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https://github.com/c64scene-ar/llvm-6502.git
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3b72ec5083
Summary: In order to support big endian targets for the BuildPairF64 nodes we just need to swap the low/high pair registers. Additionally, for the ExtractElementF64 nodes we have to calculate the correct stack offset with respect to the node's register/operand that we want to extract. Reviewers: dsanders Reviewed By: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D5753 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219931 91177308-0d34-0410-b5e6-96231b3b80d8
162 lines
5.7 KiB
LLVM
162 lines
5.7 KiB
LLVM
; Test that the FP64A ABI performs double precision moves via a spill/reload.
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; The requirement is really that odd-numbered double precision registers do not
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; use mfc1/mtc1 to move the bottom 32-bits (because the hardware will redirect
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; this to the top 32-bits of the even register) but we have to make the decision
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; before register allocation so we do this for all double-precision values.
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; We don't test MIPS32r1 since support for 64-bit coprocessors (such as a 64-bit
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; FPU) on a 32-bit architecture was added in MIPS32r2.
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; FIXME: We currently don't test that attempting to use FP64 on MIPS32r1 is an
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; error either. This is because a large number of CodeGen tests are
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; incorrectly using this case. We should fix those test cases then add
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; this check here.
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; RUN: llc -march=mips -mcpu=mips32r2 -mattr=fp64 < %s | FileCheck %s -check-prefix=ALL -check-prefix=32R2-NO-FP64A-BE
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; RUN: llc -march=mips -mcpu=mips32r2 -mattr=fp64,nooddspreg < %s | FileCheck %s -check-prefix=ALL -check-prefix=32R2-FP64A
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; RUN: llc -march=mipsel -mcpu=mips32r2 -mattr=fp64 < %s | FileCheck %s -check-prefix=ALL -check-prefix=32R2-NO-FP64A-LE
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; RUN: llc -march=mipsel -mcpu=mips32r2 -mattr=fp64,nooddspreg < %s | FileCheck %s -check-prefix=ALL -check-prefix=32R2-FP64A
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; RUN: llc -march=mips64 -mcpu=mips64 -mattr=fp64 < %s | FileCheck %s -check-prefix=ALL -check-prefix=64-NO-FP64A
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; RUN: not llc -march=mips64 -mcpu=mips64 -mattr=fp64,nooddspreg < %s 2>&1 | FileCheck %s -check-prefix=64-FP64A
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; RUN: llc -march=mips64el -mcpu=mips64 -mattr=fp64 < %s | FileCheck %s -check-prefix=ALL -check-prefix=64-NO-FP64A
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; RUN: not llc -march=mips64el -mcpu=mips64 -mattr=fp64,nooddspreg < %s 2>&1 | FileCheck %s -check-prefix=64-FP64A
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; 64-FP64A: LLVM ERROR: -mattr=+nooddspreg requires the O32 ABI.
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declare double @dbl();
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define double @call1(double %d, ...) {
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ret double %d
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; ALL-LABEL: call1:
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; 32R2-NO-FP64A-LE-NOT: addiu $sp, $sp
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; 32R2-NO-FP64A-LE: mtc1 $4, $f0
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; 32R2-NO-FP64A-LE: mthc1 $5, $f0
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; 32R2-NO-FP64A-BE-NOT: addiu $sp, $sp
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; 32R2-NO-FP64A-BE: mtc1 $5, $f0
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; 32R2-NO-FP64A-BE: mthc1 $4, $f0
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; 32R2-FP64A: addiu $sp, $sp, -8
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; 32R2-FP64A: sw $4, 0($sp)
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; 32R2-FP64A: sw $5, 4($sp)
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; 32R2-FP64A: ldc1 $f0, 0($sp)
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; 64-NO-FP64A: daddiu $sp, $sp, -64
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; 64-NO-FP64A: mov.d $f0, $f12
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}
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define double @call2(i32 %i, double %d) {
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ret double %d
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; ALL-LABEL: call2:
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; 32R2-NO-FP64A-LE: mtc1 $6, $f0
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; 32R2-NO-FP64A-LE: mthc1 $7, $f0
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; 32R2-NO-FP64A-BE: mtc1 $7, $f0
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; 32R2-NO-FP64A-BE: mthc1 $6, $f0
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; 32R2-FP64A: addiu $sp, $sp, -8
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; 32R2-FP64A: sw $6, 0($sp)
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; 32R2-FP64A: sw $7, 4($sp)
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; 32R2-FP64A: ldc1 $f0, 0($sp)
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; 64-NO-FP64A-NOT: daddiu $sp, $sp
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; 64-NO-FP64A: mov.d $f0, $f13
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}
