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llvm-mirror/test/CodeGen/AArch64/arm64-ldp-cluster.ll
Vedant Kumar 8a31d7c70d [DAGCombiner] Set the right SDLoc on a newly-created sextload (6/N) 
This teaches tryToFoldExtOfLoad to set the right location on a
newly-created extload. With that in place, the logic for performing a
certain ([s|z]ext (load ...)) combine becomes identical for sexts and
zexts, and we can get rid of one copy of the logic.

The test case churn is due to dependencies on IROrders inherited from
the wrong SDLoc.

Part of: llvm.org/PR37262

Differential Revision: https://reviews.llvm.org/D46158

llvm-svn: 332118
2018-05-11 18:40:08 +00:00

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; REQUIRES: asserts
; RUN: llc < %s -mtriple=arm64-linux-gnu -mcpu=cortex-a57 -verify-misched -debug-only=machine-scheduler -o - 2>&1 > /dev/null | FileCheck %s
; RUN: llc < %s -mtriple=arm64-linux-gnu -mcpu=exynos-m1 -verify-misched -debug-only=machine-scheduler -o - 2>&1 > /dev/null | FileCheck --check-prefix=EXYNOSM1 %s
; RUN: llc < %s -mtriple=arm64-linux-gnu -mcpu=exynos-m3 -verify-misched -debug-only=machine-scheduler -o - 2>&1 > /dev/null | FileCheck %s
; Test ldr clustering.
; CHECK: ********** MI Scheduling **********
; CHECK-LABEL: ldr_int:%bb.0
; CHECK: Cluster ld/st SU(1) - SU(2)
; CHECK: SU(1): %{{[0-9]+}}:gpr32 = LDRWui
; CHECK: SU(2): %{{[0-9]+}}:gpr32 = LDRWui
; EXYNOSM1: ********** MI Scheduling **********
; EXYNOSM1-LABEL: ldr_int:%bb.0
; EXYNOSM1: Cluster ld/st SU(1) - SU(2)
; EXYNOSM1: SU(1): %{{[0-9]+}}:gpr32 = LDRWui
; EXYNOSM1: SU(2): %{{[0-9]+}}:gpr32 = LDRWui
define i32 @ldr_int(i32* %a) nounwind {
%p1 = getelementptr inbounds i32, i32* %a, i32 1
%tmp1 = load i32, i32* %p1, align 2
%p2 = getelementptr inbounds i32, i32* %a, i32 2
%tmp2 = load i32, i32* %p2, align 2
%tmp3 = add i32 %tmp1, %tmp2
ret i32 %tmp3
}
; Test ldpsw clustering
; CHECK: ********** MI Scheduling **********
; CHECK-LABEL: ldp_sext_int:%bb.0
; CHECK: Cluster ld/st SU(1) - SU(2)
; CHECK: SU(1): %{{[0-9]+}}:gpr64 = LDRSWui
; CHECK: SU(2): %{{[0-9]+}}:gpr64 = LDRSWui
; EXYNOSM1: ********** MI Scheduling **********
; EXYNOSM1-LABEL: ldp_sext_int:%bb.0
; EXYNOSM1: Cluster ld/st SU(1) - SU(2)
; EXYNOSM1: SU(1): %{{[0-9]+}}:gpr64 = LDRSWui
; EXYNOSM1: SU(2): %{{[0-9]+}}:gpr64 = LDRSWui
define i64 @ldp_sext_int(i32* %p) nounwind {
%tmp = load i32, i32* %p, align 4
%add.ptr = getelementptr inbounds i32, i32* %p, i64 1
%tmp1 = load i32, i32* %add.ptr, align 4
%sexttmp = sext i32 %tmp to i64
%sexttmp1 = sext i32 %tmp1 to i64
%add = add nsw i64 %sexttmp1, %sexttmp
ret i64 %add
}
; Test ldur clustering.
; CHECK: ********** MI Scheduling **********
; CHECK-LABEL: ldur_int:%bb.0
; CHECK: Cluster ld/st SU(2) - SU(1)
; CHECK: SU(1): %{{[0-9]+}}:gpr32 = LDURWi
; CHECK: SU(2): %{{[0-9]+}}:gpr32 = LDURWi
; EXYNOSM1: ********** MI Scheduling **********
; EXYNOSM1-LABEL: ldur_int:%bb.0
; EXYNOSM1: Cluster ld/st SU(2) - SU(1)
; EXYNOSM1: SU(1): %{{[0-9]+}}:gpr32 = LDURWi
; EXYNOSM1: SU(2): %{{[0-9]+}}:gpr32 = LDURWi
define i32 @ldur_int(i32* %a) nounwind {
%p1 = getelementptr inbounds i32, i32* %a, i32 -1
%tmp1 = load i32, i32* %p1, align 2
%p2 = getelementptr inbounds i32, i32* %a, i32 -2
%tmp2 = load i32, i32* %p2, align 2
%tmp3 = add i32 %tmp1, %tmp2
