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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2020-09-29 17:15:00 +0100 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2020-09-29 17:15:16 +0100 |
| commit | e5f047f27ec121e63e765d30683a472d1ba19ca5 (patch) | |
| tree | 842f0efbb8ab80f6979186cc200f8f60b80cf6c8 | |
| parent | b610d73b3fe67fe6b693740dfac5fd21a60b1e44 (diff) | |
| download | llvm-e5f047f27ec121e63e765d30683a472d1ba19ca5.zip llvm-e5f047f27ec121e63e765d30683a472d1ba19ca5.tar.gz llvm-e5f047f27ec121e63e765d30683a472d1ba19ca5.tar.bz2 | |
[InstCombine] Fix the outofrange tests and add exact shift tests for D88429
| -rw-r--r-- | llvm/test/Transforms/InstCombine/trunc-shift-trunc.ll | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/llvm/test/Transforms/InstCombine/trunc-shift-trunc.ll b/llvm/test/Transforms/InstCombine/trunc-shift-trunc.ll index 0838e82..3405025 100644 --- a/llvm/test/Transforms/InstCombine/trunc-shift-trunc.ll +++ b/llvm/test/Transforms/InstCombine/trunc-shift-trunc.ll @@ -62,12 +62,12 @@ define <2 x i8> @trunc_lshr_trunc_uniform_undef(<2 x i64> %a) { define i8 @trunc_lshr_trunc_outofrange(i64 %a) { ; CHECK-LABEL: @trunc_lshr_trunc_outofrange( ; CHECK-NEXT: [[B:%.*]] = trunc i64 [[A:%.*]] to i32 -; CHECK-NEXT: [[C:%.*]] = lshr i32 [[B]], 9 +; CHECK-NEXT: [[C:%.*]] = lshr i32 [[B]], 25 ; CHECK-NEXT: [[D:%.*]] = trunc i32 [[C]] to i8 ; CHECK-NEXT: ret i8 [[D]] ; %b = trunc i64 %a to i32 - %c = lshr i32 %b, 9 + %c = lshr i32 %b, 25 %d = trunc i32 %c to i8 ret i8 %d } @@ -75,12 +75,12 @@ define i8 @trunc_lshr_trunc_outofrange(i64 %a) { define <2 x i8> @trunc_lshr_trunc_nonuniform_outofrange(<2 x i64> %a) { ; CHECK-LABEL: @trunc_lshr_trunc_nonuniform_outofrange( ; CHECK-NEXT: [[B:%.*]] = trunc <2 x i64> [[A:%.*]] to <2 x i32> -; CHECK-NEXT: [[C:%.*]] = lshr <2 x i32> [[B]], <i32 8, i32 11> +; CHECK-NEXT: [[C:%.*]] = lshr <2 x i32> [[B]], <i32 8, i32 25> ; CHECK-NEXT: [[D:%.*]] = trunc <2 x i32> [[C]] to <2 x i8> ; CHECK-NEXT: ret <2 x i8> [[D]] ; %b = trunc <2 x i64> %a to <2 x i32> - %c = lshr <2 x i32> %b, <i32 8, i32 11> + %c = lshr <2 x i32> %b, <i32 8, i32 25> %d = trunc <2 x i32> %c to <2 x i8> ret <2 x i8> %d } @@ -98,6 +98,19 @@ define i8 @trunc_ashr_trunc(i64 %a) { ret i8 %d } +define i8 @trunc_ashr_trunc_exact(i64 %a) { +; CHECK-LABEL: @trunc_ashr_trunc_exact( +; CHECK-NEXT: [[B:%.*]] = trunc i64 [[A:%.*]] to i32 +; CHECK-NEXT: [[TMP1:%.*]] = lshr exact i32 [[B]], 8 +; CHECK-NEXT: [[D:%.*]] = trunc i32 [[TMP1]] to i8 +; CHECK-NEXT: ret i8 [[D]] +; + %b = trunc i64 %a to i32 + %c = ashr exact i32 %b, 8 + %d = trunc i32 %c to i8 + ret i8 %d +} + define <2 x i8> @trunc_ashr_trunc_uniform(<2 x i64> %a) { ; CHECK-LABEL: @trunc_ashr_trunc_uniform( ; CHECK-NEXT: [[B:%.*]] = trunc <2 x i64> [[A:%.*]] to <2 x i32> @@ -140,12 +153,12 @@ define <2 x i8> @trunc_ashr_trunc_uniform_undef(<2 x i64> %a) { define i8 @trunc_ashr_trunc_outofrange(i64 %a) { ; CHECK-LABEL: @trunc_ashr_trunc_outofrange( ; CHECK-NEXT: [[B:%.*]] = trunc i64 [[A:%.*]] to i32 -; CHECK-NEXT: [[TMP1:%.*]] = lshr i32 [[B]], 9 -; CHECK-NEXT: [[D:%.*]] = trunc i32 [[TMP1]] to i8 +; CHECK-NEXT: [[C:%.*]] = ashr i32 [[B]], 25 +; CHECK-NEXT: [[D:%.*]] = trunc i32 [[C]] to i8 ; CHECK-NEXT: ret i8 [[D]] ; %b = trunc i64 %a to i32 - %c = ashr i32 %b, 9 + %c = ashr i32 %b, 25 %d = trunc i32 %c to i8 ret i8 %d } @@ -153,12 +166,12 @@ define i8 @trunc_ashr_trunc_outofrange(i64 %a) { define <2 x i8> @trunc_ashr_trunc_nonuniform_outofrange(<2 x i64> %a) { ; CHECK-LABEL: @trunc_ashr_trunc_nonuniform_outofrange( ; CHECK-NEXT: [[B:%.*]] = trunc <2 x i64> [[A:%.*]] to <2 x i32> -; CHECK-NEXT: [[C:%.*]] = ashr <2 x i32> [[B]], <i32 8, i32 11> +; CHECK-NEXT: [[C:%.*]] = ashr <2 x i32> [[B]], <i32 8, i32 25> ; CHECK-NEXT: [[D:%.*]] = trunc <2 x i32> [[C]] to <2 x i8> ; CHECK-NEXT: ret <2 x i8> [[D]] ; %b = trunc <2 x i64> %a to <2 x i32> - %c = ashr <2 x i32> %b, <i32 8, i32 11> + %c = ashr <2 x i32> %b, <i32 8, i32 25> %d = trunc <2 x i32> %c to <2 x i8> ret <2 x i8> %d } |