3f8027fb67
This updates transform test cases for ADCE AddDiscriminators AggressiveInstCombine AlignmentFromAssumptions ArgumentPromotion BDCE CalledValuePropagation DCE Reg2Mem WholeProgramDevirt to use the -passes syntax when specifying the pipeline. Given that LLVM_ENABLE_NEW_PASS_MANAGER isn't set to off (which is a deprecated feature) the updated test cases already used the new pass manager, but they were using the legacy syntax when specifying the passes to run. This patch can be seen as a step toward deprecating that interface. This patch also removes some redundant RUN lines. Here I am referring to test cases that had multiple RUN lines verifying both the legacy "-passname" syntax and the new "-passes=passname" syntax. Since we switched the default pass manager to "new PM" both RUN lines have verified the new PM version of the pass (more or less wasting time running the same test twice), unless LLVM_ENABLE_NEW_PASS_MANAGER is set to "off". It is assumed that it is enough to run these tests with the new pass manager now. Differential Revision: https://reviews.llvm.org/D108472
234 lines
7.3 KiB
LLVM
234 lines
7.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=aggressive-instcombine -S | FileCheck %s
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define i16 @lshr_15(i16 %x) {
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; CHECK-LABEL: @lshr_15(
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; CHECK-NEXT: [[LSHR:%.*]] = lshr i16 [[X:%.*]], 15
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; CHECK-NEXT: ret i16 [[LSHR]]
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;
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%zext = zext i16 %x to i32
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%lshr = lshr i32 %zext, 15
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%trunc = trunc i32 %lshr to i16
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ret i16 %trunc
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}
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; Negative test
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define i16 @lshr_16(i16 %x) {
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; CHECK-LABEL: @lshr_16(
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; CHECK-NEXT: [[ZEXT:%.*]] = zext i16 [[X:%.*]] to i32
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; CHECK-NEXT: [[LSHR:%.*]] = lshr i32 [[ZEXT]], 16
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; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 [[LSHR]] to i16
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; CHECK-NEXT: ret i16 [[TRUNC]]
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;
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%zext = zext i16 %x to i32
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%lshr = lshr i32 %zext, 16
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%trunc = trunc i32 %lshr to i16
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ret i16 %trunc
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}
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; Negative test
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define i16 @lshr_var_shift_amount(i8 %x, i8 %amt) {
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; CHECK-LABEL: @lshr_var_shift_amount(
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; CHECK-NEXT: [[Z:%.*]] = zext i8 [[X:%.*]] to i32
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; CHECK-NEXT: [[ZA:%.*]] = zext i8 [[AMT:%.*]] to i32
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; CHECK-NEXT: [[S:%.*]] = lshr i32 [[Z]], [[ZA]]
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; CHECK-NEXT: [[A:%.*]] = add i32 [[S]], [[Z]]
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; CHECK-NEXT: [[S2:%.*]] = lshr i32 [[A]], 2
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; CHECK-NEXT: [[T:%.*]] = trunc i32 [[S2]] to i16
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; CHECK-NEXT: ret i16 [[T]]
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;
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%z = zext i8 %x to i32
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%za = zext i8 %amt to i32
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%s = lshr i32 %z, %za
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%a = add i32 %s, %z
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%s2 = lshr i32 %a, 2
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%t = trunc i32 %s2 to i16
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ret i16 %t
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}
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define i16 @lshr_var_bounded_shift_amount(i8 %x, i8 %amt) {
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; CHECK-LABEL: @lshr_var_bounded_shift_amount(
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; CHECK-NEXT: [[Z:%.*]] = zext i8 [[X:%.*]] to i16
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; CHECK-NEXT: [[ZA:%.*]] = zext i8 [[AMT:%.*]] to i16
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; CHECK-NEXT: [[ZA2:%.*]] = and i16 [[ZA]], 15
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; CHECK-NEXT: [[S:%.*]] = lshr i16 [[Z]], [[ZA2]]
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; CHECK-NEXT: [[A:%.*]] = add i16 [[S]], [[Z]]
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; CHECK-NEXT: [[S2:%.*]] = lshr i16 [[A]], 2
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; CHECK-NEXT: ret i16 [[S2]]
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;
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%z = zext i8 %x to i32
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%za = zext i8 %amt to i32
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%za2 = and i32 %za, 15
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%s = lshr i32 %z, %za2
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%a = add i32 %s, %z
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%s2 = lshr i32 %a, 2
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%t = trunc i32 %s2 to i16
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ret i16 %t
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}
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; Negative test
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define i32 @lshr_check_no_overflow(i32 %x, i16 %amt) {
