[InstCombine] Move with.overflow tests to separate file; NFC

And regenerate checks. I had to rename some variables, because
update_test_checks can't deal with the same variable names used
in lower and upper case. I've also dropped the result type aliases,
as just using the type directly gives a cleaner result.

llvm-svn: 354759
This commit is contained in:
Nikita Popov 2019-02-24 21:55:31 +00:00
parent f43c48cb52
commit bdefe47857
2 changed files with 347 additions and 303 deletions

View File

@ -1,18 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine -S < %s | FileCheck %s
%overflow.result = type {i8, i1}
%ov.result.32 = type { i32, i1 }
declare %overflow.result @llvm.uadd.with.overflow.i8(i8, i8) nounwind readnone
declare %overflow.result @llvm.umul.with.overflow.i8(i8, i8) nounwind readnone
declare %ov.result.32 @llvm.sadd.with.overflow.i32(i32, i32) nounwind readnone
declare %ov.result.32 @llvm.uadd.with.overflow.i32(i32, i32) nounwind readnone
declare %ov.result.32 @llvm.ssub.with.overflow.i32(i32, i32) nounwind readnone
declare %ov.result.32 @llvm.usub.with.overflow.i32(i32, i32) nounwind readnone
declare %ov.result.32 @llvm.smul.with.overflow.i32(i32, i32) nounwind readnone
declare %ov.result.32 @llvm.umul.with.overflow.i32(i32, i32) nounwind readnone
declare double @llvm.powi.f64(double, i32) nounwind readonly
declare i32 @llvm.cttz.i32(i32, i1) nounwind readnone
declare i32 @llvm.ctlz.i32(i32, i1) nounwind readnone
@ -32,232 +20,6 @@ declare double @llvm.trunc.f64(double %Val) nounwind readonly
declare double @llvm.rint.f64(double %Val) nounwind readonly
declare double @llvm.nearbyint.f64(double %Val) nounwind readonly
define i8 @uaddtest1(i8 %A, i8 %B) {
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 %A, i8 %B)
%y = extractvalue %overflow.result %x, 0
ret i8 %y
; CHECK-LABEL: @uaddtest1(
; CHECK-NEXT: %y = add i8 %A, %B
; CHECK-NEXT: ret i8 %y
}
define i8 @uaddtest2(i8 %A, i8 %B, i1* %overflowPtr) {
%and.A = and i8 %A, 127
%and.B = and i8 %B, 127
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 %and.A, i8 %and.B)
%y = extractvalue %overflow.result %x, 0
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK-LABEL: @uaddtest2(
; CHECK-NEXT: %and.A = and i8 %A, 127
; CHECK-NEXT: %and.B = and i8 %B, 127
; CHECK-NEXT: %x = add nuw i8 %and.A, %and.B
; CHECK-NEXT: store i1 false, i1* %overflowPtr
; CHECK-NEXT: ret i8 %x
}
define i8 @uaddtest3(i8 %A, i8 %B, i1* %overflowPtr) {
%or.A = or i8 %A, -128
%or.B = or i8 %B, -128
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 %or.A, i8 %or.B)
%y = extractvalue %overflow.result %x, 0
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK-LABEL: @uaddtest3(
; CHECK-NEXT: %or.A = or i8 %A, -128
; CHECK-NEXT: %or.B = or i8 %B, -128
; CHECK-NEXT: %x = add i8 %or.A, %or.B
; CHECK-NEXT: store i1 true, i1* %overflowPtr
; CHECK-NEXT: ret i8 %x
}
define i8 @uaddtest4(i8 %A, i1* %overflowPtr) {
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 undef, i8 %A)
%y = extractvalue %overflow.result %x, 0
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK-LABEL: @uaddtest4(
; CHECK-NEXT: ret i8 undef
