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1; RUN: llc -verify-machineinstrs -mtriple=i686-linux < %s | FileCheck --implicit-check-not="jmp.*\*" --implicit-check-not="call.*\*" %s2 3; Test 32-bit retpoline when -mregparm=3 is used. This case is interesting4; because there are no available scratch registers. The Linux kernel builds5; with -mregparm=3, so we need to support it. TCO should fail because we need6; to restore EDI.7 8define void @call_edi(ptr %fp) #0 {9entry:10 tail call void %fp(i32 inreg 0, i32 inreg 0, i32 inreg 0)11 ret void12}13 14; CHECK-LABEL: call_edi:15; EDI is used, so it must be saved.16; CHECK: pushl %edi17; CHECK-DAG: xorl %eax, %eax18; CHECK-DAG: xorl %edx, %edx19; CHECK-DAG: xorl %ecx, %ecx20; CHECK-DAG: movl {{.*}}, %edi21; CHECK: calll __llvm_retpoline_edi22; CHECK: popl %edi23; CHECK: retl24 25define void @edi_external(ptr %fp) #1 {26entry:27 tail call void %fp(i32 inreg 0, i32 inreg 0, i32 inreg 0)28 ret void29}30 31; CHECK-LABEL: edi_external:32; CHECK: pushl %edi33; CHECK-DAG: xorl %eax, %eax34; CHECK-DAG: xorl %edx, %edx35; CHECK-DAG: xorl %ecx, %ecx36; CHECK-DAG: movl {{.*}}, %edi37; CHECK: calll __x86_indirect_thunk_edi38; CHECK: popl %edi39; CHECK: retl40 41attributes #0 = { "target-features"="+retpoline-indirect-calls" }42attributes #1 = { "target-features"="+retpoline-indirect-calls,+retpoline-external-thunk" }43