.usub.sat.i32(i32 [[A:%.*]], i32 100)
; CHECK-NEXT: [[CMP1:%.*]] = icmp ule i32 [[VAL]], -101
; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[VAL]], -101
; CHECK-NEXT: br i1 undef, label [[EXIT1:%.*]], label [[EXIT2:%.*]]
; CHECK: exit1:
; CHECK-NEXT: ret i1 [[CMP1]]
; CHECK: exit2:
; CHECK-NEXT: ret i1 [[CMP2]]
;
entry:
%val = call i32 @llvm.usub.sat.i32(i32 %a, i32 100)
%cmp1 = icmp ule i32 %val, 4294967195
%cmp2 = icmp ult i32 %val, 4294967195
br i1 undef, label %exit1, label %exit2
exit1:
ret i1 %cmp1
exit2:
ret i1 %cmp2
}
define i1 @sadd_sat_unknown(i32 %a) {
; CHECK-LABEL: @sadd_sat_unknown(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[VAL:%.*]] = call i32 @llvm.sadd.sat.i32(i32 [[A:%.*]], i32 100)
; CHECK-NEXT: [[CMP1:%.*]] = icmp sge i32 [[VAL]], -2147483548
; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[VAL]], -2147483548
; CHECK-NEXT: br i1 undef, label [[EXIT1:%.*]], label [[EXIT2:%.*]]
; CHECK: exit1:
; CHECK-NEXT: ret i1 [[CMP1]]
; CHECK: exit2:
; CHECK-NEXT: ret i1 [[CMP2]]
;
entry:
%val = call i32 @llvm.sadd.sat.i32(i32 %a, i32 100)
%cmp1 = icmp sge i32 %val, -2147483548
%cmp2 = icmp sgt i32 %val, -2147483548
br i1 undef, label %exit1, label %exit2
exit1:
ret i1 %cmp1
exit2:
ret i1 %cmp2
}
define i1 @ssub_sat_unknown(i32 %a) {
; CHECK-LABEL: @ssub_sat_unknown(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[VAL:%.*]] = call i32 @llvm.ssub.sat.i32(i32 [[A:%.*]], i32 100)
; CHECK-NEXT: [[CMP1:%.*]] = icmp sle i32 [[VAL]], 2147483547
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[VAL]], 2147483547
; CHECK-NEXT: br i1 undef, label [[EXIT1:%.*]], label [[EXIT2:%.*]]
; CHECK: exit1:
; CHECK-NEXT: ret i1 [[CMP1]]
; CHECK: exit2:
; CHECK-NEXT: ret i1 [[CMP2]]
;
entry:
%val = call i32 @llvm.ssub.sat.i32(i32 %a, i32 100)
%cmp1 = icmp sle i32 %val, 2147483547
%cmp2 = icmp slt i32 %val, 2147483547
br i1 undef, label %exit1, label %exit2
exit1:
ret i1 %cmp1
exit2:
ret i1 %cmp2
}
declare i32 @llvm.uadd.sat.i32(i32, i32)
declare i32 @llvm.usub.sat.i32(i32, i32)
declare i32 @llvm.sadd.sat.i32(i32, i32)
declare i32 @llvm.ssub.sat.i32(i32, i32)