; RUN: llc -march=mipsel -mcpu=mips32 < %s | FileCheck %s -check-prefixes=ALL,32-NOFPXX
; RUN: llc -march=mipsel -mcpu=mips32 -mattr=fpxx < %s | FileCheck %s -check-prefixes=ALL,32-FPXX
; RUN: llc -march=mipsel -mcpu=mips32r2 < %s | FileCheck %s -check-prefixes=ALL,32R2-NOFPXX
; RUN: llc -march=mipsel -mcpu=mips32r2 -mattr=fpxx < %s | FileCheck %s -check-prefixes=ALL,32R2-FPXX
; RUN: llc -march=mips64 -mcpu=mips4 < %s | FileCheck %s -check-prefixes=ALL,4-NOFPXX
; RUN: not llc -march=mips64 -mcpu=mips4 -mattr=fpxx < %s 2>&1 | FileCheck %s -check-prefix=4-FPXX
; RUN: llc -march=mips64 -mcpu=mips64 < %s | FileCheck %s -check-prefixes=ALL,64-NOFPXX
; RUN: not llc -march=mips64 -mcpu=mips64 -mattr=fpxx < %s 2>&1 | FileCheck %s -check-prefix=64-FPXX
; RUN-TODO: llc -march=mips64 -mcpu=mips4 -target-abi o32 < %s | FileCheck %s -check-prefixes=ALL,4-O32-NOFPXX
; RUN-TODO: llc -march=mips64 -mcpu=mips4 -target-abi o32 -mattr=fpxx < %s | FileCheck %s -check-prefixes=ALL,4-O32-FPXX
; RUN-TODO: llc -march=mips64 -mcpu=mips64 -target-abi o32 < %s | FileCheck %s -check-prefixes=ALL,64-O32-NOFPXX
; RUN-TODO: llc -march=mips64 -mcpu=mips64 -target-abi o32 -mattr=fpxx < %s | FileCheck %s -check-prefixes=ALL,64-O32-FPXX
declare double @dbl();
; 4-FPXX: LLVM ERROR: FPXX is not permitted for the N32/N64 ABI's.
; 64-FPXX: LLVM ERROR: FPXX is not permitted for the N32/N64 ABI's.
define double @test1(double %d, ...) {
ret double %d
; ALL-LABEL: test1:
; 32-NOFPXX: mtc1 $4, $f0
; 32-NOFPXX: mtc1 $5, $f1
; 32-FPXX: addiu $sp, $sp, -8
; 32-FPXX: sw $4, 0($sp)
; 32-FPXX: sw $5, 4($sp)
; 32-FPXX: ldc1 $f0, 0($sp)
; 32R2-NOFPXX: mtc1 $4, $f0
; 32R2-NOFPXX: mthc1 $5, $f0
; 32R2-FPXX: mtc1 $4, $f0
; 32R2-FPXX: mthc1 $5, $f0
; floats/doubles are not passed in integer registers for n64, so dmtc1 is not used.
; 4-NOFPXX: mov.d $f0, $f12
; 64-NOFPXX: mov.d $f0, $f12
}
define double @test2(i32 %i, double %d) {
ret double %d
; ALL-LABEL: test2:
; 32-NOFPXX: mtc1 $6, $f0
; 32-NOFPXX: mtc1 $7, $f1
; 32-FPXX: addiu $sp, $sp, -8
; 32-FPXX: sw $6, 0($sp)
; 32-FPXX: sw $7, 4($sp)
; 32-FPXX: ldc1 $f0, 0($sp)
; 32R2-NOFPXX: mtc1 $6, $f0
; 32R2-NOFPXX: mthc1 $7, $f0
; 32R2-FPXX: mtc1 $6, $f0
; 32R2-FPXX: mthc1 $7, $f0
; 4-NOFPXX: mov.d $f0, $f13
; 64-NOFPXX: mov.d $f0, $f13
}
define double @test3(float %f1, float %f2, double %d) {
ret double %d
; ALL-LABEL: test3:
; 32-NOFPXX: mtc1 $6, $f0
; 32-NOFPXX: mtc1 $7, $f1
; 32-FPXX: addiu $sp, $sp, -8
; 32-FPXX: sw $6, 0($sp)
; 32-FPXX: sw $7, 4($sp)
; 32-FPXX: ldc1 $f0, 0($sp)
; 32R2-NOFPXX: mtc1 $6, $f0
; 32R2-NOFPXX: mthc1 $7, $f0
; 32R2-FPXX: mtc1 $6, $f0
; 32R2-FPXX: mthc1 $7, $f0
; 4-NOFPXX: mov.d $f0, $f14
; 64-NOFPXX: mov.d $f0, $f14
}
define double @test4(float %f, double %d, ...) {
ret double %d
; ALL-LABEL: test4:
; 32-NOFPXX: mtc1 $6, $f0
; 32-NOFPXX: mtc1 $7, $f1
; 32-FPXX: addiu $sp, $sp, -8
; 32-FPXX: sw $6, 0($sp)
; 32-FPXX: sw $7, 4($sp)
; 32-FPXX: ldc1 $f0, 0($sp)
; 32R2-NOFPXX: mtc1 $6, $f0
; 32R2-NOFPXX: mthc1 $7, $f0