ret i32 %tmp3
}
; Test sext + zext clustering.
; CHECK: ********** MI Scheduling **********
; CHECK-LABEL: ldp_half_sext_zext_int:%bb.0
; CHECK: Cluster ld/st SU(3) - SU(4)
; CHECK: SU(3): %{{[0-9]+}}:gpr64 = LDRSWui
; CHECK: SU(4): undef %{{[0-9]+}}.sub_32:gpr64 = LDRWui
; EXYNOSM1: ********** MI Scheduling **********
; EXYNOSM1-LABEL: ldp_half_sext_zext_int:%bb.0
; EXYNOSM1: Cluster ld/st SU(3) - SU(4)
; EXYNOSM1: SU(3): %{{[0-9]+}}:gpr64 = LDRSWui
; EXYNOSM1: SU(4): undef %{{[0-9]+}}.sub_32:gpr64 = LDRWui
define i64 @ldp_half_sext_zext_int(i64* %q, i32* %p) nounwind {
%tmp0 = load i64, i64* %q, align 4
%tmp = load i32, i32* %p, align 4
%add.ptr = getelementptr inbounds i32, i32* %p, i64 1
%tmp1 = load i32, i32* %add.ptr, align 4
%sexttmp = sext i32 %tmp to i64
%sexttmp1 = zext i32 %tmp1 to i64
%add = add nsw i64 %sexttmp1, %sexttmp
%add1 = add nsw i64 %add, %tmp0
ret i64 %add1
}
; Test zext + sext clustering.
; CHECK: ********** MI Scheduling **********
; CHECK-LABEL: ldp_half_zext_sext_int:%bb.0
; CHECK: Cluster ld/st SU(3) - SU(4)
; CHECK: SU(3): undef %{{[0-9]+}}.sub_32:gpr64 = LDRWui
; CHECK: SU(4): %{{[0-9]+}}:gpr64 = LDRSWui
; EXYNOSM1: ********** MI Scheduling **********
; EXYNOSM1-LABEL: ldp_half_zext_sext_int:%bb.0
; EXYNOSM1: Cluster ld/st SU(3) - SU(4)
; EXYNOSM1: SU(3): undef %{{[0-9]+}}.sub_32:gpr64 = LDRWui
; EXYNOSM1: SU(4): %{{[0-9]+}}:gpr64 = LDRSWui
define i64 @ldp_half_zext_sext_int(i64* %q, i32* %p) nounwind {
%tmp0 = load i64, i64* %q, align 4
%tmp = load i32, i32* %p, align 4
%add.ptr = getelementptr inbounds i32, i32* %p, i64 1
%tmp1 = load i32, i32* %add.ptr, align 4
%sexttmp = zext i32 %tmp to i64
%sexttmp1 = sext i32 %tmp1 to i64
%add = add nsw i64 %sexttmp1, %sexttmp
%add1 = add nsw i64 %add, %tmp0
ret i64 %add1
}
; Verify we don't cluster volatile loads.
; CHECK: ********** MI Scheduling **********
; CHECK-LABEL: ldr_int_volatile:%bb.0
; CHECK-NOT: Cluster ld/st
; CHECK: SU(1): %{{[0-9]+}}:gpr32 = LDRWui
; CHECK: SU(2): %{{[0-9]+}}:gpr32 = LDRWui
; EXYNOSM1: ********** MI Scheduling **********
; EXYNOSM1-LABEL: ldr_int_volatile:%bb.0
; EXYNOSM1-NOT: Cluster ld/st
; EXYNOSM1: SU(1): %{{[0-9]+}}:gpr32 = LDRWui
; EXYNOSM1: SU(2): %{{[0-9]+}}:gpr32 = LDRWui
define i32 @ldr_int_volatile(i32* %a) nounwind {
%p1 = getelementptr inbounds i32, i32* %a, i32 1
%tmp1 = load volatile i32, i32* %p1, align 2
%p2 = getelementptr inbounds i32, i32* %a, i32 2
%tmp2 = load volatile i32, i32* %p2, align 2
%tmp3 = add i32 %tmp1, %tmp2
ret i32 %tmp3
}
; Test ldq clustering (no clustering for Exynos).
; CHECK: ********** MI Scheduling **********
; CHECK-LABEL: ldq_cluster:%bb.0
; CHECK: Cluster ld/st SU(1) - SU(3)
; CHECK: SU(1): %{{[0-9]+}}:fpr128 = LDRQui
; CHECK: SU(3): %{{[0-9]+}}:fpr128 = LDRQui
; EXYNOSM1: ********** MI Scheduling **********
; EXYNOSM1-LABEL: ldq_cluster:%bb.0
; EXYNOSM1-NOT: Cluster ld/st
define <2 x i64> @ldq_cluster(i64* %p) {
%a1 = bitcast i64* %p to <2 x i64>*
%tmp1 = load <2 x i64>, < 2 x i64>* %a1, align 8
%add.ptr2 = getelementptr inbounds i64, i64* %p, i64 2
%a2 = bitcast i64* %add.ptr2 to <2 x i64>*
%tmp2 = add nsw <2 x i64> %tmp1, %tmp1
%tmp3 = load <2 x i64>, <2 x i64>* %a2, align 8
%res = mul nsw <2 x i64> %tmp2, %tmp3
ret <2 x i64> %res
}
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