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; CHECK-LABEL: @lshr_check_no_overflow(
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; CHECK-NEXT: [[ZEXT:%.*]] = zext i32 [[X:%.*]] to i64
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; CHECK-NEXT: [[SEXT:%.*]] = sext i16 [[AMT:%.*]] to i64
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; CHECK-NEXT: [[AND:%.*]] = and i64 [[SEXT]], 4294967295
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; CHECK-NEXT: [[SHL:%.*]] = lshr i64 [[ZEXT]], [[AND]]
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; CHECK-NEXT: [[TRUNC:%.*]] = trunc i64 [[SHL]] to i32
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; CHECK-NEXT: ret i32 [[TRUNC]]
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;
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%zext = zext i32 %x to i64
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%sext = sext i16 %amt to i64
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%and = and i64 %sext, 4294967295
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%shl = lshr i64 %zext, %and
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%trunc = trunc i64 %shl to i32
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ret i32 %trunc
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}
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define void @lshr_big_dag(i16* %a, i8 %b, i8 %c) {
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; CHECK-LABEL: @lshr_big_dag(
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; CHECK-NEXT: [[ZEXT1:%.*]] = zext i8 [[B:%.*]] to i16
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; CHECK-NEXT: [[ZEXT2:%.*]] = zext i8 [[C:%.*]] to i16
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; CHECK-NEXT: [[ADD1:%.*]] = add i16 [[ZEXT1]], [[ZEXT2]]
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; CHECK-NEXT: [[SFT1:%.*]] = and i16 [[ADD1]], 15
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; CHECK-NEXT: [[SHR1:%.*]] = lshr i16 [[ADD1]], [[SFT1]]
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; CHECK-NEXT: [[ADD2:%.*]] = add i16 [[ADD1]], [[SHR1]]
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; CHECK-NEXT: [[SFT2:%.*]] = and i16 [[ADD2]], 7
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; CHECK-NEXT: [[SHR2:%.*]] = lshr i16 [[ADD2]], [[SFT2]]
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; CHECK-NEXT: store i16 [[SHR2]], i16* [[A:%.*]], align 2
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; CHECK-NEXT: ret void
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;
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%zext1 = zext i8 %b to i32
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%zext2 = zext i8 %c to i32
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%add1 = add i32 %zext1, %zext2
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%sft1 = and i32 %add1, 15
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%shr1 = lshr i32 %add1, %sft1
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%add2 = add i32 %add1, %shr1
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%sft2 = and i32 %add2, 7
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%shr2 = lshr i32 %add2, %sft2
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%trunc = trunc i32 %shr2 to i16
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store i16 %trunc, i16* %a, align 2
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ret void
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}
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; Negative test
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define i8 @lshr_check_not_i8_trunc(i16 %x) {
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; CHECK-LABEL: @lshr_check_not_i8_trunc(
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; CHECK-NEXT: [[LSHR:%.*]] = lshr i16 [[X:%.*]], 1
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; CHECK-NEXT: [[ZEXT2:%.*]] = zext i16 [[LSHR]] to i32
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; CHECK-NEXT: [[LSHR2:%.*]] = lshr i32 [[ZEXT2]], 2
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; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 [[LSHR2]] to i8
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; CHECK-NEXT: ret i8 [[TRUNC]]
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;
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%lshr = lshr i16 %x, 1
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%zext2 = zext i16 %lshr to i32
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%lshr2 = lshr i32 %zext2, 2
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%trunc = trunc i32 %lshr2 to i8
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ret i8 %trunc
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}
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define <2 x i16> @lshr_vector(<2 x i8> %x) {
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; CHECK-LABEL: @lshr_vector(
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; CHECK-NEXT: [[Z:%.*]] = zext <2 x i8> [[X:%.*]] to <2 x i16>
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; CHECK-NEXT: [[ZA:%.*]] = and <2 x i16> [[Z]], <i16 7, i16 8>
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; CHECK-NEXT: [[S:%.*]] = lshr <2 x i16> [[Z]], [[ZA]]
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; CHECK-NEXT: [[A:%.*]] = add <2 x i16> [[S]], [[Z]]
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; CHECK-NEXT: [[S2:%.*]] = lshr <2 x i16> [[A]], <i16 4, i16 5>
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; CHECK-NEXT: ret <2 x i16> [[S2]]
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;
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%z = zext <2 x i8> %x to <2 x i32>
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%za = and <2 x i32> %z, <i32 7, i32 8>
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%s = lshr <2 x i32> %z, %za
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%a = add <2 x i32> %s, %z
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%s2 = lshr <2 x i32> %a, <i32 4, i32 5>
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%t = trunc <2 x i32> %s2 to <2 x i16>
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ret <2 x i16> %t
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}
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; Negative test - can only fold to <2 x i16>, requiring new vector type
