================
@@ -725,6 +725,13 @@ bool GOTBuilder::visitEdge(LinkGraph &G, Block *B, Edge
&E) {
return true;
}
+const uint8_t ArmThumbv5LdrPc[] = {
+ 0x78, 0x47, // bx pc
+ 0xfd, 0xe7, // b #-6 ; Arm recommended sequence to follow bx pc
+ 0x04, 0xf0, 0x1f, 0xe5, // ldr pc, [pc,#-4] ; L1
+ 0x00, 0x00, 0x00, 0x00, // L1: .word S
+};
----------------
weliveindetail wrote:
Extended the `v5LdrPc` stub with the Thumb prologue. Thumb B instructions will
branch to offset 0 of this block. Thumb BL are be rewritten to BLX and branch
to offset 4. Same for Arm branches.
https://github.com/llvm/llvm-project/pull/79082
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