Update an armv7 test for beginAccess markers.

Author: atrick

test/IRGen/pic.swift

@@ -21,27 +21,33 @@ public func use_global() -> Int {
 // i386:         movl __T04main6globalSiv-[[PIC_BLOCK]]([[PIC_REG]]), {{%[a-z]+}}
 
 // armv7-LABEL: __T04main10use_globalSiyF:
-// armv7:         movw r0, :lower16:(__T04main6globalSiv-([[PIC_0:L.*]]+8))
-// armv7:         movt r0, :upper16:(__T04main6globalSiv-([[PIC_0]]+8))
+// Check for the runtime memory enforcement call. The global address may be
+// materialized in a different register prior to that call.
+// armv7:         bl _swift_beginAccess
+// armv7:         movw [[R_ADR:r.*]], :lower16:(__T04main6globalSiv-([[PIC_0:L.*]]+8))
+// armv7:         movt [[R_ADR]], :upper16:(__T04main6globalSiv-([[PIC_0]]+8))
 // armv7:       [[PIC_0]]:{{$}}
-// armv7:         add r0, pc, r0
-// armv7:         ldr r0, [r0]
+// armv7:         add [[R_ADR]], pc, [[R_ADR]]
+// armv7:         ldr [[R_ADR]], {{\[}}[[R_ADR]]{{\]}}
 
 // armv7s-LABEL: __T04main10use_globalSiyF:
-// armv7s:         movw r0, :lower16:(__T04main6globalSiv-([[PIC_0:L.*]]+8))
-// armv7s:         movt r0, :upper16:(__T04main6globalSiv-([[PIC_0]]+8))
+// armv7s:         bl _swift_beginAccess
+// armv7s:         movw [[R_ADR:r.*]], :lower16:(__T04main6globalSiv-([[PIC_0:L.*]]+8))
+// armv7s:         movt [[R_ADR]], :upper16:(__T04main6globalSiv-([[PIC_0]]+8))
 // armv7s:       [[PIC_0]]:{{$}}
-// armv7s:         add r0, pc, r0
-// armv7s:         ldr r0, [r0]
+// armv7s:         add [[R_ADR]], pc, [[R_ADR]]
+// armv7s:         ldr [[R_ADR]], {{\[}}[[R_ADR]]{{\]}}
 
 // armv7k-LABEL: __T04main10use_globalSiyF:
-// armv7k:        movw r0, :lower16:(__T04main6globalSiv-([[PIC_0:L.*]]+8))
-// armv7k:        movt r0, :upper16:(__T04main6globalSiv-([[PIC_0]]+8))
+// armv7k:         bl _swift_beginAccess
+// armv7k:        movw [[R_ADR:r.*]], :lower16:(__T04main6globalSiv-([[PIC_0:L.*]]+8))
+// armv7k:        movt [[R_ADR]], :upper16:(__T04main6globalSiv-([[PIC_0]]+8))
 // armv7k:      [[PIC_0]]:{{$}}
-// armv7k:        add r0, pc, r0
-// armv7k:        ldr r0, [r0]
+// armv7k:        add [[R_ADR]], pc, [[R_ADR]]
+// armv7k:        ldr [[R_ADR]], {{\[}}[[R_ADR]]{{\]}}
 
 // arm64-LABEL: __T04main10use_globalSiyF:
+// arm64:         bl _swift_beginAccess
 // arm64:         adrp [[REG1:x[0-9]+]], __T04main6globalSiv@PAGE
 // arm64:         add [[REG2:x[0-9]+]], [[REG1]], __T04main6globalSiv@PAGEOFF
 // arm64:         ldr {{x[0-9]+}}, {{\[}}[[REG2]]{{\]}}