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[Tests] Add a few more tests for idioms with FP induction variables
llvm-svn: 374807
This commit is contained in:
Philip Reames
parent
fcad66f165
commit
02945107f8
@ -139,3 +139,234 @@ define void @test5() nounwind {
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exit:
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ret void
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}
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define double @test_max_be() {
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; CHECK-LABEL: @test_max_be(
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; CHECK-NEXT: bb4:
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; CHECK-NEXT: br label [[BB8:%.*]]
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; CHECK: bb8:
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; CHECK-NEXT: [[TMP10:%.*]] = phi double [ 0.000000e+00, [[BB4:%.*]] ], [ [[TMP12:%.*]], [[BB22:%.*]] ]
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; CHECK-NEXT: [[TMP11_INT:%.*]] = phi i32 [ 0, [[BB4]] ], [ [[TMP13_INT:%.*]], [[BB22]] ]
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; CHECK-NEXT: [[INDVAR_CONV:%.*]] = sitofp i32 [[TMP11_INT]] to double
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; CHECK-NEXT: [[TMP12]] = fadd double [[TMP10]], [[INDVAR_CONV]]
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; CHECK-NEXT: [[TMP13_INT]] = add nuw nsw i32 [[TMP11_INT]], 1
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; CHECK-NEXT: [[TMP14:%.*]] = icmp slt i32 [[TMP13_INT]], 99999
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; CHECK-NEXT: br i1 [[TMP14]], label [[BB22]], label [[BB6:%.*]]
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; CHECK: bb22:
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; CHECK-NEXT: br i1 true, label [[BB8]], label [[BB6]]
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; CHECK: bb6:
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; CHECK-NEXT: [[TMP12_LCSSA:%.*]] = phi double [ [[TMP12]], [[BB22]] ], [ [[TMP12]], [[BB8]] ]
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; CHECK-NEXT: ret double [[TMP12_LCSSA]]
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;
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bb4:
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br label %bb8
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bb8:
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%tmp9 = phi i64 [ 1, %bb4 ], [ %tmp23, %bb22 ]
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%tmp10 = phi double [ 0.000000e+00, %bb4 ], [ %tmp12, %bb22 ]
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%tmp11 = phi double [ 0.000000e+00, %bb4 ], [ %tmp13, %bb22 ]
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%tmp12 = fadd double %tmp10, %tmp11
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%tmp13 = fadd double %tmp11, 1.000000e+00
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%tmp14 = fcmp olt double %tmp13, 9.999900e+04
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br i1 %tmp14, label %bb22, label %bb6
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bb22:
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%tmp23 = add nuw nsw i64 %tmp9, 1
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%tmp24 = icmp ult i64 %tmp9, 1048576
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br i1 %tmp24, label %bb8, label %bb6
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bb6:
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ret double %tmp12
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}
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define float @test_max_be2() {
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; CHECK-LABEL: @test_max_be2(
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; CHECK-NEXT: bb4:
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; CHECK-NEXT: br label [[BB8:%.*]]
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; CHECK: bb8:
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; CHECK-NEXT: [[TMP10:%.*]] = phi float [ 0.000000e+00, [[BB4:%.*]] ], [ [[TMP12:%.*]], [[BB22:%.*]] ]
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; CHECK-NEXT: [[TMP11_INT:%.*]] = phi i32 [ 0, [[BB4]] ], [ [[TMP13_INT:%.*]], [[BB22]] ]
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; CHECK-NEXT: [[INDVAR_CONV:%.*]] = sitofp i32 [[TMP11_INT]] to float
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; CHECK-NEXT: [[TMP12]] = fadd float [[TMP10]], [[INDVAR_CONV]]
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; CHECK-NEXT: [[TMP13_INT]] = add nuw nsw i32 [[TMP11_INT]], 1
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; CHECK-NEXT: [[TMP14:%.*]] = icmp slt i32 [[TMP13_INT]], 99999
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; CHECK-NEXT: br i1 [[TMP14]], label [[BB22]], label [[BB6:%.*]]
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; CHECK: bb22:
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; CHECK-NEXT: br i1 true, label [[BB8]], label [[BB6]]
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; CHECK: bb6:
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; CHECK-NEXT: [[TMP12_LCSSA:%.*]] = phi float [ [[TMP12]], [[BB22]] ], [ [[TMP12]], [[BB8]] ]
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; CHECK-NEXT: ret float [[TMP12_LCSSA]]
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;
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bb4:
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br label %bb8