}
define i8 @uaddtest5(i8 %A, i1* %overflowPtr) {
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 0, i8 %A)
%y = extractvalue %overflow.result %x, 0
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK-LABEL: @uaddtest5(
; CHECK: ret i8 %A
}
define i1 @uaddtest6(i8 %A, i8 %B) {
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 %A, i8 -4)
%z = extractvalue %overflow.result %x, 1
ret i1 %z
; CHECK-LABEL: @uaddtest6(
; CHECK-NEXT: %z = icmp ugt i8 %A, 3
; CHECK-NEXT: ret i1 %z
}
define i8 @uaddtest7(i8 %A, i8 %B) {
%x = call %overflow.result @llvm.uadd.with.overflow.i8(i8 %A, i8 %B)
%z = extractvalue %overflow.result %x, 0
ret i8 %z
; CHECK-LABEL: @uaddtest7(
; CHECK-NEXT: %z = add i8 %A, %B
; CHECK-NEXT: ret i8 %z
}
; PR20194
define %ov.result.32 @saddtest_nsw(i8 %a, i8 %b) {
%A = sext i8 %a to i32
%B = sext i8 %b to i32
%x = call %ov.result.32 @llvm.sadd.with.overflow.i32(i32 %A, i32 %B)
ret %ov.result.32 %x
; CHECK-LABEL: @saddtest_nsw
; CHECK: %x = add nsw i32 %A, %B
; CHECK-NEXT: %1 = insertvalue %ov.result.32 { i32 undef, i1 false }, i32 %x, 0
; CHECK-NEXT: ret %ov.result.32 %1
}
define %ov.result.32 @uaddtest_nuw(i32 %a, i32 %b) {
%A = and i32 %a, 2147483647
%B = and i32 %b, 2147483647
%x = call %ov.result.32 @llvm.uadd.with.overflow.i32(i32 %A, i32 %B)
ret %ov.result.32 %x
; CHECK-LABEL: @uaddtest_nuw
; CHECK: %x = add nuw i32 %A, %B
; CHECK-NEXT: %1 = insertvalue %ov.result.32 { i32 undef, i1 false }, i32 %x, 0
; CHECK-NEXT: ret %ov.result.32 %1
}
define %ov.result.32 @ssubtest_nsw(i8 %a, i8 %b) {
%A = sext i8 %a to i32
%B = sext i8 %b to i32
%x = call %ov.result.32 @llvm.ssub.with.overflow.i32(i32 %A, i32 %B)
ret %ov.result.32 %x
; CHECK-LABEL: @ssubtest_nsw
; CHECK: %x = sub nsw i32 %A, %B
; CHECK-NEXT: %1 = insertvalue %ov.result.32 { i32 undef, i1 false }, i32 %x, 0
; CHECK-NEXT: ret %ov.result.32 %1
}
define %ov.result.32 @usubtest_nuw(i32 %a, i32 %b) {
%A = or i32 %a, 2147483648
%B = and i32 %b, 2147483647
%x = call %ov.result.32 @llvm.usub.with.overflow.i32(i32 %A, i32 %B)
ret %ov.result.32 %x
; CHECK-LABEL: @usubtest_nuw
; CHECK: %x = sub nuw i32 %A, %B
; CHECK-NEXT: %1 = insertvalue %ov.result.32 { i32 undef, i1 false }, i32 %x, 0
; CHECK-NEXT: ret %ov.result.32 %1
}
define %ov.result.32 @smultest1_nsw(i32 %a, i32 %b) {
%A = and i32 %a, 4095 ; 0xfff
%B = and i32 %b, 524287; 0x7ffff
%x = call %ov.result.32 @llvm.smul.with.overflow.i32(i32 %A, i32 %B)
ret %ov.result.32 %x
; CHECK-LABEL: @smultest1_nsw
; CHECK: %x = mul nuw nsw i32 %A, %B
; CHECK-NEXT: %1 = insertvalue %ov.result.32 { i32 undef, i1 false }, i32 %x, 0
; CHECK-NEXT: ret %ov.result.32 %1
}
define %ov.result.32 @smultest2_nsw(i32 %a, i32 %b) {
%A = ashr i32 %a, 16
%B = ashr i32 %b, 16
%x = call %ov.result.32 @llvm.smul.with.overflow.i32(i32 %A, i32 %B)
ret %ov.result.32 %x
; CHECK-LABEL: @smultest2_nsw
; CHECK: %x = mul nsw i32 %A, %B
; CHECK-NEXT: %1 = insertvalue %ov.result.32 { i32 undef, i1 false }, i32 %x, 0
; CHECK-NEXT: ret %ov.result.32 %1
}
define %ov.result.32 @smultest3_sw(i32 %a, i32 %b) {
%A = ashr i32 %a, 16
%B = ashr i32 %b, 15