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define double @call3(float %f1, float %f2, double %d) {
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ret double %d
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; ALL-LABEL: call3:
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; 32R2-NO-FP64A-LE: mtc1 $6, $f0
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; 32R2-NO-FP64A-LE: mthc1 $7, $f0
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; 32R2-NO-FP64A-BE: mtc1 $7, $f0
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; 32R2-NO-FP64A-BE: mthc1 $6, $f0
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; 32R2-FP64A: addiu $sp, $sp, -8
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; 32R2-FP64A: sw $6, 0($sp)
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; 32R2-FP64A: sw $7, 4($sp)
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; 32R2-FP64A: ldc1 $f0, 0($sp)
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; 64-NO-FP64A-NOT: daddiu $sp, $sp
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; 64-NO-FP64A: mov.d $f0, $f14
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}
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define double @call4(float %f, double %d, ...) {
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ret double %d
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; ALL-LABEL: call4:
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; 32R2-NO-FP64A-LE: mtc1 $6, $f0
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; 32R2-NO-FP64A-LE: mthc1 $7, $f0
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; 32R2-NO-FP64A-BE: mtc1 $7, $f0
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; 32R2-NO-FP64A-BE: mthc1 $6, $f0
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; 32R2-FP64A: addiu $sp, $sp, -8
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; 32R2-FP64A: sw $6, 0($sp)
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; 32R2-FP64A: sw $7, 4($sp)
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; 32R2-FP64A: ldc1 $f0, 0($sp)
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; 64-NO-FP64A: daddiu $sp, $sp, -48
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; 64-NO-FP64A: mov.d $f0, $f13
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}
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define double @call5(double %a, double %b, ...) {
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%1 = fsub double %a, %b
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ret double %1
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; ALL-LABEL: call5:
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; 32R2-NO-FP64A-LE-DAG: mtc1 $4, $[[T0:f[0-9]+]]
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; 32R2-NO-FP64A-LE-DAG: mthc1 $5, $[[T0:f[0-9]+]]
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; 32R2-NO-FP64A-LE-DAG: mtc1 $6, $[[T1:f[0-9]+]]
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; 32R2-NO-FP64A-LE-DAG: mthc1 $7, $[[T1:f[0-9]+]]
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; 32R2-NO-FP64A-LE: sub.d $f0, $[[T0]], $[[T1]]
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; 32R2-NO-FP64A-BE-DAG: mtc1 $5, $[[T0:f[0-9]+]]
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; 32R2-NO-FP64A-BE-DAG: mthc1 $4, $[[T0:f[0-9]+]]
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; 32R2-NO-FP64A-BE-DAG: mtc1 $7, $[[T1:f[0-9]+]]
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; 32R2-NO-FP64A-BE-DAG: mthc1 $6, $[[T1:f[0-9]+]]
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; 32R2-NO-FP64A-BE: sub.d $f0, $[[T0]], $[[T1]]
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; 32R2-FP64A: addiu $sp, $sp, -8
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; 32R2-FP64A: sw $6, 0($sp)
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; 32R2-FP64A: sw $7, 4($sp)
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; 32R2-FP64A: ldc1 $[[T1:f[0-9]+]], 0($sp)
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; 32R2-FP64A: sw $4, 0($sp)
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; 32R2-FP64A: sw $5, 4($sp)
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; 32R2-FP64A: ldc1 $[[T0:f[0-9]+]], 0($sp)
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; 32R2-FP64A: sub.d $f0, $[[T0]], $[[T1]]
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; 64-NO-FP64A: sub.d $f0, $f12, $f13
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}
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define double @move_from(double %d) {
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%1 = call double @dbl()
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%2 = call double @call2(i32 0, double %1)
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ret double %2
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; ALL-LABEL: move_from:
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; 32R2-NO-FP64A-LE-DAG: mfc1 $6, $f0
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; 32R2-NO-FP64A-LE-DAG: mfhc1 $7, $f0
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; 32R2-NO-FP64A-BE-DAG: mfc1 $7, $f0
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; 32R2-NO-FP64A-BE-DAG: mfhc1 $6, $f0
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; 32R2-FP64A: addiu $sp, $sp, -32
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; 32R2-FP64A: sdc1 $f0, 16($sp)
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; 32R2-FP64A: lw $6, 16($sp)
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; FIXME: This store is redundant
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; 32R2-FP64A: sdc1 $f0, 16($sp)
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; 32R2-FP64A: lw $7, 20($sp)
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; 64-NO-FP64A: mov.d $f13, $f0
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}
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