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https://github.com/capstone-engine/llvm-capstone.git
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[InstCombine] add tests for sext+lshr+trunc; NFC
Shows missing transforms with extra uses and vectors.
This commit is contained in:
Sanjay Patel
parent
2c512eaf37
commit
9b41821c1b
@ -1543,7 +1543,7 @@ define i8 @trunc_lshr_sext_uses2(i8 %A) {
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ret i8 %D
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}
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define <2 x i8 >@trunc_lshr_sext_uses3(<2 x i8> %A) {
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define <2 x i8> @trunc_lshr_sext_uses3(<2 x i8> %A) {
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; ALL-LABEL: @trunc_lshr_sext_uses3(
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; ALL-NEXT: [[B:%.*]] = sext <2 x i8> [[A:%.*]] to <2 x i32>
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; ALL-NEXT: call void @use_v2i32(<2 x i32> [[B]])
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@ -1617,6 +1617,243 @@ define i8 @trunc_lshr_overshift_sext_uses3(i8 %A) {
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ret i8 %D
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}
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define i8 @trunc_lshr_sext_wide_input(i16 %A) {
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; ALL-LABEL: @trunc_lshr_sext_wide_input(
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; ALL-NEXT: [[C:%.*]] = ashr i16 [[A:%.*]], 9
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; ALL-NEXT: [[D:%.*]] = trunc i16 [[C]] to i8
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; ALL-NEXT: ret i8 [[D]]
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;
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%B = sext i16 %A to i32
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%C = lshr i32 %B, 9
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%D = trunc i32 %C to i8
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ret i8 %D
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}
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define <2 x i8> @trunc_lshr_sext_wide_input_uses1(<2 x i16> %A) {
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; ALL-LABEL: @trunc_lshr_sext_wide_input_uses1(
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; ALL-NEXT: [[B:%.*]] = sext <2 x i16> [[A:%.*]] to <2 x i32>
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; ALL-NEXT: call void @use_v2i32(<2 x i32> [[B]])
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; ALL-NEXT: [[C:%.*]] = lshr <2 x i32> [[B]], <i32 9, i32 9>
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; ALL-NEXT: [[D:%.*]] = trunc <2 x i32> [[C]] to <2 x i8>
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; ALL-NEXT: ret <2 x i8> [[D]]
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;
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%B = sext <2 x i16> %A to <2 x i32>
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call void @use_v2i32(<2 x i32> %B)
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%C = lshr <2 x i32> %B, <i32 9, i32 9>
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%D = trunc <2 x i32> %C to <2 x i8>
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ret <2 x i8> %D
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}
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define i8 @trunc_lshr_sext_wide_input_uses2(i16 %A) {
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; ALL-LABEL: @trunc_lshr_sext_wide_input_uses2(
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; ALL-NEXT: [[B:%.*]] = sext i16 [[A:%.*]] to i32
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; ALL-NEXT: [[C:%.*]] = lshr i32 [[B]], 9
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; ALL-NEXT: call void @use_i32(i32 [[C]])
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; ALL-NEXT: [[D:%.*]] = trunc i32 [[C]] to i8
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; ALL-NEXT: ret i8 [[D]]
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;
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%B = sext i16 %A to i32
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%C = lshr i32 %B, 9
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call void @use_i32(i32 %C)
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%D = trunc i32 %C to i8
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ret i8 %D
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}
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define <2 x i8> @trunc_lshr_sext_wide_input_uses3(<2 x i16> %A) {
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; ALL-LABEL: @trunc_lshr_sext_wide_input_uses3(
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; ALL-NEXT: [[B:%.*]] = sext <2 x i16> [[A:%.*]] to <2 x i32>
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; ALL-NEXT: call void @use_v2i32(<2 x i32> [[B]])
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; ALL-NEXT: [[C:%.*]] = lshr <2 x i32> [[B]], <i32 9, i32 9>
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; ALL-NEXT: call void @use_v2i32(<2 x i32> [[C]])
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; ALL-NEXT: [[D:%.*]] = trunc <2 x i32> [[C]] to <2 x i8>
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; ALL-NEXT: ret <2 x i8> [[D]]
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;
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%B = sext <2 x i16 >%A to <2 x i32>
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call void @use_v2i32(<2 x i32> %B)
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%C = lshr <2 x i32> %B, <i32 9, i32 9>
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call void @use_v2i32(<2 x i32> %C)
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%D = trunc <2 x i32 >%C to <2 x i8>
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ret <2 x i8> %D
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}
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define <2 x i8> @trunc_lshr_overshift_wide_input_sext(<2 x i16> %A) {
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; ALL-LABEL: @trunc_lshr_overshift_wide_input_sext(
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; ALL-NEXT: [[TMP1:%.*]] = ashr <2 x i16> [[A:%.*]], <i16 15, i16 15>
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; ALL-NEXT: [[D:%.*]] = trunc <2 x i16> [[TMP1]] to <2 x i8>
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; ALL-NEXT: ret <2 x i8> [[D]]
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;
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%B = sext <2 x i16> %A to <2 x i32>
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%C = lshr <2 x i32> %B, <i32 16, i32 16>
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%D = trunc <2 x i32> %C to <2 x i8>
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ret <2 x i8> %D