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define <2 x i8> @lshr_vector_no_new_vector_type(<2 x i8> %x) {
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; CHECK-LABEL: @lshr_vector_no_new_vector_type(
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; CHECK-NEXT: [[Z:%.*]] = zext <2 x i8> [[X:%.*]] to <2 x i32>
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; CHECK-NEXT: [[ZA:%.*]] = and <2 x i32> [[Z]], <i32 7, i32 8>
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; CHECK-NEXT: [[S:%.*]] = lshr <2 x i32> [[Z]], [[ZA]]
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; CHECK-NEXT: [[A:%.*]] = add <2 x i32> [[S]], [[Z]]
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; CHECK-NEXT: [[S2:%.*]] = lshr <2 x i32> [[A]], <i32 4, i32 5>
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; CHECK-NEXT: [[T:%.*]] = trunc <2 x i32> [[S2]] to <2 x i8>
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; CHECK-NEXT: ret <2 x i8> [[T]]
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;
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%z = zext <2 x i8> %x to <2 x i32>
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%za = and <2 x i32> %z, <i32 7, i32 8>
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%s = lshr <2 x i32> %z, %za
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%a = add <2 x i32> %s, %z
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%s2 = lshr <2 x i32> %a, <i32 4, i32 5>
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%t = trunc <2 x i32> %s2 to <2 x i8>
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ret <2 x i8> %t
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}
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; Negative test
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define <2 x i16> @lshr_vector_large_shift_amount(<2 x i8> %x) {
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; CHECK-LABEL: @lshr_vector_large_shift_amount(
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; CHECK-NEXT: [[Z:%.*]] = zext <2 x i8> [[X:%.*]] to <2 x i32>
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; CHECK-NEXT: [[ZA:%.*]] = and <2 x i32> [[Z]], <i32 7, i32 8>
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; CHECK-NEXT: [[S:%.*]] = lshr <2 x i32> [[Z]], [[ZA]]
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; CHECK-NEXT: [[A:%.*]] = add <2 x i32> [[S]], [[Z]]
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; CHECK-NEXT: [[S2:%.*]] = lshr <2 x i32> [[A]], <i32 16, i32 5>
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; CHECK-NEXT: [[T:%.*]] = trunc <2 x i32> [[S2]] to <2 x i16>
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; CHECK-NEXT: ret <2 x i16> [[T]]
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;
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%z = zext <2 x i8> %x to <2 x i32>
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%za = and <2 x i32> %z, <i32 7, i32 8>
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%s = lshr <2 x i32> %z, %za
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%a = add <2 x i32> %s, %z
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%s2 = lshr <2 x i32> %a, <i32 16, i32 5>
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%t = trunc <2 x i32> %s2 to <2 x i16>
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ret <2 x i16> %t
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}
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define i16 @lshr_exact(i16 %x) {
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; CHECK-LABEL: @lshr_exact(
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; CHECK-NEXT: [[LSHR:%.*]] = lshr exact i16 [[X:%.*]], 15
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; CHECK-NEXT: ret i16 [[LSHR]]
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;
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%zext = zext i16 %x to i32
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%lshr = lshr exact i32 %zext, 15
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%trunc = trunc i32 %lshr to i16
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ret i16 %trunc
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}
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; Negative test
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define i16 @lshr_negative_operand(i16 %x) {
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; CHECK-LABEL: @lshr_negative_operand(
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; CHECK-NEXT: [[ZEXT:%.*]] = zext i16 [[X:%.*]] to i32
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; CHECK-NEXT: [[XOR:%.*]] = xor i32 -1, [[ZEXT]]
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; CHECK-NEXT: [[LSHR2:%.*]] = lshr i32 [[XOR]], 2
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; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 [[LSHR2]] to i16
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; CHECK-NEXT: ret i16 [[TRUNC]]
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;
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%zext = zext i16 %x to i32
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%xor = xor i32 -1, %zext
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%lshr2 = lshr i32 %xor, 2
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%trunc = trunc i32 %lshr2 to i16
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ret i16 %trunc
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}
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; We may encounter unoptimized IR as below,
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; so don't crash by assuming that we can
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; apply instruction flags (exact) if there
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; is no instruction.
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define i8 @non_canonical_crash() {
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; CHECK-LABEL: @non_canonical_crash(
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; CHECK-NEXT: ret i8 8
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;
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%sh = lshr i32 33, 2
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%tr = trunc i32 %sh to i8
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ret i8 %tr
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}
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