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bb8:
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%tmp9 = phi i64 [ 1, %bb4 ], [ %tmp23, %bb22 ]
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%tmp10 = phi float [ 0.000000e+00, %bb4 ], [ %tmp12, %bb22 ]
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%tmp11 = phi float [ 0.000000e+00, %bb4 ], [ %tmp13, %bb22 ]
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%tmp12 = fadd float %tmp10, %tmp11
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%tmp13 = fadd float %tmp11, 1.000000e+00
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%tmp14 = fcmp olt float %tmp13, 9.999900e+04
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br i1 %tmp14, label %bb22, label %bb6
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bb22:
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%tmp23 = add nuw nsw i64 %tmp9, 1
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%tmp24 = icmp ult i64 %tmp9, 1048576
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br i1 %tmp24, label %bb8, label %bb6
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bb6:
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ret float %tmp12
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}
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; Bounds check
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define float @test_max_be3() {
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; CHECK-LABEL: @test_max_be3(
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; CHECK-NEXT: bb4:
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; CHECK-NEXT: br label [[BB8:%.*]]
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; CHECK: bb8:
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; CHECK-NEXT: [[TMP10:%.*]] = phi float [ 0.000000e+00, [[BB4:%.*]] ], [ [[TMP12:%.*]], [[BB22:%.*]] ]
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; CHECK-NEXT: [[TMP11_INT:%.*]] = phi i32 [ 0, [[BB4]] ], [ [[TMP13_INT:%.*]], [[BB22]] ]
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; CHECK-NEXT: [[INDVAR_CONV:%.*]] = sitofp i32 [[TMP11_INT]] to float
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; CHECK-NEXT: [[TMP12]] = fadd float [[TMP10]], [[INDVAR_CONV]]
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; CHECK-NEXT: [[TMP13_INT]] = add nuw nsw i32 [[TMP11_INT]], 1
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; CHECK-NEXT: [[TMP14:%.*]] = icmp slt i32 [[TMP13_INT]], 99999
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; CHECK-NEXT: br i1 [[TMP14]], label [[BB22]], label [[BB6:%.*]]
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; CHECK: bb22:
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; CHECK-NEXT: br i1 true, label [[BB8]], label [[BB6]]
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; CHECK: bb6:
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; CHECK-NEXT: [[TMP12_LCSSA:%.*]] = phi float [ [[TMP12]], [[BB22]] ], [ [[TMP12]], [[BB8]] ]
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; CHECK-NEXT: ret float [[TMP12_LCSSA]]
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;
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bb4:
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br label %bb8
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bb8:
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%tmp9 = phi i64 [ 1, %bb4 ], [ %tmp23, %bb22 ]
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%tmp10 = phi float [ 0.000000e+00, %bb4 ], [ %tmp12, %bb22 ]
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%tmp11 = phi float [ 0.000000e+00, %bb4 ], [ %tmp13, %bb22 ]
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%tmp12 = fadd float %tmp10, %tmp11
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%tmp13 = fadd float %tmp11, 1.000000e+00
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%tmp14 = fcmp olt float %tmp13, 9.999900e+04
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br i1 %tmp14, label %bb22, label %bb6
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bb22:
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%tmp23 = add nuw nsw i64 %tmp9, 1
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;; 2^23 = 16777215
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%tmp24 = icmp ult i64 %tmp9, 16777215
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br i1 %tmp24, label %bb8, label %bb6
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bb6:
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ret float %tmp12
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}
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; Show that given a computeable exit count, we can remove an
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; fcmp of a casted integer IV. (TODO)
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define void @fcmp1() nounwind {
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; CHECK-LABEL: @fcmp1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i64 [[IV]], 20000
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; CHECK-NEXT: br i1 [[CMP1]], label [[BACKEDGE]], label [[RETURN:%.*]]
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; CHECK: backedge:
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; CHECK-NEXT: [[IV_FP:%.*]] = sitofp i64 [[IV]] to double
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; CHECK-NEXT: [[TMP0:%.*]] = tail call i32 @foo(double [[IV_FP]]) #0
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[CMP2:%.*]] = fcmp olt double [[IV_FP]], 1.000000e+04
