[NFC][PowerPC] Add test case for D64195

llvm-svn: 366191

Author: wuzish

llvm/test/CodeGen/PowerPC/float-load-store-pair.ll

@@ -0,0 +1,106 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -verify-machineinstrs < %s -mcpu=pwr9 -mtriple=powerpc64le-ibm-linux| FileCheck %s
+
+; This file verifies that for a given floating point load / store pair,
+; if the load value isn't used by any other operations,
+; then consider transforming the pair to integer load / store operations
+
+@a1 = local_unnamed_addr global double 0.000000e+00, align 8
+@a2 = local_unnamed_addr global double 0.000000e+00, align 8
+@a3 = local_unnamed_addr global double 0.000000e+00, align 8
+@a4 = local_unnamed_addr global double 0.000000e+00, align 8
+@a5 = local_unnamed_addr global double 0.000000e+00, align 8
+@a6 = local_unnamed_addr global double 0.000000e+00, align 8
+@a7 = local_unnamed_addr global double 0.000000e+00, align 8
+@a8 = local_unnamed_addr global double 0.000000e+00, align 8
+@a9 = local_unnamed_addr global double 0.000000e+00, align 8
+@a10 = local_unnamed_addr global double 0.000000e+00, align 8
+@a11 = local_unnamed_addr global double 0.000000e+00, align 8
+@a12 = local_unnamed_addr global double 0.000000e+00, align 8
+@a13 = local_unnamed_addr global double 0.000000e+00, align 8
+@a14 = local_unnamed_addr global double 0.000000e+00, align 8
+@a15 = local_unnamed_addr global double 0.000000e+00, align 8
+@a16 = local_unnamed_addr global ppc_fp128 0xM00000000000000000000000000000000, align 16
+@a17 = local_unnamed_addr global fp128 0xL00000000000000000000000000000000, align 16
+
+; Because this test function is trying to pass float argument by stack,
+; so the fpr is only used to load/store float argument
+define signext i32 @test() {
+; CHECK-LABEL: test:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    mflr 0
+; CHECK-NEXT:    std 0, 16(1)
+; CHECK-NEXT:    stdu 1, -192(1)
+; CHECK-NEXT:    .cfi_def_cfa_offset 192
+; CHECK-NEXT:    .cfi_offset lr, 16
+; CHECK-NEXT:    addis 3, 2, a1@toc@ha
+; CHECK-NEXT:    lfd 1, a1@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a2@toc@ha
+; CHECK-NEXT:    lfd 2, a2@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a3@toc@ha
+; CHECK-NEXT:    lfd 3, a3@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a4@toc@ha
+; CHECK-NEXT:    lfd 4, a4@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a5@toc@ha
+; CHECK-NEXT:    lfd 5, a5@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a6@toc@ha
+; CHECK-NEXT:    lfd 6, a6@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a7@toc@ha
+; CHECK-NEXT:    lfd 7, a7@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a8@toc@ha
+; CHECK-NEXT:    lfd 8, a8@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a9@toc@ha
+; CHECK-NEXT:    lfd 9, a9@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a10@toc@ha
+; CHECK-NEXT:    lfd 10, a10@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a11@toc@ha
+; CHECK-NEXT:    lfd 11, a11@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a12@toc@ha
+; CHECK-NEXT:    lfd 12, a12@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a13@toc@ha
+; CHECK-NEXT:    lfd 13, a13@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a14@toc@ha
+; CHECK-NEXT:    lfd 0, a14@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a15@toc@ha
+; CHECK-NEXT:    addis 4, 2, a17@toc@ha
+; CHECK-NEXT:    addi 4, 4, a17@toc@l
+; CHECK-NEXT:    lxsd 2, a15@toc@l(3)
+; CHECK-NEXT:    addis 3, 2, a16@toc@ha
+; CHECK-NEXT:    addi 3, 3, a16@toc@l
+; CHECK-NEXT:    lxvx 36, 0, 4
+; CHECK-NEXT:    lxvx 35, 0, 3
+; CHECK-NEXT:    li 3, 168
+; CHECK-NEXT:    stxvx 36, 1, 3
+; CHECK-NEXT:    li 3, 152
+; CHECK-NEXT:    stxvx 35, 1, 3
+; CHECK-NEXT:    stxsd 2, 144(1)
+; CHECK-NEXT:    stfd 0, 136(1)
+; CHECK-NEXT:    bl _Z3fooddddddddddddddd
+; CHECK-NEXT:    nop
+; CHECK-NEXT:    li 3, 0
+; CHECK-NEXT:    addi 1, 1, 192
+; CHECK-NEXT:    ld 0, 16(1)
+; CHECK-NEXT:    mtlr 0
+; CHECK-NEXT:    blr
+%1 = load double, double* @a1, align 8
+%2 = load double, double* @a2, align 8
+%3 = load double, double* @a3, align 8
+%4 = load double, double* @a4, align 8
+%5 = load double, double* @a5, align 8
+%6 = load double, double* @a6, align 8
+%7 = load double, double* @a7, align 8
+%8 = load double, double* @a8, align 8
+%9 = load double, double* @a9, align 8
+%10 = load double, double* @a10, align 8
+%11 = load double, double* @a11, align 8
+%12 = load double, double* @a12, align 8
+%13 = load double, double* @a13, align 8
+%14 = load double, double* @a14, align 8
+%15 = load double, double* @a15, align 8
+%16 = load ppc_fp128, ppc_fp128* @a16, align 16
+%17 = load fp128, fp128* @a17, align 16
+tail call void @_Z3fooddddddddddddddd(double %1, double %2, double %3, double %4, double %5, double %6, double %7, double %8, double %9, double %10, double %11, double %12, double %13, double %14, double %15, ppc_fp128 %16, fp128 %17)
+ret i32 0
+}
+
+declare void @_Z3fooddddddddddddddd(double, double, double, double, double, double, double, double, double, double, double, double, double, double, double, ppc_fp128, fp128)