1 files changed, 149 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/arm64-ldp.ll b/test/CodeGen/AArch64/arm64-ldp.ll
new file mode 100644
index 0000000..5a98626
--- /dev/null
+++ b/test/CodeGen/AArch64/arm64-ldp.ll
@@ -0,0 +1,149 @@
+; RUN: llc < %s -march=arm64 -verify-machineinstrs | FileCheck %s
+; RUN: llc < %s -march=arm64 -aarch64-unscaled-mem-op=true\
+; RUN:   -verify-machineinstrs | FileCheck -check-prefix=LDUR_CHK %s
+
+; CHECK: ldp_int
+; CHECK: ldp
+define i32 @ldp_int(i32* %p) nounwind {
+  %tmp = load i32* %p, align 4
+  %add.ptr = getelementptr inbounds i32* %p, i64 1
+  %tmp1 = load i32* %add.ptr, align 4
+  %add = add nsw i32 %tmp1, %tmp
+  ret i32 %add
+}
+
+; CHECK: ldp_long
+; CHECK: ldp
+define i64 @ldp_long(i64* %p) nounwind {
+  %tmp = load i64* %p, align 8
+  %add.ptr = getelementptr inbounds i64* %p, i64 1
+  %tmp1 = load i64* %add.ptr, align 8
+  %add = add nsw i64 %tmp1, %tmp
+  ret i64 %add
+}
+
+; CHECK: ldp_float
+; CHECK: ldp
+define float @ldp_float(float* %p) nounwind {
+  %tmp = load float* %p, align 4
+  %add.ptr = getelementptr inbounds float* %p, i64 1
+  %tmp1 = load float* %add.ptr, align 4
+  %add = fadd float %tmp, %tmp1
+  ret float %add
+}
+
+; CHECK: ldp_double
+; CHECK: ldp
+define double @ldp_double(double* %p) nounwind {
+  %tmp = load double* %p, align 8
+  %add.ptr = getelementptr inbounds double* %p, i64 1
+  %tmp1 = load double* %add.ptr, align 8
+  %add = fadd double %tmp, %tmp1
+  ret double %add
+}
+
+; Test the load/store optimizer---combine ldurs into a ldp, if appropriate
+define i32 @ldur_int(i32* %a) nounwind {
+; LDUR_CHK: ldur_int
+; LDUR_CHK: ldp     [[DST1:w[0-9]+]], [[DST2:w[0-9]+]], [x0, #-8]
+; LDUR_CHK-NEXT: add     w{{[0-9]+}}, [[DST2]], [[DST1]]
+; LDUR_CHK-NEXT: ret
+  %p1 = getelementptr inbounds i32* %a, i32 -1
+  %tmp1 = load i32* %p1, align 2
+  %p2 = getelementptr inbounds i32* %a, i32 -2
+  %tmp2 = load i32* %p2, align 2
+  %tmp3 = add i32 %tmp1, %tmp2
+  ret i32 %tmp3
+}
+
+define i64 @ldur_long(i64* %a) nounwind ssp {
+; LDUR_CHK: ldur_long
+; LDUR_CHK: ldp     [[DST1:x[0-9]+]], [[DST2:x[0-9]+]], [x0, #-16]
+; LDUR_CHK-NEXT: add     x{{[0-9]+}}, [[DST2]], [[DST1]]
+; LDUR_CHK-NEXT: ret
+  %p1 = getelementptr inbounds i64* %a, i64 -1
+  %tmp1 = load i64* %p1, align 2
+  %p2 = getelementptr inbounds i64* %a, i64 -2
+  %tmp2 = load i64* %p2, align 2
+  %tmp3 = add i64 %tmp1, %tmp2
+  ret i64 %tmp3
+}
+
+define float @ldur_float(float* %a) {
+; LDUR_CHK: ldur_float