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; CHECK-NEXT: br i1 [[CMP2]], label [[BB]], label [[RETURN]]
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; CHECK: return:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %bb
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bb: ; preds = %bb, %entry
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %backedge ]
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%cmp1 = icmp slt i64 %iv, 20000
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br i1 %cmp1, label %backedge, label %return
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backedge:
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%iv.fp = sitofp i64 %iv to double
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tail call i32 @foo(double %iv.fp) nounwind
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%iv.next = add nsw nuw i64 %iv, 1
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%cmp2 = fcmp olt double %iv.fp, 1.000000e+04
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br i1 %cmp2, label %bb, label %return
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return: ; preds = %bb
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ret void
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}
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define void @fcmp2() nounwind {
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; CHECK-LABEL: @fcmp2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i64 [[IV]], 2000
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; CHECK-NEXT: br i1 [[CMP1]], label [[BACKEDGE]], label [[RETURN:%.*]]
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; CHECK: backedge:
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; CHECK-NEXT: [[IV_FP:%.*]] = sitofp i64 [[IV]] to double
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; CHECK-NEXT: [[TMP0:%.*]] = tail call i32 @foo(double [[IV_FP]]) #0
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[CMP2:%.*]] = fcmp olt double [[IV_FP]], 1.000000e+04
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; CHECK-NEXT: br i1 [[CMP2]], label [[BB]], label [[RETURN]]
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; CHECK: return:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %bb
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bb: ; preds = %bb, %entry
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %backedge ]
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%cmp1 = icmp slt i64 %iv, 2000
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br i1 %cmp1, label %backedge, label %return
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backedge:
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%iv.fp = sitofp i64 %iv to double
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tail call i32 @foo(double %iv.fp) nounwind
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%iv.next = add nsw nuw i64 %iv, 1
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%cmp2 = fcmp olt double %iv.fp, 1.000000e+04
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br i1 %cmp2, label %bb, label %return
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return: ; preds = %bb
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ret void
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}
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define void @fcmp_neg1() nounwind {
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; CHECK-LABEL: @fcmp_neg1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i64 [[IV]], -20
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; CHECK-NEXT: br i1 [[CMP1]], label [[BACKEDGE]], label [[RETURN:%.*]]
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; CHECK: backedge:
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; CHECK-NEXT: [[IV_FP:%.*]] = sitofp i64 [[IV]] to double
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; CHECK-NEXT: [[TMP0:%.*]] = tail call i32 @foo(double [[IV_FP]]) #0
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; CHECK-NEXT: [[IV_NEXT]] = add nuw i64 [[IV]], 1
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; CHECK-NEXT: [[CMP2:%.*]] = fcmp olt double [[IV_FP]], 1.000000e+04
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; CHECK-NEXT: br i1 [[CMP2]], label [[BB]], label [[RETURN]]
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; CHECK: return:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %bb
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bb: ; preds = %bb, %entry
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %backedge ]
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;; Range fact outside precise integer region
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%cmp1 = icmp ult i64 %iv, -20
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br i1 %cmp1, label %backedge, label %return
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backedge:
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%iv.fp = sitofp i64 %iv to double
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tail call i32 @foo(double %iv.fp) nounwind
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%iv.next = add nuw i64 %iv, 1
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%cmp2 = fcmp olt double %iv.fp, 1.000000e+04
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br i1 %cmp2, label %bb, label %return
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return: ; preds = %bb
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ret void
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}
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