Implement LowerCall_64 for the SPARC v9 64-bit ABI.

There is still no support for byval arguments (which I don't think are
needed) and varargs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178993 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 147 insertions, 3 deletions

diff --git a/test/CodeGen/SPARC/64abi.ll b/test/CodeGen/SPARC/64abi.ll
index d447ec76d8..10d8ff7c9a 100644
--- a/test/CodeGen/SPARC/64abi.ll
+++ b/test/CodeGen/SPARC/64abi.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -march=sparcv9 | FileCheck %s
+; RUN: llc < %s -march=sparcv9 -disable-sparc-delay-filler | FileCheck %s
 
 ; CHECK: intarg
 ; CHECK: stb %i0, [%i4]
@@ -17,7 +17,7 @@ define void @intarg(i8  %a0,   ; %i0
                     i32 %a3,   ; %i3
                     i8* %a4,   ; %i4
                     i32 %a5,   ; %i5
-                    i32 %a6,   ; [%fp+BIAS+176]
+                    i32 signext %a6,   ; [%fp+BIAS+176]
                     i8* %a7) { ; [%fp+BIAS+184]
   store i8 %a0, i8* %a4
   store i8 %a1, i8* %a4
@@ -33,6 +33,18 @@ define void @intarg(i8  %a0,   ; %i0
   ret void
 }
 
+; CHECK: call_intarg
+; Sign-extend and store the full 64 bits.
+; CHECK: sra %i0, 0, [[R:%[gilo][0-7]]]
+; CHECK: stx [[R]], [%sp+2223]
+; Use %o0-%o5 for outgoing arguments
+; CHECK: or %g0, 5, %o5
+; CHECK: call intarg
+define void @call_intarg(i32 %i0, i8* %i1) {
+  call void @intarg(i8 0, i8 1, i16 2, i32 3, i8* undef, i32 5, i32 %i0, i8* %i1)
+  ret void
+}
+
 ; CHECK: floatarg
 ; CHECK: fstod %f1,
 ; CHECK: faddd %f2,
@@ -57,7 +69,7 @@ define double @floatarg(float %a0,    ; %f1
                         float %a14,   ; %f29
                         float %a15,   ; %f31
                         float %a16,   ; [%fp+BIAS+256] (using 8 bytes)
-                        float %a17) { ; [%fp+BIAS+264] (using 8 bytes)
+                        double %a17) { ; [%fp+BIAS+264] (using 8 bytes)
   %d0 = fpext float %a0 to double
   %s1 = fadd double %a1, %d0
   %s2 = fadd double %a2, %s1
@@ -68,6 +80,23 @@ define double @floatarg(float %a0,    ; %f1
   ret double %s17
 }
 
+; CHECK: call_floatarg
+; Store 4 bytes, right-aligned in slot.
+; CHECK: st %f1, [%sp+2307]
+; Store 8 bytes in full slot.
+; CHECK: std %f2, [%sp+2311]
+; CHECK: fmovd %f2, %f4
+; CHECK: call floatarg
+define void @call_floatarg(float %f1, double %d2, float %f5, double *%p) {
+  %r = call double @floatarg(float %f5, double %d2, double %d2, double %d2,
+                             float %f5, float %f5,  float %f5,  float %f5,
+                             float %f5, float %f5,  float %f5,  float %f5,
+                             float %f5, float %f5,  float %f5,  float %f5,
+                             float %f1, double %d2)
+  store double %r, double* %p
+  ret void
+}
+
 ; CHECK: mixedarg
 ; CHECK: fstod %f3
 ; CHECK: faddd %f6
@@ -92,6 +121,26 @@ define void @mixedarg(i8 %a0,      ; %i0
   ret void
 }
 
+; CHECK: call_mixedarg
+; CHECK: stx %i2, [%sp+2247]
+; CHECK: stx %i0, [%sp+2223]
+; CHECK: fmovd %f2, %f6
+; CHECK: fmovd %f2, %f16
+; CHECK: call mixedarg
+define void @call_mixedarg(i64 %i0, double %f2, i16* %i2) {
+  call void @mixedarg(i8 undef,
+                      float undef,
+                      i16 undef,
+                      double %f2,
+                      i13 undef,
+                      float undef,
+                      i64 %i0,
+                      double* undef,
+                      double %f2,
+                      i16* %i2)
+  ret void
+}
+
 ; The inreg attribute is used to indicate 32-bit sized struct elements that
 ; share an 8-byte slot.
 ; CHECK: inreg_fi
@@ -105,6 +154,15 @@ define i32 @inreg_fi(i32 inreg %a0,     ; high bits of %i0
   ret i32 %rv
 }
 
+; CHECK: call_inreg_fi
+; CHECK: sllx %i1, 32, %o0
+; CHECK: fmovs %f5, %f1
+; CHECK: call inreg_fi
+define void @call_inreg_fi(i32* %p, i32 %i1, float %f5) {
+  %x = call i32 @inreg_fi(i32 %i1, float %f5)
+  ret void
+}
+
 ; CHECK: inreg_ff
 ; CHECK: fsubs %f0, %f1, %f1
 define float @inreg_ff(float inreg %a0,   ; %f0
@@ -113,6 +171,15 @@ define float @inreg_ff(float inreg %a0,   ; %f0
   ret float %rv
 }
 
+; CHECK: call_inreg_ff
+; CHECK: fmovs %f3, %f0
+; CHECK: fmovs %f5, %f1
+; CHECK: call inreg_ff
+define void @call_inreg_ff(i32* %p, float %f3, float %f5) {
+  %x = call float @inreg_ff(float %f3, float %f5)
+  ret void
+}
+
 ; CHECK: inreg_if
 ; CHECK: fstoi %f0
 ; CHECK: sub %i0
@@ -123,6 +190,15 @@ define i32 @inreg_if(float inreg %a0, ; %f0
   ret i32 %rv
 }
 
