174 lines
5.2 KiB
LLVM
174 lines
5.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -slsr -gvn -S | FileCheck %s
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; RUN: opt < %s -passes='slsr,gvn' -S | FileCheck %s
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target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
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define void @shl(i32 %b, i32 %s) {
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; CHECK-LABEL: @shl(
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; CHECK-NEXT: [[T1:%.*]] = add i32 [[B:%.*]], [[S:%.*]]
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; CHECK-NEXT: call void @foo(i32 [[T1]])
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; CHECK-NEXT: [[T2:%.*]] = add i32 [[T1]], [[S]]
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; CHECK-NEXT: call void @foo(i32 [[T2]])
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; CHECK-NEXT: ret void
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;
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%t1 = add i32 %b, %s
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call void @foo(i32 %t1)
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%s2 = shl i32 %s, 1
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%t2 = add i32 %b, %s2
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call void @foo(i32 %t2)
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ret void
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}
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define void @stride_is_2s(i32 %b, i32 %s) {
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; CHECK-LABEL: @stride_is_2s(
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; CHECK-NEXT: [[S2:%.*]] = shl i32 [[S:%.*]], 1
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; CHECK-NEXT: [[T1:%.*]] = add i32 [[B:%.*]], [[S2]]
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; CHECK-NEXT: call void @foo(i32 [[T1]])
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; CHECK-NEXT: [[T2:%.*]] = add i32 [[T1]], [[S2]]
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; CHECK-NEXT: call void @foo(i32 [[T2]])
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; CHECK-NEXT: [[T3:%.*]] = add i32 [[T2]], [[S2]]
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; CHECK-NEXT: call void @foo(i32 [[T3]])
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; CHECK-NEXT: ret void
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;
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%s2 = shl i32 %s, 1
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%t1 = add i32 %b, %s2
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call void @foo(i32 %t1)
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%s4 = shl i32 %s, 2
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%t2 = add i32 %b, %s4
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call void @foo(i32 %t2)
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%s6 = mul i32 %s, 6
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%t3 = add i32 %b, %s6
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call void @foo(i32 %t3)
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ret void
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}
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define void @stride_is_3s(i32 %b, i32 %s) {
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; CHECK-LABEL: @stride_is_3s(
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; CHECK-NEXT: [[T1:%.*]] = add i32 [[S:%.*]], [[B:%.*]]
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; CHECK-NEXT: call void @foo(i32 [[T1]])
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; CHECK-NEXT: [[TMP1:%.*]] = mul i32 [[S]], 3
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; CHECK-NEXT: [[T2:%.*]] = add i32 [[T1]], [[TMP1]]
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; CHECK-NEXT: call void @foo(i32 [[T2]])
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; CHECK-NEXT: [[T3:%.*]] = add i32 [[T2]], [[TMP1]]
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; CHECK-NEXT: call void @foo(i32 [[T3]])
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; CHECK-NEXT: ret void
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;
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%t1 = add i32 %s, %b
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call void @foo(i32 %t1)
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%s4 = shl i32 %s, 2
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%t2 = add i32 %s4, %b
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call void @foo(i32 %t2)
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%s7 = mul i32 %s, 7
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%t3 = add i32 %s7, %b
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call void @foo(i32 %t3)
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ret void
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}
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; foo(b + 6 * s);
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; foo(b + 4 * s);
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; foo(b + 2 * s);
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; =>
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; t1 = b + 6 * s;
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; foo(t1);
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; s2 = 2 * s;
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; t2 = t1 - s2;
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; foo(t2);
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; t3 = t2 - s2;
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; foo(t3);
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define void @stride_is_minus_2s(i32 %b, i32 %s) {
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; CHECK-LABEL: @stride_is_minus_2s(
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; CHECK-NEXT: [[S6:%.*]] = mul i32 [[S:%.*]], 6
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; CHECK-NEXT: [[T1:%.*]] = add i32 [[B:%.*]], [[S6]]
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; CHECK-NEXT: call void @foo(i32 [[T1]])
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; CHECK-NEXT: [[TMP1:%.*]] = shl i32 [[S]], 1
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; CHECK-NEXT: [[T2:%.*]] = sub i32 [[T1]], [[TMP1]]
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; CHECK-NEXT: call void @foo(i32 [[T2]])
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; CHECK-NEXT: [[T3:%.*]] = sub i32 [[T2]], [[TMP1]]
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; CHECK-NEXT: call void @foo(i32 [[T3]])
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; CHECK-NEXT: ret void
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;
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%s6 = mul i32 %s, 6
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%t1 = add i32 %b, %s6
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call void @foo(i32 %t1)
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%s4 = shl i32 %s, 2
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%t2 = add i32 %b, %s4
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call void @foo(i32 %t2)
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%s2 = shl i32 %s, 1
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%t3 = add i32 %b, %s2
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call void @foo(i32 %t3)
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ret void
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}
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; TODO: This pass is targeted at simple address-calcs, so it is artificially limited to
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; match scalar values. The code could be modified to handle vector types too.