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}
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define i8 @trunc_lshr_overshift_sext_wide_input_uses1(i16 %A) {
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; ALL-LABEL: @trunc_lshr_overshift_sext_wide_input_uses1(
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; ALL-NEXT: [[B:%.*]] = sext i16 [[A:%.*]] to i32
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; ALL-NEXT: call void @use_i32(i32 [[B]])
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; ALL-NEXT: [[C:%.*]] = lshr i32 [[B]], 16
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; ALL-NEXT: [[D:%.*]] = trunc i32 [[C]] to i8
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; ALL-NEXT: ret i8 [[D]]
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;
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%B = sext i16 %A to i32
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call void @use_i32(i32 %B)
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%C = lshr i32 %B, 16
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%D = trunc i32 %C to i8
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ret i8 %D
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}
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define <2 x i8> @trunc_lshr_overshift_sext_wide_input_uses2(<2 x i16> %A) {
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; ALL-LABEL: @trunc_lshr_overshift_sext_wide_input_uses2(
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; ALL-NEXT: [[TMP1:%.*]] = ashr <2 x i16> [[A:%.*]], <i16 15, i16 15>
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; ALL-NEXT: [[C:%.*]] = zext <2 x i16> [[TMP1]] to <2 x i32>
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; ALL-NEXT: call void @use_v2i32(<2 x i32> [[C]])
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; ALL-NEXT: [[D:%.*]] = trunc <2 x i16> [[TMP1]] to <2 x i8>
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; ALL-NEXT: ret <2 x i8> [[D]]
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;
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%B = sext <2 x i16> %A to <2 x i32>
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%C = lshr <2 x i32> %B, <i32 16, i32 16>
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call void @use_v2i32(<2 x i32> %C)
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%D = trunc <2 x i32> %C to <2 x i8>
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ret <2 x i8> %D
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}
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define i8 @trunc_lshr_overshift_sext_wide_input_uses3(i16 %A) {
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; ALL-LABEL: @trunc_lshr_overshift_sext_wide_input_uses3(
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; ALL-NEXT: [[B:%.*]] = sext i16 [[A:%.*]] to i32
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; ALL-NEXT: call void @use_i32(i32 [[B]])
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; ALL-NEXT: [[C:%.*]] = lshr i32 [[B]], 16
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; ALL-NEXT: call void @use_i32(i32 [[C]])
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; ALL-NEXT: [[D:%.*]] = trunc i32 [[C]] to i8
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; ALL-NEXT: ret i8 [[D]]
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;
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%B = sext i16 %A to i32
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call void @use_i32(i32 %B)
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%C = lshr i32 %B, 16
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call void @use_i32(i32 %C)
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%D = trunc i32 %C to i8
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ret i8 %D
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}
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define i16 @trunc_lshr_sext_narrow_input(i8 %A) {
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; ALL-LABEL: @trunc_lshr_sext_narrow_input(
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; ALL-NEXT: [[C:%.*]] = ashr i8 [[A:%.*]], 6
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; ALL-NEXT: [[D:%.*]] = sext i8 [[C]] to i16
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; ALL-NEXT: ret i16 [[D]]
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;
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%B = sext i8 %A to i32
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%C = lshr i32 %B, 6
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%D = trunc i32 %C to i16
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ret i16 %D
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}
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define <2 x i16> @trunc_lshr_sext_narrow_input_uses1(<2 x i8> %A) {
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; ALL-LABEL: @trunc_lshr_sext_narrow_input_uses1(
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; ALL-NEXT: [[B:%.*]] = sext <2 x i8> [[A:%.*]] to <2 x i32>
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; ALL-NEXT: call void @use_v2i32(<2 x i32> [[B]])
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; ALL-NEXT: [[C:%.*]] = lshr <2 x i32> [[B]], <i32 6, i32 6>
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; ALL-NEXT: [[D:%.*]] = trunc <2 x i32> [[C]] to <2 x i16>
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; ALL-NEXT: ret <2 x i16> [[D]]
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;
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%B = sext <2 x i8> %A to <2 x i32>
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call void @use_v2i32(<2 x i32> %B)
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%C = lshr <2 x i32> %B, <i32 6, i32 6>
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%D = trunc <2 x i32> %C to <2 x i16>
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ret <2 x i16> %D
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}
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define i16 @trunc_lshr_sext_narrow_input_uses2(i8 %A) {
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; ALL-LABEL: @trunc_lshr_sext_narrow_input_uses2(
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; ALL-NEXT: [[B:%.*]] = sext i8 [[A:%.*]] to i32
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; ALL-NEXT: [[C:%.*]] = lshr i32 [[B]], 6
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; ALL-NEXT: call void @use_i32(i32 [[C]])
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; ALL-NEXT: [[D:%.*]] = trunc i32 [[C]] to i16
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; ALL-NEXT: ret i16 [[D]]
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;
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%B = sext i8 %A to i32
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%C = lshr i32 %B, 6
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call void @use_i32(i32 %C)