+; CHECK: call_inreg_if
+; CHECK: fmovs %f3, %f0
+; CHECK: or %g0, %i2, %o0
+; CHECK: call inreg_if
+define void @call_inreg_if(i32* %p, float %f3, i32 %i2) {
+  %x = call i32 @inreg_if(float %f3, i32 %i2)
+  ret void
+}
+
 ; The frontend shouldn't do this. Just pass i64 instead.
 ; CHECK: inreg_ii
 ; CHECK: srlx %i0, 32, [[R:%[gilo][0-7]]]
@@ -133,6 +209,16 @@ define i32 @inreg_ii(i32 inreg %a0,   ; high bits of %i0
   ret i32 %rv
 }
 
+; CHECK: call_inreg_ii
+; CHECK: srl %i2, 0, [[R2:%[gilo][0-7]]]
+; CHECK: sllx %i1, 32, [[R1:%[gilo][0-7]]]
+; CHECK: or [[R1]], [[R2]], %o0
+; CHECK: call inreg_ii
+define void @call_inreg_ii(i32* %p, i32 %i1, i32 %i2) {
+  %x = call i32 @inreg_ii(i32 %i1, i32 %i2)
+  ret void
+}
+
 ; Structs up to 32 bytes in size can be returned in registers.
 ; CHECK: ret_i64_pair
 ; CHECK: ldx [%i2], %i0
@@ -146,6 +232,20 @@ define { i64, i64 } @ret_i64_pair(i32 %a0, i32 %a1, i64* %p, i64* %q) {
   ret { i64, i64 } %rv2
 }
 
+; CHECK: call_ret_i64_pair
+; CHECK: call ret_i64_pair
+; CHECK: stx %o0, [%i0]
+; CHECK: stx %o1, [%i0]
+define void @call_ret_i64_pair(i64* %i0) {
+  %rv = call { i64, i64 } @ret_i64_pair(i32 undef, i32 undef,
+                                        i64* undef, i64* undef)
+  %e0 = extractvalue { i64, i64 } %rv, 0
+  store i64 %e0, i64* %i0
+  %e1 = extractvalue { i64, i64 } %rv, 1
+  store i64 %e1, i64* %i0
+  ret void
+}
+
 ; This is not a C struct, each member uses 8 bytes.
 ; CHECK: ret_i32_float_pair
 ; CHECK: ld [%i2], %i0
@@ -160,6 +260,20 @@ define { i32, float } @ret_i32_float_pair(i32 %a0, i32 %a1,
   ret { i32, float } %rv2
 }
 
+; CHECK: call_ret_i32_float_pair
+; CHECK: call ret_i32_float_pair
+; CHECK: st %o0, [%i0]
+; CHECK: st %f3, [%i1]
+define void @call_ret_i32_float_pair(i32* %i0, float* %i1) {
+  %rv = call { i32, float } @ret_i32_float_pair(i32 undef, i32 undef,
+                                                i32* undef, float* undef)
+  %e0 = extractvalue { i32, float } %rv, 0
+  store i32 %e0, i32* %i0
+  %e1 = extractvalue { i32, float } %rv, 1
+  store float %e1, float* %i1
+  ret void
+}
+
 ; This is a C struct, each member uses 4 bytes.
 ; CHECK: ret_i32_float_packed
 ; CHECK: ld [%i2], [[R:%[gilo][0-7]]]
@@ -175,6 +289,21 @@ define inreg { i32, float } @ret_i32_float_packed(i32 %a0, i32 %a1,
   ret { i32, float } %rv2
 }
 
+; CHECK: call_ret_i32_float_packed
+; CHECK: call ret_i32_float_packed
+; CHECK: srlx %o0, 32, [[R:%[gilo][0-7]]]
+; CHECK: st [[R]], [%i0]
+; CHECK: st %f1, [%i1]
+define void @call_ret_i32_float_packed(i32* %i0, float* %i1) {
+  %rv = call { i32, float } @ret_i32_float_packed(i32 undef, i32 undef,
+                                                  i32* undef, float* undef)
+  %e0 = extractvalue { i32, float } %rv, 0
+  store i32 %e0, i32* %i0
+  %e1 = extractvalue { i32, float } %rv, 1
+  store float %e1, float* %i1
+  ret void
+}
+
 ; The C frontend should use i64 to return { i32, i32 } structs, but verify that
 ; we don't miscompile thi case where both struct elements are placed in %i0.
 ; CHECK: ret_i32_packed
@@ -192,6 +321,21 @@ define inreg { i32, i32 } @ret_i32_packed(i32 %a0, i32 %a1,
   ret { i32, i32 } %rv2
 }
 
+; CHECK: call_ret_i32_packed
+; CHECK: call ret_i32_packed
+; CHECK: srlx %o0, 32, [[R:%[gilo][0-7]]]
+; CHECK: st [[R]], [%i0]
+; CHECK: st %o0, [%i1]
+define void @call_ret_i32_packed(i32* %i0, i32* %i1) {
+  %rv = call { i32, i32 } @ret_i32_packed(i32 undef, i32 undef,
+                                          i32* undef, i32* undef)
+  %e0 = extractvalue { i32, i32 } %rv, 0
+  store i32 %e0, i32* %i0
+  %e1 = extractvalue { i32, i32 } %rv, 1
+  store i32 %e1, i32* %i1
+  ret void
+}
+
 ; The return value must be sign-extended to 64 bits.
 ; CHECK: ret_sext
 ; CHECK: sra %i0, 0, %i0