%x = call %ov.result.32 @llvm.smul.with.overflow.i32(i32 %A, i32 %B)
ret %ov.result.32 %x
; CHECK-LABEL: @smultest3_sw
; CHECK: %x = call %ov.result.32 @llvm.smul.with.overflow.i32(i32 %A, i32 %B)
; CHECK-NEXT: ret %ov.result.32 %x
}
define %ov.result.32 @umultest_nuw(i32 %a, i32 %b) {
%A = and i32 %a, 65535 ; 0xffff
%B = and i32 %b, 65535 ; 0xffff
%x = call %ov.result.32 @llvm.umul.with.overflow.i32(i32 %A, i32 %B)
ret %ov.result.32 %x
; CHECK-LABEL: @umultest_nuw
; CHECK: %x = mul nuw i32 %A, %B
; CHECK-NEXT: %1 = insertvalue %ov.result.32 { i32 undef, i1 false }, i32 %x, 0
; CHECK-NEXT: ret %ov.result.32 %1
}
define i8 @umultest1(i8 %A, i1* %overflowPtr) {
%x = call %overflow.result @llvm.umul.with.overflow.i8(i8 0, i8 %A)
%y = extractvalue %overflow.result %x, 0
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK-LABEL: @umultest1(
; CHECK-NEXT: store i1 false, i1* %overflowPtr
; CHECK-NEXT: ret i8 0
}
define i8 @umultest2(i8 %A, i1* %overflowPtr) {
%x = call %overflow.result @llvm.umul.with.overflow.i8(i8 1, i8 %A)
%y = extractvalue %overflow.result %x, 0
%z = extractvalue %overflow.result %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
; CHECK-LABEL: @umultest2(
; CHECK-NEXT: store i1 false, i1* %overflowPtr
; CHECK-NEXT: ret i8 %A
}
define i32 @umultest3(i32 %n) nounwind {
%shr = lshr i32 %n, 2
%mul = call %ov.result.32 @llvm.umul.with.overflow.i32(i32 %shr, i32 3)
%ov = extractvalue %ov.result.32 %mul, 1
%res = extractvalue %ov.result.32 %mul, 0
%ret = select i1 %ov, i32 -1, i32 %res
ret i32 %ret
; CHECK-LABEL: @umultest3(
; CHECK-NEXT: shr
; CHECK-NEXT: mul nuw
; CHECK-NEXT: ret
}
define i32 @umultest4(i32 %n) nounwind {
%shr = lshr i32 %n, 1
%mul = call %ov.result.32 @llvm.umul.with.overflow.i32(i32 %shr, i32 4)
%ov = extractvalue %ov.result.32 %mul, 1
%res = extractvalue %ov.result.32 %mul, 0
%ret = select i1 %ov, i32 -1, i32 %res
ret i32 %ret
; CHECK-LABEL: @umultest4(
; CHECK: umul.with.overflow
}
define %ov.result.32 @umultest5(i32 %x, i32 %y) nounwind {
%or_x = or i32 %x, 2147483648
%or_y = or i32 %y, 2147483648
%mul = call %ov.result.32 @llvm.umul.with.overflow.i32(i32 %or_x, i32 %or_y)
ret %ov.result.32 %mul
; CHECK-LABEL: @umultest5(
; CHECK-NEXT: %[[or_x:.*]] = or i32 %x, -2147483648
; CHECK-NEXT: %[[or_y:.*]] = or i32 %y, -2147483648
; CHECK-NEXT: %[[mul:.*]] = mul i32 %[[or_x]], %[[or_y]]
; CHECK-NEXT: %[[ret:.*]] = insertvalue %ov.result.32 { i32 undef, i1 true }, i32 %[[mul]], 0
; CHECK-NEXT: ret %ov.result.32 %[[ret]]
}
define void @powi(double %V, double *%P) {
%A = tail call double @llvm.powi.f64(double %V, i32 -1) nounwind
store volatile double %A, double* %P
@ -574,71 +336,6 @@ define <2 x i32> @cttz_select_vec(<2 x i32> %Value) nounwind {
ret <2 x i32> %s
}
define i1 @overflow_div_add(i32 %v1, i32 %v2) nounwind {
; CHECK-LABEL: @overflow_div_add(
; CHECK-NEXT: ret i1 false
;
%div = sdiv i32 %v1, 2
%t = call %ov.result.32 @llvm.sadd.with.overflow.i32(i32 %div, i32 1)
%obit = extractvalue %ov.result.32 %t, 1
ret i1 %obit
}
define i1 @overflow_div_sub(i32 %v1, i32 %v2) nounwind {
; Check cases where the known sign bits are larger than the word size.
