Comment 2 for bug 1883880

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Bruce Richardson (Intel) (bricha3) wrote :

Command to reproduce the issue:

echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps

The expected output is that the objdump output matches the vmovaps instruction input. When using binutils with the bug, the initial 0x40 will be incorrect.

From an Ubuntu 20.04 system:

$ echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps
   0: 62 f1 7c 48 28 04 05 vmovaps 0x40(,%rax,1),%zmm0

On an Ubuntu 18.04 system:

$ echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps
   0: 62 f1 7c 48 28 04 05 vmovaps 0x1(,%rax,1),%zmm0