[llvm] [NVPTX] Switch to imm offset variants for LDG and LDU (PR #128270)

[Artem Belevich via llvm-commits]

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@@ -214,34 +214,33 @@ define dso_local i32 @bar() {
 ; CHECK-PTX-NEXT:    .reg .b64 %SPL;
 ; CHECK-PTX-NEXT:    .reg .b16 %rs<8>;
 ; CHECK-PTX-NEXT:    .reg .b32 %r<4>;
-; CHECK-PTX-NEXT:    .reg .b64 %rd<6>;
+; CHECK-PTX-NEXT:    .reg .b64 %rd<5>;
 ; CHECK-PTX-EMPTY:
 ; CHECK-PTX-NEXT:  // %bb.0: // %entry
 ; CHECK-PTX-NEXT:    mov.u64 %SPL, __local_depot3;
 ; CHECK-PTX-NEXT:    cvta.local.u64 %SP, %SPL;
 ; CHECK-PTX-NEXT:    add.u64 %rd2, %SPL, 0;
-; CHECK-PTX-NEXT:    mov.u64 %rd3, __const_$_bar_$_s1;
-; CHECK-PTX-NEXT:    ld.global.nc.u8 %rs1, [%rd3+7];
+; CHECK-PTX-NEXT:    ld.global.nc.u8 %rs1, [__const_$_bar_$_s1+7];
 ; CHECK-PTX-NEXT:    cvt.u16.u8 %rs2, %rs1;
 ; CHECK-PTX-NEXT:    st.local.u8 [%rd2+2], %rs2;
-; CHECK-PTX-NEXT:    ld.global.nc.u8 %rs3, [%rd3+6];
+; CHECK-PTX-NEXT:    ld.global.nc.u8 %rs3, [__const_$_bar_$_s1+6];
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Artem-B wrote:

Given that the changes in this test file are largely incidental, we may want to add a few test cases to load/store tests that will exercise accessing data with ldu/ldg via symbol+offset.

https://github.com/llvm/llvm-project/pull/128270