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llvm-project/llvm/test/Transforms/SCCP/ub-shift.ll

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Recommit "[SCCP] Remove forcedconstant, go to overdefined instead" This includes a fix for cases where things get marked as overdefined in ResolvedUndefsIn, but we later discover a constant. To avoid crashing, we consistently bail out on overdefined values in the visitors. This is similar to the previous behavior with forcedconstant. This reverts the revert commit 02b72f564c8be0b4f4337d5c4a3fcf7e8018a818.
2020-02-14 07:05:50 +08:00
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
; RUN: opt < %s -sccp -S | FileCheck %s
define void @shift_undef_64(i64* %p) {
Recommit "[SCCP] Remove forcedconstant, go to overdefined instead" This includes a fix for cases where things get marked as overdefined in ResolvedUndefsIn, but we later discover a constant. To avoid crashing, we consistently bail out on overdefined values in the visitors. This is similar to the previous behavior with forcedconstant. This reverts the revert commit 02b72f564c8be0b4f4337d5c4a3fcf7e8018a818.
2020-02-14 07:05:50 +08:00
; CHECK-LABEL: @shift_undef_64(
Recommit "[SCCP] Use SimplifyBinOp for non-integer constant/expressions & overdef." This includes a fix reported with simplifications in the presence of NaN. This reverts the revert commit 06408451bf12d4baed1fb1312d8af6e6bbb6a797.
2020-04-14 18:15:20 +08:00
; CHECK-NEXT: store i64 0, i64* [[P:%.*]]
; CHECK-NEXT: store i64 -1, i64* [[P]]
Recommit "[SCCP] Remove forcedconstant, go to overdefined instead" This includes a fix for cases where things get marked as overdefined in ResolvedUndefsIn, but we later discover a constant. To avoid crashing, we consistently bail out on overdefined values in the visitors. This is similar to the previous behavior with forcedconstant. This reverts the revert commit 02b72f564c8be0b4f4337d5c4a3fcf7e8018a818.
2020-02-14 07:05:50 +08:00
; CHECK-NEXT: [[R3:%.*]] = shl i64 -1, 4294967298
; CHECK-NEXT: store i64 [[R3]], i64* [[P]]
; CHECK-NEXT: ret void
;
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
%r1 = lshr i64 -1, 4294967296 ; 2^32
store i64 %r1, i64* %p
%r2 = ashr i64 -1, 4294967297 ; 2^32 + 1
store i64 %r2, i64* %p
%r3 = shl i64 -1, 4294967298 ; 2^32 + 2
store i64 %r3, i64* %p
ret void
}
define void @shift_undef_65(i65* %p) {
Recommit "[SCCP] Remove forcedconstant, go to overdefined instead" This includes a fix for cases where things get marked as overdefined in ResolvedUndefsIn, but we later discover a constant. To avoid crashing, we consistently bail out on overdefined values in the visitors. This is similar to the previous behavior with forcedconstant. This reverts the revert commit 02b72f564c8be0b4f4337d5c4a3fcf7e8018a818.
2020-02-14 07:05:50 +08:00
; CHECK-LABEL: @shift_undef_65(
Recommit "[SCCP] Use SimplifyBinOp for non-integer constant/expressions & overdef." This includes a fix reported with simplifications in the presence of NaN. This reverts the revert commit 06408451bf12d4baed1fb1312d8af6e6bbb6a797.
2020-04-14 18:15:20 +08:00
; CHECK-NEXT: store i65 0, i65* [[P:%.*]]
; CHECK-NEXT: store i65 0, i65* [[P]]
Recommit "[SCCP] Remove forcedconstant, go to overdefined instead" This includes a fix for cases where things get marked as overdefined in ResolvedUndefsIn, but we later discover a constant. To avoid crashing, we consistently bail out on overdefined values in the visitors. This is similar to the previous behavior with forcedconstant. This reverts the revert commit 02b72f564c8be0b4f4337d5c4a3fcf7e8018a818.
