arsenm added inline comments.
================
Comment at: lib/Basic/Targets/AMDGPU.h:124
+ /// {sn}, {s[n]}
+ /// {S} , wheere S is a special register name
+ ////{v[n:m]}
----------------
Typo wheere
================
Comment at: lib/Basic/Targets/AMDGPU.h:194
+ Info.setAllowsRegister();
+ Name = S.data() - 1;
+ return true;
----------------
I'm not sure I understand these data() - 1s.
================
Comment at: test/Sema/inline-asm-validate-amdgpu.cl:74
+ __asm("v_add_f64_e64 v[1:2], v[3:4], v[5:6]" : "=v[1:2]"(ci) :
"v[3:4]"(ai), "v[5:6]"(bi) : ); //expected-error {{invalid output constraint
'=v[1:2]' in asm}}
+
+ c[i] = ci;
----------------
While you're here can we add some tests for the immediate constraints? There
was a bug report recently when using s_trap with the i constraints for the
constant operand.
https://reviews.llvm.org/D37568
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