[llvm] [RISCV] Support .option {no}exact (PR #122483)

[Sudharsan Veeravalli via llvm-commits]

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@@ -0,0 +1,21 @@
+; RUN: llc -mtriple=riscv32 -mattr=+relax,+c %s --filetype=obj -o - \
+; RUN:  | llvm-objdump --triple=riscv32 --mattr=+c -M no-aliases -dr - \
+; RUN:  | FileCheck %s
+
+define i32 @foo(ptr noundef %f) nounwind {
+; CHECK-LABEL: <foo>:
+; CHECK:      auipc ra, 0x0
+; CHECK-NEXT:     R_RISCV_CALL_PLT undefined
+; CHECK-NEXT: jalr ra, 0x0(ra)
+; CHECK-NEXT: lw a0, 0x0(a0)
+; CHECK-NEXT: c.jr ra
+
+entry:
+  %0 = tail call i32 asm sideeffect "
+  .option exact
+  call undefined at plt
+  lw $0, ($1)
+  .option noexact", "=^cr,^cr"(ptr %f)
+  ret i32 %0
+}
+
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svs-quic wrote:

Nit: Two new lines at the end of the file.

https://github.com/llvm/llvm-project/pull/122483