; CHECK-LABEL: @overflow_div_sub(
; CHECK-NEXT: ret i1 false
;
%a = ashr i32 %v1, 18
%div = sdiv i32 %a, 65536
%t = call %ov.result.32 @llvm.ssub.with.overflow.i32(i32 %div, i32 1)
%obit = extractvalue %ov.result.32 %t, 1
ret i1 %obit
}
define i1 @overflow_mod_mul(i32 %v1, i32 %v2) nounwind {
; CHECK-LABEL: @overflow_mod_mul(
; CHECK-NEXT: ret i1 false
;
%rem = srem i32 %v1, 1000
%t = call %ov.result.32 @llvm.smul.with.overflow.i32(i32 %rem, i32 %rem)
%obit = extractvalue %ov.result.32 %t, 1
ret i1 %obit
}
define i1 @overflow_mod_overflow_mul(i32 %v1, i32 %v2) nounwind {
; CHECK-LABEL: @overflow_mod_overflow_mul(
; CHECK-NEXT: [[REM:%.*]] = srem i32 %v1, 65537
; CHECK-NEXT: [[T:%.*]] = call %ov.result.32 @llvm.smul.with.overflow.i32(i32 [[REM]], i32 [[REM]])
; CHECK-NEXT: [[OBIT:%.*]] = extractvalue %ov.result.32 [[T]], 1
; CHECK-NEXT: ret i1 [[OBIT]]
;
%rem = srem i32 %v1, 65537
; This may overflow because the result of the mul operands may be greater than 16bits
; and the result greater than 32.
%t = call %ov.result.32 @llvm.smul.with.overflow.i32(i32 %rem, i32 %rem)
%obit = extractvalue %ov.result.32 %t, 1
ret i1 %obit
}
define %ov.result.32 @ssubtest_reorder(i8 %a) {
%A = sext i8 %a to i32
%x = call %ov.result.32 @llvm.ssub.with.overflow.i32(i32 0, i32 %A)
ret %ov.result.32 %x
; CHECK-LABEL: @ssubtest_reorder
; CHECK: %x = sub nsw i32 0, %A
; CHECK-NEXT: %1 = insertvalue %ov.result.32 { i32 undef, i1 false }, i32 %x, 0
; CHECK-NEXT: ret %ov.result.32 %1
}
define %ov.result.32 @never_overflows_ssub_test0(i32 %a) {
%x = call %ov.result.32 @llvm.ssub.with.overflow.i32(i32 %a, i32 0)
ret %ov.result.32 %x
; CHECK-LABEL: @never_overflows_ssub_test0
; CHECK-NEXT: %[[x:.*]] = insertvalue %ov.result.32 { i32 undef, i1 false }, i32 %a, 0
; CHECK-NEXT: ret %ov.result.32 %[[x]]
}
define void @cos(double *%P) {
; CHECK-LABEL: @cos(
; CHECK-NEXT: store volatile double 1.000000e+00, double* %P, align 8

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@ -0,0 +1,347 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine -S < %s | FileCheck %s
declare { i8, i1 } @llvm.uadd.with.overflow.i8(i8, i8) nounwind readnone
declare { i8, i1 } @llvm.umul.with.overflow.i8(i8, i8) nounwind readnone
declare { i32, i1 } @llvm.sadd.with.overflow.i32(i32, i32) nounwind readnone
declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) nounwind readnone
declare { i32, i1 } @llvm.ssub.with.overflow.i32(i32, i32) nounwind readnone
declare { i32, i1 } @llvm.usub.with.overflow.i32(i32, i32) nounwind readnone
declare { i32, i1 } @llvm.smul.with.overflow.i32(i32, i32) nounwind readnone
declare { i32, i1 } @llvm.umul.with.overflow.i32(i32, i32) nounwind readnone
define i8 @uaddtest1(i8 %A, i8 %B) {
; CHECK-LABEL: @uaddtest1(
; CHECK-NEXT: [[Y:%.*]] = add i8 [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: ret i8 [[Y]]
