[test] Fix IRGen/yield_result.sil for 32-bit platforms

Follow-up to 8b7a75c for 32-bit platforms.

test/IRGen/yield_result.sil

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -emit-irgen %s | %FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-%target-ptrsize
+// RUN: %target-swift-frontend -emit-irgen %s | %FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-%target-ptrsize -DINT=i%target-ptrsize
 
 import Builtin
 
@@ -103,7 +103,7 @@ bb0(%outt : $*T, %t : $*T):
   // CHECK:    br i1 [[IS_UNWIND]], label %[[UNWIND_BB:.*]], label %[[RESUME_BB:.*]]
 
   // CHECK:[[RESUME_BB]]:
-  // CHECK: [[VW_PTR:%.*]] = getelementptr inbounds ptr, ptr [[TYPE]], i64 -1
+  // CHECK: [[VW_PTR:%.*]] = getelementptr inbounds ptr, ptr [[TYPE]], [[INT]] -1
   // CHECK: [[VW:%.*]] = load ptr, ptr [[VW_PTR]]
   // CHECK: [[ASSIGN_PTR:%.*]] = getelementptr inbounds ptr, ptr [[VW]], i32 3
   // CHECK: [[ASSIGN:%.*]] = load ptr, ptr [[ASSIGN_PTR]]
@@ -126,15 +126,15 @@ sil [ossa] @test_coro_ret_indirect : $(Builtin.Int64) -> () {
 bb0(%0 : $Builtin.Int64):
   // CHECK: [[ARG_COPY:%.*]] = alloca i64
   // CHECK: [[INDIRECT_RET:%.*]] = alloca i64
-  // CHECK: [[FRAME:%.*]] = alloca [32 x i8]
+  // CHECK: [[FRAME:%.*]] = alloca [[[BUFFER_SIZE]] x i8]
   %coro = function_ref @coro_ret_indirect : $@yield_once @convention(thin) <T> (@in T) -> (@yields @in T, @out T)
   %temp = alloc_stack $Builtin.Int64
   store %0 to [trivial] %temp : $*Builtin.Int64
 
   %out = alloc_stack $Builtin.Int64
 
   // CHECK: store i64 [[ARG]], ptr [[ARG_COPY]]
-  // CHECK: [[CTX:%.*]] = getelementptr inbounds [32 x i8], ptr [[FRAME]], i32 0, i32 0
+  // CHECK: [[CTX:%.*]] = getelementptr inbounds [[[BUFFER_SIZE]] x i8], ptr [[FRAME]], i32 0, i32 0
   // CHECK: [[CORO:%.*]] = call ptr @llvm.coro.prepare.retcon(ptr @coro_ret_indirect)
   // CHECK: [[FRAME:%.*]] = call swiftcc { ptr, ptr } [[CORO]](ptr{{.*}} [[CTX]], ptr [[INDIRECT_RET]], ptr noalias [[ARG_COPY]], ptr getelementptr inbounds (%swift.full_existential_type, ptr @{{.*}}