mov r1, #PCRELV0
add r1, pc
ldr r0, [r0, r1]
- cpy pc, r0
+ mov pc, r0
.align 2
LJTI1_0_0:
.long LBB1_3
LPCRELL0:
add r1, LJTI1_0_0
ldr r0, [r0, r1]
- cpy pc, r0
+ mov pc, r0
.align 2
LJTI1_0_0:
.long LBB1_3
//===---------------------------------------------------------------------===//
-We compiles the following:
+We compile the following:
define i16 @func_entry_2E_ce(i32 %i) {
switch i32 %i, label %bb12.exitStub [
add r5, pc
ldr r6, LCPI1_1
ldr r2, LCPI1_2
- cpy r3, r6
- cpy lr, pc
+ mov r3, r6
+ mov lr, pc
bx r5
//===---------------------------------------------------------------------===//
Rather than having tBR_JTr print a ".align 2" and constant island pass pad it,
add a target specific ALIGN instruction instead. That way, GetInstSizeInBytes
won't have to over-estimate. It can also be used for loop alignment pass.
+
+//===---------------------------------------------------------------------===//
+
+We generate conditional code for icmp when we don't need to. This code:
+
+ int foo(int s) {
+ return s == 1;
+ }
+
+produces:
+
+foo:
+ cmp r0, #1
+ mov.w r0, #0
+ it eq
+ moveq r0, #1
+ bx lr
+
+when it could use subs + adcs. This is GCC PR46975.