+; LDUR_CHK: ldp     [[DST1:s[0-9]+]], [[DST2:s[0-9]+]], [x0, #-8]
+; LDUR_CHK-NEXT: add     s{{[0-9]+}}, [[DST2]], [[DST1]]
+; LDUR_CHK-NEXT: ret
+  %p1 = getelementptr inbounds float* %a, i64 -1
+  %tmp1 = load float* %p1, align 2
+  %p2 = getelementptr inbounds float* %a, i64 -2
+  %tmp2 = load float* %p2, align 2
+  %tmp3 = fadd float %tmp1, %tmp2
+  ret float %tmp3
+}
+
+define double @ldur_double(double* %a) {
+; LDUR_CHK: ldur_double
+; LDUR_CHK: ldp     [[DST1:d[0-9]+]], [[DST2:d[0-9]+]], [x0, #-16]
+; LDUR_CHK-NEXT: add     d{{[0-9]+}}, [[DST2]], [[DST1]]
+; LDUR_CHK-NEXT: ret
+  %p1 = getelementptr inbounds double* %a, i64 -1
+  %tmp1 = load double* %p1, align 2
+  %p2 = getelementptr inbounds double* %a, i64 -2
+  %tmp2 = load double* %p2, align 2
+  %tmp3 = fadd double %tmp1, %tmp2
+  ret double %tmp3
+}
+
+; Now check some boundary conditions
+define i64 @pairUpBarelyIn(i64* %a) nounwind ssp {
+; LDUR_CHK: pairUpBarelyIn
+; LDUR_CHK-NOT: ldur
+; LDUR_CHK: ldp     [[DST1:x[0-9]+]], [[DST2:x[0-9]+]], [x0, #-256]
+; LDUR_CHK-NEXT: add     x{{[0-9]+}}, [[DST2]], [[DST1]]
+; LDUR_CHK-NEXT: ret
+  %p1 = getelementptr inbounds i64* %a, i64 -31
+  %tmp1 = load i64* %p1, align 2
+  %p2 = getelementptr inbounds i64* %a, i64 -32
+  %tmp2 = load i64* %p2, align 2
+  %tmp3 = add i64 %tmp1, %tmp2
+  ret i64 %tmp3
+}
+
+define i64 @pairUpBarelyOut(i64* %a) nounwind ssp {
+; LDUR_CHK: pairUpBarelyOut
+; LDUR_CHK-NOT: ldp
+; Don't be fragile about which loads or manipulations of the base register
+; are used---just check that there isn't an ldp before the add
+; LDUR_CHK: add
+; LDUR_CHK-NEXT: ret
+  %p1 = getelementptr inbounds i64* %a, i64 -32
+  %tmp1 = load i64* %p1, align 2
+  %p2 = getelementptr inbounds i64* %a, i64 -33
+  %tmp2 = load i64* %p2, align 2
+  %tmp3 = add i64 %tmp1, %tmp2
+  ret i64 %tmp3
+}
+
+define i64 @pairUpNotAligned(i64* %a) nounwind ssp {
+; LDUR_CHK: pairUpNotAligned
+; LDUR_CHK-NOT: ldp
+; LDUR_CHK: ldur
+; LDUR_CHK-NEXT: ldur
+; LDUR_CHK-NEXT: add
+; LDUR_CHK-NEXT: ret
+  %p1 = getelementptr inbounds i64* %a, i64 -18
+  %bp1 = bitcast i64* %p1 to i8*
+  %bp1p1 = getelementptr inbounds i8* %bp1, i64 1
+  %dp1 = bitcast i8* %bp1p1 to i64*
+  %tmp1 = load i64* %dp1, align 1
+
+  %p2 = getelementptr inbounds i64* %a, i64 -17
+  %bp2 = bitcast i64* %p2 to i8*
+  %bp2p1 = getelementptr inbounds i8* %bp2, i64 1
+  %dp2 = bitcast i8* %bp2p1 to i64*
+  %tmp2 = load i64* %dp2, align 1
+
+  %tmp3 = add i64 %tmp1, %tmp2
+  ret i64 %tmp3
+}