;
%x = call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %A, i8 %B)
%y = extractvalue { i8, i1 } %x, 0
ret i8 %y
}
define i8 @uaddtest2(i8 %A, i8 %B, i1* %overflowPtr) {
; CHECK-LABEL: @uaddtest2(
; CHECK-NEXT: [[AND_A:%.*]] = and i8 [[A:%.*]], 127
; CHECK-NEXT: [[AND_B:%.*]] = and i8 [[B:%.*]], 127
; CHECK-NEXT: [[X:%.*]] = add nuw i8 [[AND_A]], [[AND_B]]
; CHECK-NEXT: store i1 false, i1* [[OVERFLOWPTR:%.*]], align 1
; CHECK-NEXT: ret i8 [[X]]
;
%and.A = and i8 %A, 127
%and.B = and i8 %B, 127
%x = call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %and.A, i8 %and.B)
%y = extractvalue { i8, i1 } %x, 0
%z = extractvalue { i8, i1 } %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
}
define i8 @uaddtest3(i8 %A, i8 %B, i1* %overflowPtr) {
; CHECK-LABEL: @uaddtest3(
; CHECK-NEXT: [[OR_A:%.*]] = or i8 [[A:%.*]], -128
; CHECK-NEXT: [[OR_B:%.*]] = or i8 [[B:%.*]], -128
; CHECK-NEXT: [[X:%.*]] = add i8 [[OR_A]], [[OR_B]]
; CHECK-NEXT: store i1 true, i1* [[OVERFLOWPTR:%.*]], align 1
; CHECK-NEXT: ret i8 [[X]]
;
%or.A = or i8 %A, -128
%or.B = or i8 %B, -128
%x = call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %or.A, i8 %or.B)
%y = extractvalue { i8, i1 } %x, 0
%z = extractvalue { i8, i1 } %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
}
define i8 @uaddtest4(i8 %A, i1* %overflowPtr) {
; CHECK-LABEL: @uaddtest4(
; CHECK-NEXT: ret i8 undef
;
%x = call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 undef, i8 %A)
%y = extractvalue { i8, i1 } %x, 0
%z = extractvalue { i8, i1 } %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
}
define i8 @uaddtest5(i8 %A, i1* %overflowPtr) {
; CHECK-LABEL: @uaddtest5(
; CHECK-NEXT: store i1 false, i1* [[OVERFLOWPTR:%.*]], align 1
; CHECK-NEXT: ret i8 [[A:%.*]]
;
%x = call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 0, i8 %A)
%y = extractvalue { i8, i1 } %x, 0
%z = extractvalue { i8, i1 } %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
}
define i1 @uaddtest6(i8 %A, i8 %B) {
; CHECK-LABEL: @uaddtest6(
; CHECK-NEXT: [[Z:%.*]] = icmp ugt i8 [[A:%.*]], 3
; CHECK-NEXT: ret i1 [[Z]]
;
%x = call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %A, i8 -4)
%z = extractvalue { i8, i1 } %x, 1
ret i1 %z
}
define i8 @uaddtest7(i8 %A, i8 %B) {
; CHECK-LABEL: @uaddtest7(
; CHECK-NEXT: [[Z:%.*]] = add i8 [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: ret i8 [[Z]]
;
%x = call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %A, i8 %B)
%z = extractvalue { i8, i1 } %x, 0
ret i8 %z
}
; PR20194
define { i32, i1 } @saddtest_nsw(i8 %a, i8 %b) {
; CHECK-LABEL: @saddtest_nsw(
; CHECK-NEXT: [[AA:%.*]] = sext i8 [[A:%.*]] to i32
; CHECK-NEXT: [[BB:%.*]] = sext i8 [[B:%.*]] to i32
; CHECK-NEXT: [[X:%.*]] = add nsw i32 [[AA]], [[BB]]
; CHECK-NEXT: [[TMP1:%.*]] = insertvalue { i32, i1 } { i32 undef, i1 false }, i32 [[X]], 0