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%D = trunc i32 %C to i16
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ret i16 %D
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}
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define <2 x i16> @trunc_lshr_sext_narrow_input_uses3(<2 x i8> %A) {
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; ALL-LABEL: @trunc_lshr_sext_narrow_input_uses3(
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; ALL-NEXT: [[B:%.*]] = sext <2 x i8> [[A:%.*]] to <2 x i32>
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; ALL-NEXT: call void @use_v2i32(<2 x i32> [[B]])
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; ALL-NEXT: [[C:%.*]] = lshr <2 x i32> [[B]], <i32 6, i32 6>
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; ALL-NEXT: call void @use_v2i32(<2 x i32> [[C]])
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; ALL-NEXT: [[D:%.*]] = trunc <2 x i32> [[C]] to <2 x i16>
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; ALL-NEXT: ret <2 x i16> [[D]]
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;
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%B = sext <2 x i8 >%A to <2 x i32>
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call void @use_v2i32(<2 x i32> %B)
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%C = lshr <2 x i32> %B, <i32 6, i32 6>
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call void @use_v2i32(<2 x i32> %C)
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%D = trunc <2 x i32 >%C to <2 x i16>
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ret <2 x i16> %D
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}
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define <2 x i16> @trunc_lshr_overshift_narrow_input_sext(<2 x i8> %A) {
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; ALL-LABEL: @trunc_lshr_overshift_narrow_input_sext(
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; ALL-NEXT: [[B:%.*]] = sext <2 x i8> [[A:%.*]] to <2 x i32>
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; ALL-NEXT: [[C:%.*]] = lshr <2 x i32> [[B]], <i32 8, i32 8>
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; ALL-NEXT: [[D:%.*]] = trunc <2 x i32> [[C]] to <2 x i16>
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; ALL-NEXT: ret <2 x i16> [[D]]
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;
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%B = sext <2 x i8> %A to <2 x i32>
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%C = lshr <2 x i32> %B, <i32 8, i32 8>
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%D = trunc <2 x i32> %C to <2 x i16>
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ret <2 x i16> %D
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}
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define i16 @trunc_lshr_overshift_sext_narrow_input_uses1(i8 %A) {
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; ALL-LABEL: @trunc_lshr_overshift_sext_narrow_input_uses1(
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; ALL-NEXT: [[B:%.*]] = sext i8 [[A:%.*]] to i32
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; ALL-NEXT: call void @use_i32(i32 [[B]])
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; ALL-NEXT: [[C:%.*]] = lshr i32 [[B]], 8
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; ALL-NEXT: [[D:%.*]] = trunc i32 [[C]] to i16
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; ALL-NEXT: ret i16 [[D]]
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;
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%B = sext i8 %A to i32
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call void @use_i32(i32 %B)
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%C = lshr i32 %B, 8
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%D = trunc i32 %C to i16
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ret i16 %D
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}
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define <2 x i16> @trunc_lshr_overshift_sext_narrow_input_uses2(<2 x i8> %A) {
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; ALL-LABEL: @trunc_lshr_overshift_sext_narrow_input_uses2(
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; ALL-NEXT: [[B:%.*]] = sext <2 x i8> [[A:%.*]] to <2 x i32>
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; ALL-NEXT: [[C:%.*]] = lshr <2 x i32> [[B]], <i32 8, i32 8>
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; ALL-NEXT: call void @use_v2i32(<2 x i32> [[C]])
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; ALL-NEXT: [[D:%.*]] = trunc <2 x i32> [[C]] to <2 x i16>
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; ALL-NEXT: ret <2 x i16> [[D]]
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;
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%B = sext <2 x i8> %A to <2 x i32>
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%C = lshr <2 x i32> %B, <i32 8, i32 8>
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call void @use_v2i32(<2 x i32> %C)
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%D = trunc <2 x i32> %C to <2 x i16>
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ret <2 x i16> %D
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}
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define i16 @trunc_lshr_overshift_sext_narrow_input_uses3(i8 %A) {
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; ALL-LABEL: @trunc_lshr_overshift_sext_narrow_input_uses3(
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; ALL-NEXT: [[B:%.*]] = sext i8 [[A:%.*]] to i32
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; ALL-NEXT: call void @use_i32(i32 [[B]])
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; ALL-NEXT: [[C:%.*]] = lshr i32 [[B]], 8
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; ALL-NEXT: call void @use_i32(i32 [[C]])
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; ALL-NEXT: [[D:%.*]] = trunc i32 [[C]] to i16
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; ALL-NEXT: ret i16 [[D]]
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;
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%B = sext i8 %A to i32
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call void @use_i32(i32 %B)
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%C = lshr i32 %B, 8
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call void @use_i32(i32 %C)
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%D = trunc i32 %C to i16
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ret i16 %D
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}
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define <2 x i8> @trunc_lshr_overshift2_sext(<2 x i8> %A) {
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; ALL-LABEL: @trunc_lshr_overshift2_sext(
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; ALL-NEXT: [[B:%.*]] = sext <2 x i8> [[A:%.*]] to <2 x i32>
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