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[LV] Improve a test; get rid of runtime checks (#152182)

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This commit is contained in:
Ramkumar Ramachandra
2025-08-05 18:48:10 +01:00
committed by GitHub
parent 8a2d3f5653
commit f03345a07a
1 changed files with 11 additions and 23 deletions
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34
llvm/test/Transforms/LoopVectorize/assume.ll
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@@ -61,33 +61,24 @@ declare void @llvm.assume(i1) #0
attributes #0 = { nounwind willreturn }
%struct.data = type { ptr, ptr }
define void @test2(ptr nocapture readonly %d) {
define void @test2(ptr noalias %a, ptr noalias %b) {
; CHECK-LABEL: define void @test2(
; CHECK-SAME: ptr readonly captures(none) [[D:%.*]]) {
; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds [[STRUCT_DATA:%.*]], ptr [[D]], i64 0, i32 1
; CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[B]], align 8
; CHECK-NEXT: [[PTRINT:%.*]] = ptrtoint ptr [[TMP0]] to i64
; CHECK-NEXT: [[PTRINT:%.*]] = ptrtoint ptr [[A]] to i64
; CHECK-NEXT: [[MASKEDPTR:%.*]] = and i64 [[PTRINT]], 31
; CHECK-NEXT: [[MASKCOND:%.*]] = icmp eq i64 [[MASKEDPTR]], 0
; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[D]], align 8
; CHECK-NEXT: [[PTRINT2:%.*]] = ptrtoint ptr [[TMP1]] to i64
; CHECK-NEXT: [[PTRINT2:%.*]] = ptrtoint ptr [[B]] to i64
; CHECK-NEXT: [[MASKEDPTR3:%.*]] = and i64 [[PTRINT2]], 31
; CHECK-NEXT: [[MASKCOND4:%.*]] = icmp eq i64 [[MASKEDPTR3]], 0
; CHECK-NEXT: br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_MEMCHECK:.*]]
; CHECK: [[VECTOR_MEMCHECK]]:
; CHECK-NEXT: [[TMP2:%.*]] = sub i64 [[PTRINT2]], [[PTRINT]]
; CHECK-NEXT: [[DIFF_CHECK:%.*]] = icmp ult i64 [[TMP2]], 16
; CHECK-NEXT: br i1 [[DIFF_CHECK]], label %[[SCALAR_PH]], label %[[VECTOR_PH:.*]]
; CHECK-NEXT: br i1 false, label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK: [[VECTOR_PH]]:
; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
; CHECK: [[VECTOR_BODY]]:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: tail call void @llvm.assume(i1 [[MASKCOND]])
; CHECK-NEXT: tail call void @llvm.assume(i1 [[MASKCOND]])
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds float, ptr [[TMP0]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds float, ptr [[A]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds float, ptr [[TMP3]], i32 2
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x float>, ptr [[TMP3]], align 4
; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <2 x float>, ptr [[TMP4]], align 4
@@ -95,7 +86,7 @@ define void @test2(ptr nocapture readonly %d) {
; CHECK-NEXT: [[TMP6:%.*]] = fadd <2 x float> [[WIDE_LOAD1]], splat (float 1.000000e+00)
; CHECK-NEXT: tail call void @llvm.assume(i1 [[MASKCOND4]])
; CHECK-NEXT: tail call void @llvm.assume(i1 [[MASKCOND4]])
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds float, ptr [[TMP1]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds float, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds float, ptr [[TMP7]], i32 2
; CHECK-NEXT: store <2 x float> [[TMP5]], ptr [[TMP7]], align 4
; CHECK-NEXT: store <2 x float> [[TMP6]], ptr [[TMP8]], align 4
@@ -107,13 +98,10 @@ define void @test2(ptr nocapture readonly %d) {
; CHECK: [[SCALAR_PH]]:
;
entry:
%b = getelementptr inbounds %struct.data, ptr %d, i64 0, i32 1
%0 = load ptr, ptr %b, align 8
%ptrint = ptrtoint ptr %0 to i64
%ptrint = ptrtoint ptr %a to i64
%maskedptr = and i64 %ptrint, 31
%maskcond = icmp eq i64 %maskedptr, 0
%1 = load ptr, ptr %d, align 8
%ptrint2 = ptrtoint ptr %1 to i64
%ptrint2 = ptrtoint ptr %b to i64
%maskedptr3 = and i64 %ptrint2, 31
%maskcond4 = icmp eq i64 %maskedptr3, 0
br label %for.body
@@ -122,11 +110,11 @@ entry:
for.body: ; preds = %for.body, %entry
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
tail call void @llvm.assume(i1 %maskcond)
%arrayidx = getelementptr inbounds float, ptr %0, i64 %indvars.iv
%arrayidx = getelementptr inbounds float, ptr %a, i64 %indvars.iv
%2 = load float, ptr %arrayidx, align 4
%add = fadd float %2, 1.000000e+00
tail call void @llvm.assume(i1 %maskcond4)
%arrayidx5 = getelementptr inbounds float, ptr %1, i64 %indvars.iv
%arrayidx5 = getelementptr inbounds float, ptr %b, i64 %indvars.iv
store float %add, ptr %arrayidx5, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv, 1599