; CHECK-NEXT: ret { i32, i1 } [[TMP1]]
;
%aa = sext i8 %a to i32
%bb = sext i8 %b to i32
%x = call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %aa, i32 %bb)
ret { i32, i1 } %x
}
define { i32, i1 } @uaddtest_nuw(i32 %a, i32 %b) {
; CHECK-LABEL: @uaddtest_nuw(
; CHECK-NEXT: [[AA:%.*]] = and i32 [[A:%.*]], 2147483647
; CHECK-NEXT: [[BB:%.*]] = and i32 [[B:%.*]], 2147483647
; CHECK-NEXT: [[X:%.*]] = add nuw i32 [[AA]], [[BB]]
; CHECK-NEXT: [[TMP1:%.*]] = insertvalue { i32, i1 } { i32 undef, i1 false }, i32 [[X]], 0
; CHECK-NEXT: ret { i32, i1 } [[TMP1]]
;
%aa = and i32 %a, 2147483647
%bb = and i32 %b, 2147483647
%x = call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %aa, i32 %bb)
ret { i32, i1 } %x
}
define { i32, i1 } @ssubtest_nsw(i8 %a, i8 %b) {
; CHECK-LABEL: @ssubtest_nsw(
; CHECK-NEXT: [[AA:%.*]] = sext i8 [[A:%.*]] to i32
; CHECK-NEXT: [[BB:%.*]] = sext i8 [[B:%.*]] to i32
; CHECK-NEXT: [[X:%.*]] = sub nsw i32 [[AA]], [[BB]]
; CHECK-NEXT: [[TMP1:%.*]] = insertvalue { i32, i1 } { i32 undef, i1 false }, i32 [[X]], 0
; CHECK-NEXT: ret { i32, i1 } [[TMP1]]
;
%aa = sext i8 %a to i32
%bb = sext i8 %b to i32
%x = call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %aa, i32 %bb)
ret { i32, i1 } %x
}
define { i32, i1 } @usubtest_nuw(i32 %a, i32 %b) {
; CHECK-LABEL: @usubtest_nuw(
; CHECK-NEXT: [[AA:%.*]] = or i32 [[A:%.*]], -2147483648
; CHECK-NEXT: [[BB:%.*]] = and i32 [[B:%.*]], 2147483647
; CHECK-NEXT: [[X:%.*]] = sub nuw i32 [[AA]], [[BB]]
; CHECK-NEXT: [[TMP1:%.*]] = insertvalue { i32, i1 } { i32 undef, i1 false }, i32 [[X]], 0
; CHECK-NEXT: ret { i32, i1 } [[TMP1]]
;
%aa = or i32 %a, 2147483648
%bb = and i32 %b, 2147483647
%x = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %aa, i32 %bb)
ret { i32, i1 } %x
}
define { i32, i1 } @smultest1_nsw(i32 %a, i32 %b) {
; CHECK-LABEL: @smultest1_nsw(
; CHECK-NEXT: [[AA:%.*]] = and i32 [[A:%.*]], 4095
; CHECK-NEXT: [[BB:%.*]] = and i32 [[B:%.*]], 524287
; CHECK-NEXT: [[X:%.*]] = mul nuw nsw i32 [[AA]], [[BB]]
; CHECK-NEXT: [[TMP1:%.*]] = insertvalue { i32, i1 } { i32 undef, i1 false }, i32 [[X]], 0
; CHECK-NEXT: ret { i32, i1 } [[TMP1]]
;
%aa = and i32 %a, 4095 ; 0xfff
%bb = and i32 %b, 524287; 0x7ffff
%x = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %aa, i32 %bb)
ret { i32, i1 } %x
}
define { i32, i1 } @smultest2_nsw(i32 %a, i32 %b) {
; CHECK-LABEL: @smultest2_nsw(
; CHECK-NEXT: [[AA:%.*]] = ashr i32 [[A:%.*]], 16
; CHECK-NEXT: [[BB:%.*]] = ashr i32 [[B:%.*]], 16
; CHECK-NEXT: [[X:%.*]] = mul nsw i32 [[AA]], [[BB]]
; CHECK-NEXT: [[TMP1:%.*]] = insertvalue { i32, i1 } { i32 undef, i1 false }, i32 [[X]], 0
; CHECK-NEXT: ret { i32, i1 } [[TMP1]]
;
%aa = ashr i32 %a, 16
%bb = ashr i32 %b, 16
%x = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %aa, i32 %bb)
