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; RUN: opt < %s -slsr -gvn -dce -S | FileCheck %s
target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
define i32 @slsr_gep(i32* %input, i64 %s) {
; CHECK-LABEL: @slsr_gep(
; v0 = input[0];
%p0 = getelementptr inbounds i32, i32* %input, i64 0
%v0 = load i32, i32* %p0
; v1 = input[s];
%p1 = getelementptr inbounds i32, i32* %input, i64 %s
; CHECK: %p1 = getelementptr inbounds i32, i32* %input, i64 %s
%v1 = load i32, i32* %p1
; v2 = input[s * 2];
%s2 = mul nsw i64 %s, 2
%p2 = getelementptr inbounds i32, i32* %input, i64 %s2
; CHECK: %p2 = getelementptr inbounds i32, i32* %p1, i64 %s
%v2 = load i32, i32* %p2
; return v0 + v1 + v2;
%1 = add i32 %v0, %v1
%2 = add i32 %1, %v2
ret i32 %2
}
define i32 @slsr_gep_sext(i32* %input, i32 %s) {
; CHECK-LABEL: @slsr_gep_sext(
; v0 = input[0];
%p0 = getelementptr inbounds i32, i32* %input, i64 0
%v0 = load i32, i32* %p0
; v1 = input[(long)s];
%t = sext i32 %s to i64
%p1 = getelementptr inbounds i32, i32* %input, i64 %t
; CHECK: %p1 = getelementptr inbounds i32, i32* %input, i64 %t
%v1 = load i32, i32* %p1
; v2 = input[(long)(s * 2)];
%s2 = mul nsw i32 %s, 2
%t2 = sext i32 %s2 to i64
%p2 = getelementptr inbounds i32, i32* %input, i64 %t2
; CHECK: %p2 = getelementptr inbounds i32, i32* %p1, i64 %t
%v2 = load i32, i32* %p2
; return v0 + v1 + v2;
%1 = add i32 %v0, %v1
%2 = add i32 %1, %v2
ret i32 %2
}
define i32 @slsr_gep_2d([10 x [5 x i32]]* %input, i64 %s, i64 %t) {
; CHECK-LABEL: @slsr_gep_2d(
; v0 = input[s][t];
%p0 = getelementptr inbounds [10 x [5 x i32]], [10 x [5 x i32]]* %input, i64 0, i64 %s, i64 %t
%v0 = load i32, i32* %p0
; v1 = input[s * 2][t];
%s2 = mul nsw i64 %s, 2
; CHECK: [[BUMP:%[a-zA-Z0-9]+]] = mul i64 %s, 5
%p1 = getelementptr inbounds [10 x [5 x i32]], [10 x [5 x i32]]* %input, i64 0, i64 %s2, i64 %t
; CHECK: %p1 = getelementptr inbounds i32, i32* %p0, i64 [[BUMP]]
%v1 = load i32, i32* %p1
; v2 = input[s * 3][t];
%s3 = mul nsw i64 %s, 3
%p2 = getelementptr inbounds [10 x [5 x i32]], [10 x [5 x i32]]* %input, i64 0, i64 %s3, i64 %t
; CHECK: %p2 = getelementptr inbounds i32, i32* %p1, i64 [[BUMP]]
%v2 = load i32, i32* %p2
; return v0 + v1 + v2;
%1 = add i32 %v0, %v1
%2 = add i32 %1, %v2
ret i32 %2
}
%struct.S = type <{ i64, i32 }>
; In this case, the bump
; = (char *)&input[s * 2][t].f1 - (char *)&input[s][t].f1
; = 60 * s
; which may not be divisible by typeof(input[s][t].f1) = 8. Therefore, we
; rewrite the candidates using byte offset instead of index offset as in
; @slsr_gep_2d.
define i64 @slsr_gep_uglygep([10 x [5 x %struct.S]]* %input, i64 %s, i64 %t) {
; CHECK-LABEL: @slsr_gep_uglygep(
; v0 = input[s][t].f1;
%p0 = getelementptr inbounds [10 x [5 x %struct.S]], [10 x [5 x %struct.S]]* %input, i64 0, i64 %s, i64 %t, i32 0
%v0 = load i64, i64* %p0
; v1 = input[s * 2][t].f1;
%s2 = mul nsw i64 %s, 2
; CHECK: [[BUMP:%[a-zA-Z0-9]+]] = mul i64 %s, 60
%p1 = getelementptr inbounds [10 x [5 x %struct.S]], [10 x [5 x %struct.S]]* %input, i64 0, i64 %s2, i64 %t, i32 0
; CHECK: getelementptr inbounds i8, i8* %{{[0-9]+}}, i64 [[BUMP]]
%v1 = load i64, i64* %p1
; v2 = input[s * 3][t].f1;
%s3 = mul nsw i64 %s, 3
%p2 = getelementptr inbounds [10 x [5 x %struct.S]], [10 x [5 x %struct.S]]* %input, i64 0, i64 %s3, i64 %t, i32 0
; CHECK: getelementptr inbounds i8, i8* %{{[0-9]+}}, i64 [[BUMP]]
%v2 = load i64, i64* %p2
; return v0 + v1 + v2;
%1 = add i64 %v0, %v1
%2 = add i64 %1, %v2
ret i64 %2
}
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