forked from OSchip/llvm-project
608cb5def6
This change implements the transformation in processInstruction() for the LDR rt, =expression to MOV rt, expression when the expression can be evaluated and can fit into the immediate field of the MOV or a MVN. Across the ARM and Thumb instruction sets there are several cases to consider, each with a different range of representatble constants. In ARM we have: * Modified immediate (All ARM architectures) * MOVW (v6t2 and above) In Thumb we have: * Modified immediate (v6t2, v7m and v8m.mainline) * MOVW (v6t2, v7m, v8.mainline and v8m.baseline) * Narrow Thumb MOV that can be used in an IT block (non flag-setting) If the immediate fits any of the available alternatives then we make the transformation. Fixes 25722. Patch by Peter Smith. llvm-svn: 269354 |
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| .. | ||
| AArch64 | ||
| AMDGPU | ||
| ARM | ||
| AsmParser | ||
| COFF | ||
| Disassembler | ||
| ELF | ||
| Hexagon | ||
| Lanai | ||
| MachO | ||
| Markup | ||
| Mips | ||
| PowerPC | ||
| Sparc | ||
| SystemZ | ||
| X86 | ||