ret { i32, i1 } %x
}
define { i32, i1 } @smultest3_sw(i32 %a, i32 %b) {
; CHECK-LABEL: @smultest3_sw(
; CHECK-NEXT: [[AA:%.*]] = ashr i32 [[A:%.*]], 16
; CHECK-NEXT: [[BB:%.*]] = ashr i32 [[B:%.*]], 15
; CHECK-NEXT: [[X:%.*]] = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 [[AA]], i32 [[BB]])
; CHECK-NEXT: ret { i32, i1 } [[X]]
;
%aa = ashr i32 %a, 16
%bb = ashr i32 %b, 15
%x = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %aa, i32 %bb)
ret { i32, i1 } %x
}
define { i32, i1 } @umultest_nuw(i32 %a, i32 %b) {
; CHECK-LABEL: @umultest_nuw(
; CHECK-NEXT: [[AA:%.*]] = and i32 [[A:%.*]], 65535
; CHECK-NEXT: [[BB:%.*]] = and i32 [[B:%.*]], 65535
; CHECK-NEXT: [[X:%.*]] = mul nuw i32 [[AA]], [[BB]]
; CHECK-NEXT: [[TMP1:%.*]] = insertvalue { i32, i1 } { i32 undef, i1 false }, i32 [[X]], 0
; CHECK-NEXT: ret { i32, i1 } [[TMP1]]
;
%aa = and i32 %a, 65535 ; 0xffff
%bb = and i32 %b, 65535 ; 0xffff
%x = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %aa, i32 %bb)
ret { i32, i1 } %x
}
define i8 @umultest1(i8 %A, i1* %overflowPtr) {
; CHECK-LABEL: @umultest1(
; CHECK-NEXT: store i1 false, i1* [[OVERFLOWPTR:%.*]], align 1
; CHECK-NEXT: ret i8 0
;
%x = call { i8, i1 } @llvm.umul.with.overflow.i8(i8 0, i8 %A)
%y = extractvalue { i8, i1 } %x, 0
%z = extractvalue { i8, i1 } %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
}
define i8 @umultest2(i8 %A, i1* %overflowPtr) {
; CHECK-LABEL: @umultest2(
; CHECK-NEXT: store i1 false, i1* [[OVERFLOWPTR:%.*]], align 1
; CHECK-NEXT: ret i8 [[A:%.*]]
;
%x = call { i8, i1 } @llvm.umul.with.overflow.i8(i8 1, i8 %A)
%y = extractvalue { i8, i1 } %x, 0
%z = extractvalue { i8, i1 } %x, 1
store i1 %z, i1* %overflowPtr
ret i8 %y
}
define i32 @umultest3(i32 %n) nounwind {
; CHECK-LABEL: @umultest3(
; CHECK-NEXT: [[SHR:%.*]] = lshr i32 [[N:%.*]], 2
; CHECK-NEXT: [[MUL:%.*]] = mul nuw i32 [[SHR]], 3
; CHECK-NEXT: ret i32 [[MUL]]
;
%shr = lshr i32 %n, 2
%mul = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %shr, i32 3)
%ov = extractvalue { i32, i1 } %mul, 1
%res = extractvalue { i32, i1 } %mul, 0
%ret = select i1 %ov, i32 -1, i32 %res
ret i32 %ret
}
define i32 @umultest4(i32 %n) nounwind {
; CHECK-LABEL: @umultest4(
; CHECK-NEXT: [[SHR:%.*]] = lshr i32 [[N:%.*]], 1
; CHECK-NEXT: [[MUL:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 [[SHR]], i32 4)
; CHECK-NEXT: [[OV:%.*]] = extractvalue { i32, i1 } [[MUL]], 1
; CHECK-NEXT: [[RES:%.*]] = extractvalue { i32, i1 } [[MUL]], 0
; CHECK-NEXT: [[RET:%.*]] = select i1 [[OV]], i32 -1, i32 [[RES]]
; CHECK-NEXT: ret i32 [[RET]]
;
%shr = lshr i32 %n, 1
%mul = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %shr, i32 4)
%ov = extractvalue { i32, i1 } %mul, 1
%res = extractvalue { i32, i1 } %mul, 0
%ret = select i1 %ov, i32 -1, i32 %res
ret i32 %ret
}
define { i32, i1 } @umultest5(i32 %x, i32 %y) nounwind {