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define void @stride_is_minus_2s_vec(<2 x i32> %b, <2 x i32> %s) {
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; CHECK-LABEL: @stride_is_minus_2s_vec(
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; CHECK-NEXT: [[S6:%.*]] = mul <2 x i32> [[S:%.*]], <i32 6, i32 6>
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; CHECK-NEXT: [[T1:%.*]] = add <2 x i32> [[B:%.*]], [[S6]]
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; CHECK-NEXT: call void @voo(<2 x i32> [[T1]])
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; CHECK-NEXT: [[S4:%.*]] = shl <2 x i32> [[S]], <i32 2, i32 2>
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; CHECK-NEXT: [[T2:%.*]] = add <2 x i32> [[B]], [[S4]]
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; CHECK-NEXT: call void @voo(<2 x i32> [[T2]])
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; CHECK-NEXT: [[S2:%.*]] = shl <2 x i32> [[S]], <i32 1, i32 1>
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; CHECK-NEXT: [[T3:%.*]] = add <2 x i32> [[B]], [[S2]]
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; CHECK-NEXT: call void @voo(<2 x i32> [[T3]])
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; CHECK-NEXT: ret void
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;
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%s6 = mul <2 x i32> %s, <i32 6, i32 6>
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%t1 = add <2 x i32> %b, %s6
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call void @voo(<2 x i32> %t1)
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%s4 = shl <2 x i32> %s, <i32 2, i32 2>
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%t2 = add <2 x i32> %b, %s4
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call void @voo(<2 x i32> %t2)
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%s2 = shl <2 x i32> %s, <i32 1, i32 1>
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%t3 = add <2 x i32> %b, %s2
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call void @voo(<2 x i32> %t3)
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ret void
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}
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; t = b + (s << 3);
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; foo(t);
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; foo(b + s);
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;
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; do not rewrite b + s to t - 7 * s because the latter is more complicated.
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define void @simple_enough(i32 %b, i32 %s) {
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; CHECK-LABEL: @simple_enough(
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; CHECK-NEXT: [[S8:%.*]] = shl i32 [[S:%.*]], 3
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; CHECK-NEXT: [[T1:%.*]] = add i32 [[B:%.*]], [[S8]]
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; CHECK-NEXT: call void @foo(i32 [[T1]])
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; CHECK-NEXT: [[T2:%.*]] = add i32 [[B]], [[S]]
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; CHECK-NEXT: call void @foo(i32 [[T2]])
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; CHECK-NEXT: ret void
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;
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%s8 = shl i32 %s, 3
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%t1 = add i32 %b, %s8
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call void @foo(i32 %t1)
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%t2 = add i32 %b, %s
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call void @foo(i32 %t2)
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ret void
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}
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define void @slsr_strided_add_128bit(i128 %b, i128 %s) {
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; CHECK-LABEL: @slsr_strided_add_128bit(
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; CHECK-NEXT: [[S125:%.*]] = shl i128 [[S:%.*]], 125
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; CHECK-NEXT: [[T1:%.*]] = add i128 [[B:%.*]], [[S125]]
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; CHECK-NEXT: call void @bar(i128 [[T1]])
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; CHECK-NEXT: [[T2:%.*]] = add i128 [[T1]], [[S125]]
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; CHECK-NEXT: call void @bar(i128 [[T2]])
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; CHECK-NEXT: ret void
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;
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%s125 = shl i128 %s, 125
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%s126 = shl i128 %s, 126
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%t1 = add i128 %b, %s125
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call void @bar(i128 %t1)
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%t2 = add i128 %b, %s126
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call void @bar(i128 %t2)
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ret void
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}
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declare void @foo(i32)
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declare void @voo(<2 x i32>)
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declare void @bar(i128)
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