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-rw-r--r--gcc/config/arm/arm.c5
-rw-r--r--gcc/config/arm/arm.md10
2 files changed, 8 insertions, 7 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 805335c..290b537 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -3282,7 +3282,8 @@ arm_option_override (void)
}
/* Enable -munaligned-access by default for
- - all ARMv6 architecture-based processors
+ - all ARMv6 architecture-based processors when compiling for a 32-bit ISA
+ i.e. Thumb2 and ARM state only.
- ARMv7-A, ARMv7-R, and ARMv7-M architecture-based processors.
- ARMv8 architecture-base processors.
@@ -3292,7 +3293,7 @@ arm_option_override (void)
if (unaligned_access == 2)
{
- if (arm_arch6 && (arm_arch_notm || arm_arch7))
+ if (TARGET_32BIT && arm_arch6 && (arm_arch_notm || arm_arch7))
unaligned_access = 1;
else
unaligned_access = 0;
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 227a9bd..effe7eb 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -4219,7 +4219,7 @@
[(set (match_operand:SI 0 "s_register_operand" "=l,r")
(unspec:SI [(match_operand:SI 1 "memory_operand" "Uw,m")]
UNSPEC_UNALIGNED_LOAD))]
- "unaligned_access && TARGET_32BIT"
+ "unaligned_access"
"ldr%?\t%0, %1\t@ unaligned"
[(set_attr "arch" "t2,any")
(set_attr "length" "2,4")
@@ -4232,7 +4232,7 @@
(sign_extend:SI
(unspec:HI [(match_operand:HI 1 "memory_operand" "Uw,Uh")]
UNSPEC_UNALIGNED_LOAD)))]
- "unaligned_access && TARGET_32BIT"
+ "unaligned_access"
"ldrsh%?\t%0, %1\t@ unaligned"
[(set_attr "arch" "t2,any")
(set_attr "length" "2,4")
@@ -4245,7 +4245,7 @@
(zero_extend:SI
(unspec:HI [(match_operand:HI 1 "memory_operand" "Uw,m")]
UNSPEC_UNALIGNED_LOAD)))]
- "unaligned_access && TARGET_32BIT"
+ "unaligned_access"
"ldrh%?\t%0, %1\t@ unaligned"
[(set_attr "arch" "t2,any")
(set_attr "length" "2,4")
@@ -4257,7 +4257,7 @@
[(set (match_operand:SI 0 "memory_operand" "=Uw,m")
(unspec:SI [(match_operand:SI 1 "s_register_operand" "l,r")]
UNSPEC_UNALIGNED_STORE))]
- "unaligned_access && TARGET_32BIT"
+ "unaligned_access"
"str%?\t%1, %0\t@ unaligned"
[(set_attr "arch" "t2,any")
(set_attr "length" "2,4")
@@ -4269,7 +4269,7 @@
[(set (match_operand:HI 0 "memory_operand" "=Uw,m")
(unspec:HI [(match_operand:HI 1 "s_register_operand" "l,r")]
UNSPEC_UNALIGNED_STORE))]
- "unaligned_access && TARGET_32BIT"
+ "unaligned_access"
"strh%?\t%1, %0\t@ unaligned"
[(set_attr "arch" "t2,any")
(set_attr "length" "2,4")