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[InstCombine] add/adjust test comments; NFC 

Follow-up to post-commit comment:
https://reviews.llvm.org/rG23a116c8c446
This commit is contained in:
Sanjay Patel 2021-06-04 09:03:32 -04:00
parent de07b1e84d
commit 1fc6027406
1 changed files with 6 additions and 4 deletions
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10
llvm/test/Transforms/InstCombine/lshr-trunc-sext-to-ashr-sext.ll
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@ -47,6 +47,8 @@ define i16 @t2(i7 %x) {
ret i16 %c
}
; negative test - shift amount doesn't match trunc amount
define i16 @n3(i8 %x) {
; CHECK-LABEL: @n3(
; CHECK-NEXT: [[A:%.*]] = lshr i8 [[X:%.*]], 3
@ -84,7 +86,7 @@ define <2 x i16> @t5_vec_undef(<2 x i8> %x) {
ret <2 x i16> %c
}
; TODO: We could convert both uses of %a to ashr.
; TODO: We could convert %a to ashr and eliminate 2nd use of %b.
define i16 @t6_extrause0(i8 %x) {
; CHECK-LABEL: @t6_extrause0(
@ -101,7 +103,7 @@ define i16 @t6_extrause0(i8 %x) {
ret i16 %c
}
; TODO: We could convert both uses of %a to ashr.
; TODO: We could convert %a to ashr and eliminate 2nd use of %b.
define <2 x i16> @t7_extrause0_vec_undef(<2 x i8> %x) {
; CHECK-LABEL: @t7_extrause0_vec_undef(
@ -118,7 +120,7 @@ define <2 x i16> @t7_extrause0_vec_undef(<2 x i8> %x) {
ret <2 x i16> %c
}
; TODO: We could convert both uses of %a to ashr.
; TODO: We could convert %a to ashr + mask (and) and eliminate %b.
define i16 @t8_extrause1(i8 %x) {
; CHECK-LABEL: @t8_extrause1(
@ -135,7 +137,7 @@ define i16 @t8_extrause1(i8 %x) {
ret i16 %c
}
; TODO: We could convert both uses of %a to ashr.
; TODO: We could convert %a to ashr + mask (and) and eliminate %b.
define <2 x i16> @t9_extrause1_vec_undef(<2 x i8> %x) {
; CHECK-LABEL: @t9_extrause1_vec_undef(