; CHECK-LABEL: @umultest5(
; CHECK-NEXT: [[OR_X:%.*]] = or i32 [[X:%.*]], -2147483648
; CHECK-NEXT: [[OR_Y:%.*]] = or i32 [[Y:%.*]], -2147483648
; CHECK-NEXT: [[MUL:%.*]] = mul i32 [[OR_X]], [[OR_Y]]
; CHECK-NEXT: [[TMP1:%.*]] = insertvalue { i32, i1 } { i32 undef, i1 true }, i32 [[MUL]], 0
; CHECK-NEXT: ret { i32, i1 } [[TMP1]]
;
%or_x = or i32 %x, 2147483648
%or_y = or i32 %y, 2147483648
%mul = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %or_x, i32 %or_y)
ret { i32, i1 } %mul
}
define i1 @overflow_div_add(i32 %v1, i32 %v2) nounwind {
; CHECK-LABEL: @overflow_div_add(
; CHECK-NEXT: ret i1 false
;
%div = sdiv i32 %v1, 2
%t = call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %div, i32 1)
%obit = extractvalue { i32, i1 } %t, 1
ret i1 %obit
}
define i1 @overflow_div_sub(i32 %v1, i32 %v2) nounwind {
; Check cases where the known sign bits are larger than the word size.
; CHECK-LABEL: @overflow_div_sub(
; CHECK-NEXT: ret i1 false
;
%a = ashr i32 %v1, 18
%div = sdiv i32 %a, 65536
%t = call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %div, i32 1)
%obit = extractvalue { i32, i1 } %t, 1
ret i1 %obit
}
define i1 @overflow_mod_mul(i32 %v1, i32 %v2) nounwind {
; CHECK-LABEL: @overflow_mod_mul(
; CHECK-NEXT: ret i1 false
;
%rem = srem i32 %v1, 1000
%t = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %rem, i32 %rem)
%obit = extractvalue { i32, i1 } %t, 1
ret i1 %obit
}
define i1 @overflow_mod_overflow_mul(i32 %v1, i32 %v2) nounwind {
; CHECK-LABEL: @overflow_mod_overflow_mul(
; CHECK-NEXT: [[REM:%.*]] = srem i32 [[V1:%.*]], 65537
; CHECK-NEXT: [[T:%.*]] = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 [[REM]], i32 [[REM]])
; CHECK-NEXT: [[OBIT:%.*]] = extractvalue { i32, i1 } [[T]], 1
; CHECK-NEXT: ret i1 [[OBIT]]
;
%rem = srem i32 %v1, 65537
; This may overflow because the result of the mul operands may be greater than 16bits
; and the result greater than 32.
%t = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %rem, i32 %rem)
%obit = extractvalue { i32, i1 } %t, 1
ret i1 %obit
}
define { i32, i1 } @ssubtest_reorder(i8 %a) {
; CHECK-LABEL: @ssubtest_reorder(
; CHECK-NEXT: [[AA:%.*]] = sext i8 [[A:%.*]] to i32
; CHECK-NEXT: [[X:%.*]] = sub nsw i32 0, [[AA]]
; CHECK-NEXT: [[TMP1:%.*]] = insertvalue { i32, i1 } { i32 undef, i1 false }, i32 [[X]], 0
; CHECK-NEXT: ret { i32, i1 } [[TMP1]]
;
%aa = sext i8 %a to i32
%x = call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 0, i32 %aa)
ret { i32, i1 } %x
}
define { i32, i1 } @never_overflows_ssub_test0(i32 %a) {
; CHECK-LABEL: @never_overflows_ssub_test0(
; CHECK-NEXT: [[X:%.*]] = insertvalue { i32, i1 } { i32 undef, i1 false }, i32 [[A:%.*]], 0
; CHECK-NEXT: ret { i32, i1 } [[X]]
;
%x = call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %a, i32 0)
ret { i32, i1 } %x
}