; 32R2-FPXX: mtc1 $6, $f0
; 32R2-FPXX: mthc1 $7, $f0
; 4-NOFPXX: mov.d $f0, $f13
; 64-NOFPXX: mov.d $f0, $f13
}
define double @test5() {
ret double 0.000000e+00
; ALL-LABEL: test5:
; 32-NOFPXX: mtc1 $zero, $f0
; 32-NOFPXX: mtc1 $zero, $f1
; 32-FPXX: addiu $sp, $sp, -8
; 32-FPXX: sw $zero, 0($sp)
; 32-FPXX: sw $zero, 4($sp)
; 32-FPXX: ldc1 $f0, 0($sp)
; 32R2-NOFPXX: mtc1 $zero, $f0
; 32R2-NOFPXX: mthc1 $zero, $f0
; 32R2-FPXX: mtc1 $zero, $f0
; 32R2-FPXX: mthc1 $zero, $f0
; 4-NOFPXX: dmtc1 $zero, $f0
; 64-NOFPXX: dmtc1 $zero, $f0
}
define double @test6(double %a, double %b, ...) {
%1 = fsub double %a, %b
ret double %1
; ALL-LABEL: test6:
; 32-NOFPXX-DAG: mtc1 $4, $[[T0:f[0-9]+]]
; 32-NOFPXX-DAG: mtc1 $5, ${{f[0-9]*[13579]}}
; 32-NOFPXX-DAG: mtc1 $6, $[[T1:f[0-9]+]]
; 32-NOFPXX-DAG: mtc1 $7, ${{f[0-9]*[13579]}}
; 32-NOFPXX: sub.d $f0, $[[T0]], $[[T1]]
; 32-FPXX: addiu $sp, $sp, -8
; 32-FPXX: sw $6, 0($sp)
; 32-FPXX: sw $7, 4($sp)
; 32-FPXX: ldc1 $[[T1:f[0-9]+]], 0($sp)
; 32-FPXX: sw $4, 0($sp)
; 32-FPXX: sw $5, 4($sp)
; 32-FPXX: ldc1 $[[T0:f[0-9]+]], 0($sp)
; 32-FPXX: sub.d $f0, $[[T0]], $[[T1]]
; 32R2-NOFPXX-DAG: mtc1 $4, $[[T0:f[0-9]+]]
; 32R2-NOFPXX-DAG: mthc1 $5, $[[T0]]
; 32R2-NOFPXX-DAG: mtc1 $6, $[[T1:f[0-9]+]]
; 32R2-NOFPXX-DAG: mthc1 $7, $[[T1]]
; 32R2-NOFPXX: sub.d $f0, $[[T0]], $[[T1]]
; 32R2-FPXX-DAG: mtc1 $4, $[[T0:f[0-9]+]]
; 32R2-FPXX-DAG: mthc1 $5, $[[T0]]
; 32R2-FPXX-DAG: mtc1 $6, $[[T1:f[0-9]+]]
; 32R2-FPXX-DAG: mthc1 $7, $[[T1]]
; 32R2-FPXX: sub.d $f0, $[[T0]], $[[T1]]
; floats/doubles are not passed in integer registers for n64, so dmtc1 is not used.
; 4-NOFPXX: sub.d $f0, $f12, $f13
; floats/doubles are not passed in integer registers for n64, so dmtc1 is not used.
; 64-NOFPXX: sub.d $f0, $f12, $f13
}
define double @move_from1(double %d) {
%1 = call double @dbl()
%2 = call double @test2(i32 0, double %1)
ret double %2
; ALL-LABEL: move_from1:
; 32-NOFPXX-DAG: mfc1 $6, $f0
; 32-NOFPXX-DAG: mfc1 $7, $f1
; 32-FPXX: addiu $sp, $sp, -32
; 32-FPXX: sdc1 $f0, 16($sp)
; 32-FPXX: lw $6, 16($sp)
; FIXME: This store is redundant
; 32-FPXX: sdc1 $f0, 16($sp)
; 32-FPXX: lw $7, 20($sp)
; 32R2-NOFPXX-DAG: mfc1 $6, $f0
; 32R2-NOFPXX-DAG: mfhc1 $7, $f0
; 32R2-FPXX-DAG: mfc1 $6, $f0
; 32R2-FPXX-DAG: mfhc1 $7, $f0
; floats/doubles are not passed in integer registers for n64, so dmfc1 is not used.
; We can't use inline assembly to force a copy either because trying to force
; a copy to a GPR this way fails with ; "couldn't allocate input reg for
; constraint 'r'". It therefore seems impossible to test the generation of dmfc1
; in a simple test.
; 4-NOFPXX: mov.d $f13, $f0
; floats/doubles are not passed in integer registers for n64, so dmfc1 is not used.
; We can't use inline assembly to force a copy either because trying to force
; a copy to a GPR this way fails with ; "couldn't allocate input reg for
; constraint 'r'". It therefore seems impossible to test the generation of dmfc1
; in a simple test.
; 64-NOFPXX: mov.d $f13, $f0
}
Codebase Browser
llvm