2020-02-14 07:05:50 +08:00
; CHECK-NEXT: [[R3:%.*]] = shl i65 1, -18446744073709551615
; CHECK-NEXT: store i65 [[R3]], i65* [[P]]
; CHECK-NEXT: ret void
;
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
%r1 = lshr i65 2, 18446744073709551617
store i65 %r1, i65* %p
%r2 = ashr i65 4, 18446744073709551617
store i65 %r2, i65* %p
%r3 = shl i65 1, 18446744073709551617
store i65 %r3, i65* %p
ret void
}
define void @shift_undef_256(i256* %p) {
Recommit "[SCCP] Remove forcedconstant, go to overdefined instead" This includes a fix for cases where things get marked as overdefined in ResolvedUndefsIn, but we later discover a constant. To avoid crashing, we consistently bail out on overdefined values in the visitors. This is similar to the previous behavior with forcedconstant. This reverts the revert commit 02b72f564c8be0b4f4337d5c4a3fcf7e8018a818.
2020-02-14 07:05:50 +08:00
; CHECK-LABEL: @shift_undef_256(
Recommit "[SCCP] Use SimplifyBinOp for non-integer constant/expressions & overdef." This includes a fix reported with simplifications in the presence of NaN. This reverts the revert commit 06408451bf12d4baed1fb1312d8af6e6bbb6a797.
2020-04-14 18:15:20 +08:00
; CHECK-NEXT: store i256 0, i256* [[P:%.*]]
; CHECK-NEXT: store i256 0, i256* [[P]]
Recommit "[SCCP] Remove forcedconstant, go to overdefined instead" This includes a fix for cases where things get marked as overdefined in ResolvedUndefsIn, but we later discover a constant. To avoid crashing, we consistently bail out on overdefined values in the visitors. This is similar to the previous behavior with forcedconstant. This reverts the revert commit 02b72f564c8be0b4f4337d5c4a3fcf7e8018a818.
2020-02-14 07:05:50 +08:00
; CHECK-NEXT: [[R3:%.*]] = shl i256 1, 18446744073709551619
; CHECK-NEXT: store i256 [[R3]], i256* [[P]]
; CHECK-NEXT: ret void
;
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
%r1 = lshr i256 2, 18446744073709551617
store i256 %r1, i256* %p
%r2 = ashr i256 4, 18446744073709551618
store i256 %r2, i256* %p
%r3 = shl i256 1, 18446744073709551619
store i256 %r3, i256* %p
ret void
}
define void @shift_undef_511(i511* %p) {
Recommit "[SCCP] Remove forcedconstant, go to overdefined instead" This includes a fix for cases where things get marked as overdefined in ResolvedUndefsIn, but we later discover a constant. To avoid crashing, we consistently bail out on overdefined values in the visitors. This is similar to the previous behavior with forcedconstant. This reverts the revert commit 02b72f564c8be0b4f4337d5c4a3fcf7e8018a818.
2020-02-14 07:05:50 +08:00
; CHECK-LABEL: @shift_undef_511(
Recommit "[SCCP] Use SimplifyBinOp for non-integer constant/expressions & overdef." This includes a fix reported with simplifications in the presence of NaN. This reverts the revert commit 06408451bf12d4baed1fb1312d8af6e6bbb6a797.
2020-04-14 18:15:20 +08:00
; CHECK-NEXT: store i511 0, i511* [[P:%.*]]
; CHECK-NEXT: store i511 -1, i511* [[P]]
Recommit "[SCCP] Remove forcedconstant, go to overdefined instead" This includes a fix for cases where things get marked as overdefined in ResolvedUndefsIn, but we later discover a constant. To avoid crashing, we consistently bail out on overdefined values in the visitors. This is similar to the previous behavior with forcedconstant. This reverts the revert commit 02b72f564c8be0b4f4337d5c4a3fcf7e8018a818.
2020-02-14 07:05:50 +08:00
; CHECK-NEXT: [[R3:%.*]] = shl i511 -3, 1208925819614629174706180
; CHECK-NEXT: store i511 [[R3]], i511* [[P]]
; CHECK-NEXT: ret void
;
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
%r1 = lshr i511 -1, 1208925819614629174706276 ; 2^80 + 100
store i511 %r1, i511* %p
%r2 = ashr i511 -2, 1208925819614629174706200
store i511 %r2, i511* %p
%r3 = shl i511 -3, 1208925819614629174706180
store i511 %r3, i511* %p
ret void
}