[gcc r11-3545] arm: Fix ICEs in no-literal-pool.c on MVE [PR97251]

[Alex Coplan]

https://gcc.gnu.org/g:f63023fafbbc13545fef67e6b32a55b48a945fcf

commit r11-3545-gf63023fafbbc13545fef67e6b32a55b48a945fcf
Author: Alex Coplan <alex.coplan@arm.com>
Date:   Wed Sep 30 09:02:47 2020 +0100

    arm: Fix ICEs in no-literal-pool.c on MVE [PR97251]
    
    This patch fixes ICEs when compiling
    gcc/testsuite/gcc.target/arm/pure-code/no-literal-pool.c with
    -mfp16-format=ieee -mfloat-abi=hard -march=armv8.1-m.main+mve
    -mpure-code.
    
    The existing conditions in the movsf/movdf expanders (as well as the
    no_literal_pool patterns) were too restrictive, requiring
    TARGET_HARD_FLOAT instead of TARGET_VFP_BASE, which caused unrecognised
    insns when compiling this testcase with integer MVE and -mpure-code.
    
    gcc/ChangeLog:
    
            PR target/97251
            * config/arm/arm.md (movsf): Relax TARGET_HARD_FLOAT to
            TARGET_VFP_BASE.
            (movdf): Likewise.
            * config/arm/vfp.md (no_literal_pool_df_immediate): Likewise.
            (no_literal_pool_sf_immediate): Likewise.

Diff:
---
 gcc/config/arm/arm.md | 4 ++--
 gcc/config/arm/vfp.md | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 147c4a50c72..1a8e498ba4c 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -7357,7 +7357,7 @@
   if (arm_disable_literal_pool
       && (REG_P (operands[0]) || SUBREG_P (operands[0]))
       && CONST_DOUBLE_P (operands[1])
-      && TARGET_HARD_FLOAT
+      && TARGET_VFP_BASE
       && !vfp3_const_double_rtx (operands[1]))
     {
       rtx clobreg = gen_reg_rtx (SFmode);
@@ -7454,7 +7454,7 @@
   if (arm_disable_literal_pool
       && (REG_P (operands[0]) || SUBREG_P (operands[0]))
       && CONSTANT_P (operands[1])
-      && TARGET_HARD_FLOAT
+      && TARGET_VFP_BASE
       && !arm_const_double_rtx (operands[1])
       && !(TARGET_VFP_DOUBLE && vfp3_const_double_rtx (operands[1])))
     {
diff --git a/gcc/config/arm/vfp.md b/gcc/config/arm/vfp.md
index 72707c17929..e6c287c1a85 100644
--- a/gcc/config/arm/vfp.md
+++ b/gcc/config/arm/vfp.md
@@ -2125,7 +2125,7 @@
 	(match_operand:DF 1 "const_double_operand" "F"))
    (clobber (match_operand:DF 2 "s_register_operand" "=r"))]
   "arm_disable_literal_pool
-   && TARGET_HARD_FLOAT
+   && TARGET_VFP_BASE
    && !arm_const_double_rtx (operands[1])
    && !(TARGET_VFP_DOUBLE && vfp3_const_double_rtx (operands[1]))"
   "#"
@@ -2151,7 +2151,7 @@
 	(match_operand:SF 1 "const_double_operand" "E"))
    (clobber (match_operand:SF 2 "s_register_operand" "=r"))]
   "arm_disable_literal_pool
-   && TARGET_HARD_FLOAT
+   && TARGET_VFP_BASE
    && !vfp3_const_double_rtx (operands[1])"
   "#"
   ""